As a spaceship decreases its distance from the Earth, the gravitational force on the spaceship due the Earth:stays the sameincreasesdecreases

Answer:

B. It can be answered using measurements.

Explanation:

Scientific inquiry can be defined as the various ways, techniques and approach used by scientists to study the world and provide a detailed description (information) based on the empirical evidence derived from the investigation.

Measurements can be defined as a technique which typically involves the process of identifying and determining the dimensions, quality and quantity of a physical object.

Hence, the statement which best describes a characteristic of a question that can be answered through scientific inquiry is that, it can be answered using measurements. Using scientific inquiry to answer questions entails using measurements to propose specific and evidential explanations, as well as back up theories associated with the question.

Answer:

A. fight or flight

Explanation:

but uh tend and befriend could be an option to get out of this situation ;)

a. Fight-or-flight

The fight-or-flight or the fight-flight-or-freeze response is a physiological reaction that takes place in response to a perceived harmful event, attack, or danger to survival. It became first described by Walter Bradford Cannon.

“The fight or flight response, or stress response, is triggered by a release of hormones either prompting us to live and fight or run away and flee,” explains psychologist Carolyn Fisher, Ph.D. “during the response, all bodily systems are operating to maintain us alive in what we've perceived as a dangerous scenario

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if a child swinging to and fro on a playground swing stand up, her time for a to and fro swing is unchanged. The correct option is b.

When a child is swinging to and fro on a playground swing, their time for a to and fro swing is determined by the length of the swing and the force of gravity. The child's weight provides the necessary force to move the swing back and forth. When the child stands up on the swing, their weight does not change, and neither does the length of the swing.

Therefore, the force of gravity acting on the swing remains constant, and the time for a to and fro swing is also unchanged. However, standing up on the swing may affect the amplitude of the swing, which is the distance traveled by the swing from one side to the other.

Therefore the correct option is b.

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Answer:

every particle attracts every other particle in the universe with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.

Explanation:

Answer: Newton's law of gravitation, states that any particle of matter in the universe attracts any other with a force varying directly as the product of the masses and inversely as the square of the distance between them

Explanation: More of a simple answer is a law stating that any two masses attract each other with a force equal to a constant (called the gravitational constant) multiplied by the product of the two masses and divided by the square of the distance between them.

For x-rays, an electron source, a mechanism of accelerating the electrons to high speeds, and a target for the accelerated electron to contact with are required, and these are also components of the cathode assembly. The function of the focusing cap is to concentrate the electron beam.

To make x-rays, you need three things: an electron source, a way to accelerate the electrons to high speeds, and a target for the accelerated electron to contact with. X-rays are created when free electrons release energy when they contact with atomic particles in the target.

A cathode head, a filament, and first and second focusing tabs comprise the cathode assembly. The focusing caps are used to focus electron beams in the tube.

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When the ball is at the highest point of the circle its velocity and acceleration directions are: B. ←V ↓a.

In Science, an acceleration can be defined as the rate of change of velocity of an object with respect to time.

In Science and Mathematics, velocity can be defined as the distance covered by an object per unit of time in a specific direction.

This ultimately implies that, velocity and acceleration are vector quantities because they have both magnitude and direction.

In this context, we can reasonably infer and logically deduce that the velocity of the ball would be towards the left direction while its acceleration be downward as shown below;

←V ↓a.

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Missing information:

The question is incomplete and the complete question is shown in the attached picture.

Answer:

The magnitude of the net electric field is:

\(E_{net}=90.37\: N/c\)

Explanation:

The electric field due to q1 is a vertical positive vector toward q1 (we will call it E1).

On the other hand, the electric field due to q2 is a horizontal positive vector toward q2(We will call it E2).

Knowing this, the magnitude of the net electric field will be the E1 + E2.

Let's find first E1 and E2.

