Assume the availability of an existing class, ICalculator, that models an integer arithmetic calculator and contains: an instance variable currentValue that stores the current int value of the calculator and can be accessed and modified by any subclass. methods add, sub, mul, and div Each method in ICalculator receives an int argument and applies its operation to currentValue and returns the new value of currentValue. So, if currentValue has the value 8 and sub(6) is invoked then currentValue ends up with the value 2, and 2 is returned. So, you are to write the definition of a subclass, ICalculator2, based on ICalculator. The class ICalculator2 has one additional method, negate, that receives no arguments. The effect of negate is to reverse the sign of currentValue. For example, if currentValue is zero, there is no change, if it is -22 then it becomes 22, if it is 100 it becomes -100. Furthermore negate returns the new value of currentValue.
Answers
We connect with computers through coding, often known as computer programming.
How to code?We connect with computers through coding, often understood as computer programming.Coding exists similar to writing a set of instructions because it instructs a machine what to do.You can instruct computers what to do or how to behave much more quickly by learning to write code.class ICalculator {
int currentValue;
int add(int value) {
this.currentValue = currentValue + value;
return currentValue;
}
int sub(int value) {
this.currentValue = currentValue - value;
return currentValue;
}
int mul(int value) {
this.currentValue = currentValue * value;
return currentValue;
}
int div(int value) {
this.currentValue = currentValue / value;
return currentValue;
}
}
public class ICalculator2 extends ICalculator {
int negate() {
if (currentValue != 0)
this.currentValue = -currentValue;
return currentValue;
}
public static void main(String[] args) {
ICalculator2 ic = new ICalculator2();
ic.currentValue=5;
System.out.println(ic.add(2));
System.out.println(ic.sub(5));
System.out.println(ic.mul(3));
System.out.println(ic.div(3));
System.out.println(ic.negate());
}
}
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Related Questions
The code produces an error when trying to retrieve the formContext object by using the getFormContext method.
Answers
Using the knowledge in computational language in JAVA it is possible to write a code that produces an error when trying to retrieve the formContext object by using the getFormContext method.
Writting the code:function commonEventHandler(executionContext) {
var formContext = executionContext.getFormContext();
var telephoneAttr = formContext.data.entity.attributes.get('telephone1');
var isNumberWithCountryCode = telephoneAttr.getValue().substring(0,1) === '+';
// telephoneField will be a form control if invoked from a form OnChange event;
// telephoneField will be a editable grid GridCell object if invoked from editable grid OnChange event.
var telephoneField = telephoneAttr.controls.get(0);
if (!isNumberWithCountryCode) {
telephoneField.setNotification('Please include the country code beginning with '+'.', 'countryCodeNotification');
}
else {
telephoneField.clearNotification('countryCodeNotification');
}
}
function onstop(executionContext) {
var formContext = executionContext.getFormContext();
var stop = formContext.getAttribute("abs_onstop").getValue();
if (stop == true)
{
formContext.ui.setFormNotification("This account has been placed ON STOP!", "WARNING", "OnStop");
}
else
{
formContext.ui.clearFormNotification("OnStop");
}
}
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when the power rating of a transformer is exceeded by placing too great on the transformer, the voltage will start to
Answers
When the power rating of a transformer is exceeded by placing too great on the transformer, the voltage will start to drop, and the transformer may overheat and be damaged.
This is because exceeding the power rating causes the transformer to draw more current than it is designed to handle, resulting in increased losses due to the resistance of the winding and core materials. This increased current also causes a voltage drop across the winding and leads to a decrease in output voltage, which can cause problems downstream in the circuit. If the current continues to increase beyond the transformer's capacity, it can cause overheating and damage to the winding insulation, leading to short circuits and potential safety hazards.
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True or false
Consumer is the end user
Client is usually a company
Consumer is usually a company
Client is the end user
Consumer is the end user
Client is usually a company
Consumer is usually a company
Client is the end user
Answers
Answer:
Explanation:
a) True
b) False
c) False
d) False
e) True
f) False
g) False
h)False
Plz mark as brainliest
What can firefighters do to reduce the risk to people living in Skyview?
Answers
Answer:
The City can grant higher budgets to emergency services like the Fire Department, so a higher budget will allow engineers & scientists to innovate new technology and add more fire stations across the city.
Explanation:
Drag each tile to the correct box. Not all tiles will be used.
Adam wants to become a certified professional engineer. What are the steps that he will have to follow?
Answers
Answer:
I think it is the 2,3,5 and 1 ones
A large plane wall has a thickness L=50 cm and thermal conductivity k = 25 W/m. K. On the left surface (x = 0), it is subjected to a uniform heat flux q_0 while the surface temperature T_0 is constant. On the right surface, it experiences convection and radiation heat transfer while the surface temperature is T_6 =225 degree C and the surroanding temperature is 25 degree C. The emissivity and the convection heat transfer coefficient on the right surface are 0. 7 and 15 W/m^2. K, respectively, (a) Obtain the variation of temperature in the wall (T(x) in terms of Also determine the value of heat flux (q_n) and the temperature of the left surface of the wall (at x = 0)
Answers
The variation of temperature in the wall is T(x)= (q_0x) /(kL) + T_0. The heat flux q_n is -28.1 W/m^2 and the temperature of the left surface of the wall is T_0 = 300 degree C.
B. To obtain the variation of temperature in the wall, we need to use the heat conduction equation, which states that the rate of heat flow through a solid is proportional to the temperature gradient.
The equation is given by q_x = -kdT/dx. Since we know the heat flux q_0 at the left surface, we can integrate this equation from x = 0 to x = L to obtain the temperature distribution T(x) in terms of q_0 and the thermal conductivity k.
On the right surface, we can use the equation for heat transfer by convection and radiation, which is given by
q_n = h(T_6 - T_surrounding) + esigma(T_6^4 - T_surrounding^4)
where h is the convection heat transfer coefficient, e is the emissivity, sigma is the Stefan-Boltzmann constant, T_6 is the surface temperature and T_surrounding is the surrounding temperature.
Plugging in the given values we can find out the value of heat flux q_n and the temperature of the left surface of the wall (at x = 0).
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The readings, tA and tB, of two Celsius thermometers, A and B, agree at ice-point (0 oC) and steam point (100 oC), but elsewhere are related by equation tA = l + m tB + n tB 2 where l, m, and n are constants. When both thermometers are immersed in well-stirred oil bath, A registers 51 oC while B registers 50 oC. Determine the reading on B when A reads 25 oC
Answers
Answer:
Explanation:
From the case of well-stirred oil bath:
\(51=l+50m+n(50^{2})\rightarrow 51=l+50m+2500n\)
At the ice point, both of the thermometers show the same scale:
\(0 = l + m(0) + n(0^{2}) \rightarrow l = 0\)
At the steam point, again, both of the thermometers show the same scale:
\(100 = 0 + m(100)+n(100^{2}) \rightarrow 100 = 100m + 10000n \rightarrow 1 = m + 100n\)
By eliminating those equations, we find:
\(51=50(1-100n)+2500n \rightarrow 51=50-500n+2500n \rightarrow 1 = 2000n\)
so we can obtain that: \(n=\frac{1}{2000}=0.0005\) and \(m=1-100(0.0005)=1-0.05=0.95\)
Now, we have the complete description of the relation between A and B scale as: \(t_{A}=0.95t_{B}+0.0005t_{B}^{2}\)
So, for \(t_{A}=25^{0}C\):
\(25 = 0.95t_{B}+0.0005t_{B}^{2} \rightarrow 0.0005t_{B}^{2}+0.95t_{B}-25=0\)
\(t_{B}_{1,2}=\frac{-0.95\pm\sqrt{0.95^{2}-4(0.0005)(-25)}}{2(0.0005)}\approx-950\pm975\)
\(t_{B}_{1}=25^{0}C \vee t_{B}_{2}=-1925^{0}C\)
Match the jobs descriptions with the job titles.
budget analyst
bill collector
claims adjuster
Locate people who owe money and negotiate payment plans.
Review a company's expenses to determine if they exceed the targets.
Contact doctors and employers to ensure that there is no insurance fraud.
Answers
Bill collector: locate people who owe money and negotiate payment plans
Claims adjuster: contact doctors and employers to ensure that there is no insurance fraud.
Which of the following is false about most machine learning models?
They require numbers or collections of numbers as input.
They are flexible enough to handle all issues you might see in your dataset (lack of data, incorrect data, etc)
They are trained by iteratively adjusting their parameters to minimize a loss function.
Once trained, their model parameters can be used to make new predictions in a process called a “model inference algorithm.”
Answers
The false statement about most machine learning models is that: B. they are flexible enough to handle all issues you might see in your dataset (lack of data, incorrect data, etc).