The electric field equation is given by:

\(|E_{1}|=k\frac{|q_{1}|}{d_{1}^{2}}\)

Where:

\(|E_{1}|=(9*10^{9})\frac{|-2.60*10^{-9}|}{0.538^{2}}\)

\(|E_{1}|=80.84\: N/C\)

And E2 will be:

\(|E_{2}|=k\frac{|q_{2}|}{d_{2}{2}}\)

\(|E_{2}|=(9*10^{9})\frac{|-8.30*10^{-9}|}{1.36^{2}}\)

\(|E_{2}|=40.39\: N/C\)

Finally, we need to use the  Pythagoras theorem to find the magnitude of the net electric field.

\(E_{net}=\sqrt{E_{1}^{2}+E_{2}^{2}}\)

\(E_{net}=\sqrt{80.84^{2}+40.39^{2}}\)

\(E_{net}=90.37\: N/c\)

I hope it helps you!

Answer:

+90.3 N/C

Explanation:

acellus

Given data:

Height of the tower;

The velocity is given as,

Here, u is the initial velocity of the swimmer (u=0), and g is the acceleration due to gravity (g=9.8 m/s²).

Substituting all known values,

Therefore, the swimmer's velocity on hitting the water is 14 m/s.

The concept law of supply shows that price and quantity supplied move in the same direction.

The law of supply relates price changes for a product to the quantity supplied. In differentiation from the law of demand, the law of supply relationship is coordinated, not converse. The higher the cost, the higher the quantity provided. Lower costs mean decreased supply, all else held equal. Higher prices donate suppliers an incentive to supply more of the item or product, expecting their costs aren't expanding as much. Lower costs result in a fetched crush that checks supply. As a result, supply inclines are upwardly inclined from cleared out to right. As with demand, supply limitations may constrain the cost flexibility of supply for a product, whereas supply shocks may cause an unbalanced cost to alter for a basic commodity.

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Answer:

Explanation:

From the question we are finding the final velocity of the bicycle

To find the final velocity given the initial velocity , acceleration and time we use the formula

v = u + at

where

v is the final velocity

u is the initial velocity

a is the acceleration

t is the time

From the question

u = 10 m/s

a = 6 m/s²

t = 20 s

Substitute the values into the above formula and solve

That's

v = 10 + 6(20)

= 10 + 120

We have the final answer as

Hope this helps you.

Answer:B

26m/s

Explanation:

Answer:

Answer B is the correct answer: "Motion of one projectile as seen from the other is a straight line."

Explanation:

Let's write the equations of motion for each projectile, using that projectile \(a\) is launched with velocity \(a\) which has components associated with the angle of launching, given in x and y coordinates as: \(a_x\,\,and\,\,a_y\).

Similarly, assume that projectile b is launched with velocity \(b\) with components due to the launching angle = \(b_x\,\,and \,\,b_y\)

then the equations of motion for the two projectiles launched at the same time (t) from the same spot (position that we assume to be at the origin of coordinates to simplify formulas) are:

\(x_a=a_x\,t\\y_a= a_y\,t-\frac{1}{2} g\,t^2\\and\\x_b=b_x\,t\\y_b= b_y\,t-\frac{1}{2} g\,t^2\)

therefore, from the frame of reference of projectile "b", the x and y position of projectile "\(a\)" would be:

\(x_{a\,b}= x_a-x_b= a_x\,t-b_x\,t=(a_x-b_x)\,t\)  which is linear in "t"

\(y_{a\,\,b}=y_a-y_b= a_y\,t-\frac{1}{2} g\,t^2-\left[ b_y\,t-\frac{1}{2} g\,t^2\right]=(a_y-b_y)\,t\) which is also linear in t.

Therefore the motion of one projectile with reference to the other is a straight line (answer B)

Notice as well that this two projectiles cannot collide because they have been launched together, and supposedly at different speeds and angles. The only way that they can share the same x-coordinate and the same y-coordinate at the same time "t" is if their velocity components are equal, which is not what we are told.