What is machine learning?Machine learning (ML) is also referred to as deep learning or artificial intelligence (AI) and it can be defined as a subfield in computer science which is typically focused on the use of data-driven techniques (methods), computer algorithms, and technologies to develop a smart computer-controlled robot with an ability to automatically perform and manage tasks that are exclusively meant for humans or solved by using human intelligence.
Generally speaking, machine learning models are designed and developed to accept numerical data (numbers) or collections of numerical data (numbers) as an input.
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Which of these is not a reason we might want to measure the size of the economy?
O To track the magnitude of recessions
O To estimate the productive capacity of the country in case of war.
O To measure the happiness of people
O To compare living standards in different countries.
Answers
Measuring the size of the economy is important for various reasons, including tracking the magnitude of recessions, estimating the productive capacity of the country in case of war, and comparing living standards in different countries. However, measuring the happiness of people is not a direct reason for measuring the size of the economy, although some economists might argue that a larger economy generally leads to higher living standards and, therefore, greater happiness.
Answer: C
Explanation:
C. Happiness is important but it is not measurable
An effectively delivered lesson brings closure to students. Which of the following are benefits of providing closure in a lesson for middle grade students? Select all that apply.
Confirm understanding of what was learned.
Self-assess understanding of what was taught.
Share learning with peers.
Reinforce the concepts which were taught.
Reflect on how they engaged with the learning
Answers
Of the following, the ones that are benefits of providing closure in a lesson for middle-grade students are:
Confirm understanding of what was learned. (Option A)Self-assess understanding of what was taught. (Option B)Share learning with peers. (Option C)Reinforce the concepts which were taught. (Option D)Reflect on how they engaged with the learning. (Option E)What is closure in education?Closure refers to what the teacher performs at the conclusion of the class to promote wrap-up - it is a fast review to remind students what they have learned (or should have learned) and allows you to assess where the students are to aid you in planning the next lesson.
Closure as a teaching approach refers to the teacher's attempts to assist students in seeing the logical order of the lesson at key intervals during the presentation of subject/course materials and learning activities. What has a beginning should have a conclusion. What starts well should end well.
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what wireless network mode can quickly be used to share files and printers without a wap?
Answers
The wireless network mode that can quickly be used to share files and printers without a WAP (Wireless Access Point) is called an ad hoc network.
An ad hoc network, also known as a peer-to-peer network, allows wireless devices to connect directly to each other without the need for a central access point. In this type of network, each device functions as both a client and an access point, allowing them to communicate with each other and share resources such as files and printers.Setting up an ad hoc network is relatively easy and can be done without the need for additional hardware or software. However, it is important to note that ad hoc networks are generally less secure than traditional wireless networks that use a WAP, as there is no central point of control to manage access and security settings.To set up an ad hoc network, you will need to ensure that all devices you want to connect have Wi-Fi capabilities and that their Wi-Fi settings are configured correctly. Once all devices are connected, you can enable file and printer sharing on each device and then access shared resources from other devices on the network.In summary, an ad hoc network is a wireless network mode that can be quickly used to share files and printers without a WAP. However, it is important to note that ad hoc networks are generally less secure than traditional wireless networks that use a WAP.
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Describe some three materials with nanocrystalline structures and identify each example of those material
Answers
Ultrafine crystalline grains in the nanometer range that are separated by grain boundaries or interfaces define nanocrystalline materials.
A nanocrystalline structure: what is it?A polycrystalline substance with a few nanometer-sized crystallites is referred to as a nanocrystalline (NC) substance. These materials bridge the gap between traditional coarse-grained materials and amorphous materials devoid of long-range organisation. Materials that contain clusters, crystallites, or molecules with diameters between 1 and 100 nm are said to be nanostructured materials.
What is an example of a nanostructure?The gecko's foot, iridescent butterfly wings, and hydrophobic leaves are just a few examples of nanostructures found in nature. Scientists and engineers are employing biomimicry to develop new goods with these nano-inspired qualities.
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1)How do you distinguish between positive and negative logic system? Prove that an OR gate in a positive logic System is an AND gate in a negative logic system.
2)Give a brief statement that would help one remember the truth table of AND ,NAND, OR, NOR, EX-OR and EX -NOR logic gate functions ,irrespective of the number of input used.
Answers
Answer:
Positive logic is defined as a high voltage level representing a logic 1 and a low voltage level representing a logic 0. Negative logic is the reverse, i.e., a low voltage level represents a logic 1 and a high voltage level represents a logic 0.
Explanation:
Thanks
Joey has a car that uses the hand crank to open the windows. Joey is wondering where the energy comes from to open the windows.The sunHuman-powered energy from JoeyThe hand crankThe moving car
Answers
Explanation:
Joey has a car that uses the hand crank to open the windows. Joey is wondering where the energy comes from to open the windows.The sunHuman-powered energy from JoeyThe hand crankThe moving car
A horizontal, 25-mm diameter cylinder is maintained at a uniform surface temperature of 35°C. A fluid with a velocity of 0.05 m/s and temperature of 20°C is in cross flow over the cylinder. Determine whether heat transfer by free convection will be significant for (i) air, (ii) water, (iii) engine oil, and (iv) mercury. Answer: For air and oil free convection is likely to be important but not for mercury.
Answers
The phenomenon of free convection occurs when a fluid, in this case air, water, engine oil, and mercury, is in contact with a hot or cold surface. The temperature difference between the surface and the fluid causes the fluid to expand or contract, leading to a density difference and hence natural flow. In this specific problem, a horizontal cylinder is maintained at a uniform surface temperature of 35°C while a fluid with a velocity of 0.05 m/s and temperature of 20°C flows in crossflow over the cylinder.
To determine whether heat transfer by free convection will be significant for each of the given fluids, we need to compare the Grashof number (Gr) and Reynolds number (Re). The Grashof number characterizes the natural convection flow and is given by Gr = (gL^3ΔT)/ν^2, where g is the acceleration due to gravity, L is the cylinder diameter, ΔT is the temperature difference between the surface and the fluid, and ν is the kinematic viscosity of the fluid. The Reynolds number characterizes the flow regime and is given by Re = (ρuL)/μ, where ρ is the density of the fluid, u is the velocity of the fluid, L is the cylinder diameter, and μ is the dynamic viscosity of the fluid.For air and oil, the Grashof number is relatively large, indicating that natural convection is likely to be important. However, the Reynolds number is small, indicating that the flow is laminar. On the other hand, for mercury, the Grashof number is very small due to its high density and low thermal expansion coefficient, indicating that natural convection is negligible. Additionally, the Reynolds number is very large, indicating that the flow is turbulent. Therefore, heat transfer by free convection will be significant for air and oil, but not for mercury.
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Ajay is planning an open session on techniques to help reduce stress quickly in the workplace. He expects a lot of people to sign up. Ajay wants to convince the audience that using techniques to minimize stress does not need to be a long procedure and can be applied in the workplace daily. During the session, he needs to ensure that he is in a calm state of mind.
How can Ajay achieve this?
Answers
Ajay can achieve a calm state of mind by practicing the mindfulness techniques and incorporating stress reduction practices in his daily routine.
To ensure he is in a calm state of mind during the session, Ajay can employ various strategies to reduce stress and promote relaxation. One effective technique is practicing mindfulness.
Ajay can engage in mindfulness exercises such as deep breathing, meditation, or progressive muscle relaxation to calm his mind and body before the session. These techniques help to shift focus from stressful thoughts and promote a sense of calmness.Additionally, Ajay can incorporate stress reduction practices into his daily routine. This may include taking short breaks throughout the day to engage in activities that promote relaxation, such as going for a walk, practicing yoga, or listening to calming music. It is important for Ajay to prioritize self-care and make time for activities that help him relax and recharge.By consistently practicing these stress reduction techniques and incorporating them into his daily routine, Ajay can maintain a calm state of mind, which will enhance his ability to effectively deliver the session on stress reduction techniques in the workplace.
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What components should you inspect if the crankshaft end play is out of specifications?
Answers
Answer:
gdyc ddxtfvytg4dgtfxdwcftcd3rcby
If the crankshaft end play is out of specifications, check for:
Thrust Bearings
Main Bearings
Crankshaft
Crankshaft Thrust Washers
Engine Block
To understand the crankshaft when it is out of specifications, check for:
Thrust Bearings: Check the condition of the thrust bearings, which are located at the front and/or rear of the engine block. Excessive wear or damage to the thrust bearings can contribute to increased crankshaft end play.
Main Bearings: Inspect the main bearings, which support the crankshaft within the engine block. Worn or damaged main bearings can cause excessive movement of the crankshaft.
Crankshaft: Check the crankshaft itself for any signs of damage, such as scoring or bending. A damaged crankshaft may not sit properly within the bearings, leading to increased end play.
Crankshaft Thrust Washers: Some engines use thrust washers to control the end play of the crankshaft. Inspect these washers for wear, damage, or improper installation.
Engine Block: Check the engine block for any signs of damage or distortion that may affect the alignment and support of the crankshaft.
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use the range rule of thumb to find the usual range of x values. enter answer as an interval using square-brackets and only whole numbers.
Answers
The minimum value of the interval is two standard deviations below the mean (μ - 2σ), while the maximum value of the interval is two standard deviations above the mean (μ + 2σ).
The range rule of thumb states that the usual measures in an interval are within two standard deviations of the mean.
The parameters you are given to solve this problem are:
Mean μ.
Standard deviation σ.
Hence the lower bound of the interval is of:
μ - 2σ -> you should subtract two standard deviations from the mean.
The upper bound of the interval is of:
μ + 2σ -> you should add two standard deviations to the mean.
Therefore, The minimum value of the interval is two standard deviations below the mean (μ - 2σ), while the maximum value of the interval is two standard deviations above the mean (μ + 2σ).
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Centrifugal pump delivers water against a net head of 14. 5 m and at designed speed of 1000 rpm. The vanes are curved back at an angle of 300 with the periphery. The impeller diameter is 300 mm and outlet width 50 mm. Determine the discharge of the pup, if the manometric efficiency is 95 %
Answers
The discharge of the pump is approximately 0.0744 cubic meters per second.
To determine the discharge of the centrifugal pump, we need to consider the head, impeller diameter, outlet width, and the manometric efficiency.
Given:
Net head (H) = 14.5 m
Impeller diameter (D) = 300 mm = 0.3 m
Outlet width (W) = 50 mm = 0.05 m
Manometric efficiency (η) = 95% = 0.95
The discharge (Q) can be calculated using the following formula:
Q = (π/4) * D^2 * W * N / (g * H * η)
where:
π = 3.14159 (pi)
D = Impeller diameter
W = Outlet width
N = Speed of the pump in revolutions per minute (rpm)
g = Acceleration due to gravity (9.81 m/s^2)
H = Net head
η = Manometric efficiency
Substituting the given values into the formula:
Q = (3.14159/4) * (0.3)^2 * 0.05 * 1000 / (9.81 * 14.5 * 0.95)
Simplifying the equation:
Q ≈ 0.0744 m^3/s
Therefore, the discharge of the pump is approximately 0.0744 cubic meters per second.
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In MD5, the length of a message is padded to ____ bits.
a.32
b.64
c.128
d.512
Answers
The length of a message in MD5 is padded to 64 bits. Option b is the correct answer.
MD5 (Message Digest Algorithm 5) is a widely used cryptographic hash function. It processes messages in fixed-size blocks of 512 bits. When the length of a message is not a multiple of 512 bits, it needs to be padded to ensure that the final message block is complete. In MD5, the padding involves appending a '1' bit followed by a variable number of '0' bits until the length reaches 64 bits, resulting in a complete 512-bit block. Therefore, the correct option is (b) 64.
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Some analysts believe that the exclusion of some traditional partners from the "democratic camp" by the United States will deepen the gap between the two sides; the invitation of some countries or regions suspected of "democratic retrogression" will affect the "credibility" of the summit.
Answers
The exclusion of some traditional partners from the "democratic camp" by the United States will undoubtedly deepen the gap between the two sides.
About summit :
This move by the US is seen as a sign of its dissatisfaction with the policies and behavior of these countries. In addition, the invitation of some countries or regions suspected of "democratic retrogression" may lead to further erosion of the credibility of the summit in the eyes of the invited countries, as well as the international community. At the same time, it is worth noting that the United States must consider the consequences of such actions and the possible damage to its international image. If the US is seen as selectively choosing partners, it may undermine its overall influence in the world.
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An object in space is observed to have an altitude of 2209 km, a velocity of 7000 m/s and an elevation angle (φ ) of 40o . (a) Give a complete description of the trajectory. (b) Is there anything special or different about this trajectory? (c) Find v,θ , φ when r = 6.378 x 10 6 m. Sketch the trajectory and locate this point.
Answers
Answer: velocity is ze rezon zat you are aving issues
A series circuit has 4 identical lamps. The potential difference of the energy source is 60V. The total resistance of the lamps is 20 Ω. Calculate the current through each lamp.
Answers
Answer:
\(I=3A\)
Explanation:
From the question we are told that:
Number of lamps \(N=4\)
Potential difference \(V=60v\)
Total Resistance of the lamp is \(R= 20ohms\)
Generally the equation for Current I is mathematically given by
\(I=\frac{V}{R}\)
\(I=\frac{60}{20}\)
\(I=3A\)
an hv battery for a full-electric drive vehicle can weigh more than _____ pounds.
Answers
An HV (High Voltage) battery for a full-electric drive vehicle can weigh more than several hundred pounds. The exact weight of an HV battery can vary depending on various factors such as the vehicle's size, range, and battery capacity.
In larger electric vehicles like SUVs or trucks, the HV battery can weigh anywhere from 800 to 1,500 pounds or more. Smaller electric vehicles such as compact cars or hatchbacks may have HV batteries weighing between 400 and 800 pounds.It's important to note that battery technology is constantly evolving, and advancements are being made to improve energy density and reduce the weight of HV batteries while maintaining their performance and range. Therefore, the weight of HV batteries can vary based on the specific vehicle and the battery technology used.
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Earth completes one full ____ on its axis every 24 hours
Answers
Answer:
rotation
Explanation:
I just answered this!
A cylindrical rod of copper (E = 110 GPa) having a yield strength of 240 MPa is to be subjected
to a load of 6660 N. If the length of the rod is 380 mm, what must be the diameter to allow an
elongation of 0.50 mm?
Answers
Answer:
"7.654 mm" is the correct solution.
Explanation:
According to the question,
\(E=110\times 10^3 \ N/mm^2\)\(\sigma_y = 240 \ mPa\)\(P = 6660 \ N\)\(L = 380 \ mm\)\(\delta = 0.5 \ mm\)Now,
As we know,
The Elongation,
⇒ \(E=\frac{\sigma}{e}\)
\(=\frac{\frac{P}{A} }{\frac{\delta}{L} }\)
or,
⇒ \(\delta=\frac{PL}{AE}\)
By substituting the values, we get
\(0.5=\frac{6660\times 380}{(\frac{\pi}{4}D^2)(110\times 10^3)}\)
then,
⇒ \(D^2=58.587\)
\(D=\sqrt{58.587}\)
\(=7.654 \ mm\)
The flat belts are moving at the speeds shown. Plot both the velocity profile within the oil film and the shearstress distribution. The pressures at A and B are atmospheric. Take mo
Answers
Shear stress values and the velocity profile are v=0.4m/s,
t=45 N/m^ 2
Explanation:
A) Velocity profile=0.6m/s, and 0.2m/s
relative velocity=0.6m/s-0.2m/s
v=0.4m/s
∵ thickness=4 mm
t=4x10^ -3m
B) Shear stress t=R v/t
=0.45x0.4/4x10^-3
t=45 N/m^ 2
Shear velocity, also known as friction velocity, is a way to express a shear stress in velocity units. Comparing actual speeds, like the flow in a stream, to ones that reflect shear between layers of flow is a useful technique in fluid mechanics.
Due to its close connection to earthquakes and the downslope movement of earth materials, the resulting shear has a significant impact on nature. Either solids or liquids can experience shear stress.
Using equation, one can determine the shear velocity.
U*= √r/p in the general case.
INCOMPLETE QUESTION:
The flat belts are moving at the speeds shown. Plot both the velocity profile within the oil film and the shear stress distribution. The pressures at A and B are atmospheric. Take u^0=0.45N.s/m2 and P^0=920KG/M3
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.
engineering controls are devices such as self sheathing needles and sharps containers to block or eliminate the sharp risk.
Answers
The given statement that "engineering controls are devices such as sharps containers and self-sheathing needles used to block or eliminate the sharp risk" is true.
Engineering control devices protect workers by removing hazardous conditions or by placing a barrier between the hazard and the worker. Examples of engineering control devices include exhaust ventilation that captures and exits airborne emissions or machine guards that shields the worker.
It can be stated as engineering controls devices reduce or prevent hazards from coming into direct contact with workers. Therefore, the given statement is true because the devices such as sharps containers and self-sheathing needles to block or remove the sharp risk are examples of engineering control devices.
"
Complete question
engineering controls are devices such as self sheathing needles and sharps containers to block or eliminate the sharp risk.
True
False
"
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A man who lived on the top floor of a twenty story building had to go up and down daily for work, and of course, for food and the other necessities. On most days he could only ride the elevator to the fifteenth story, and he would have to walk the rest of the way. When it rained, however, he could ride all the way up to the twentieth story. Why?.
Answers
Main Answer:
On most days he could only ride the elevator to the fifteenth story, and he would have to walk the rest of the way
sub heading:
explain elevator?
Explanation:
1.elevator, also called lift, car that moves in a vertical shaft to carry passengers or freight between the levels of a multistory building.
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