\(x_a=x_b\\a_x\,t= b_x\,t\\and\\y_a= y_b\\a_y\,t-\frac{1}{2} g\,t^2= b_y\,t-\frac{1}{2} g\,t^2\\a_y\,t=b_y\,t\\a_y=b_y\)

Answer:

The black lines represent the energy absorbed by the electrons.

Explanation:

Atoms emit lights when they are excited. These lights are of particular wavelengths that match with different colors. A series of colored lines appear along with spaces in the middle of the two colors. The middle of the colors is filled with dark spaces. Each spectral line of an element represents a specific characteristic of the element. These colored lines appearing in the form of series are termed to be the atomic spectrum of the element. Identification of the elements is done through the line of the spectrum they possess.

Answer:

(B) The black lines represent the energy absorbed by the electrons.

Explanation:

Answer:

4.5m/s

Explanation:

Given parameters:

Mass of object  = 31kg

Net force  = 25N

radius  = 25m

Unknown:

Velocity  = ?

Solution:

To solve this problem, we must understand that the net force here is a centripetal force.

        F  = \(\frac{mv^{2} }{r}\)

F is the centripetal force

m is the mass

v is the velocity

m is the mass

               25  = \(\frac{31 x v^{2} }{25}\)  

               31v²   = 625

                 v²   = 20.2

                v  = 4.5m/s

The equivalent distance in miles is 3.78 miles.

The distance Randy needs to travel in miles is calculated as follows;

5280 ft = 1 mile

20,000 ft = ? miles

= 20,000 ft / (5280 ft/mile)

= 3.78 miles

If after the potato sack race, Randy needs to drive to an office chair race that is 20,000 feet away. The equivalent distance in miles is 3.78 miles.

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Answer:

9.0 m/s/s

Explanation:

Given the following data;

Initial velocity = 10 m/s

Final velocity = 55 m/s

Time = 5 seconds

To find the average acceleration;

In physics, acceleration can be defined as the rate of change of the velocity of an object with respect to time.

This simply means that, acceleration is given by the subtraction of initial velocity from the final velocity all over time.

Hence, if we subtract the initial velocity from the final velocity and divide that by the time, we can calculate an object’s acceleration.

Mathematically, acceleration is given by the equation;

\(Acceleration (a) = \frac{final \; velocity - initial \; velocity}{time}\)

Substituting into the equation;

\(a = \frac{55 - 10}{5}\)

\(a = \frac{45}{5}\)

Acceleration, a = 9.0 m/s²

Therefore, the average acceleration of the motorcycle is 9 meters per seconds square because it's experiencing a uniform velocity or motion.

Energy cannot be generated or destroyed; it can only be changed from one form of energy to another, according to the rule of conservation of energy. This implies that a system always possesses the same amount of energy, barring external energy addition.

According to the rule of conservation of energy, energy cannot be generated or destroyed. It can only be changed from one form to another, though. It is simply changed from a form that we can use to one that is less useful. Energy problem as a result of this

Energy efficiency is necessary to save expenses and extend the life of the resources.

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Answer:

Weight = 3217.68

Explanation:

N times Gravity = weight

Gravity= 9.81

The weight of the emperor penguin whose mass is 328 Kg on is 3214.4 Newtons.

Weight is the force exerted by the earth on an object at the surface of the earth. Mathematically -

W = m x g

where -

[m] is the mass of object

[g] is acceleration due to gravity

Given is the mass of an emperor penguin as 328 Kg.

We can write -

Mass [m] = 328 kg

Acceleration due to gravity [g] = 9.8 m/s²

Therefore, the weight of the emperor penguin will be

W[P] = m x g = 328 x 9.8 = 3214.4 Newtons

Hence, the weight of the emperor penguin whose mass is 328 Kg on is 3214.4 Newtons

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Answer:

The answer is B. The voltage and resistance would be the same

Answer:

the workenergy principle is measured in joules

Answer:

1.11111 century mother duck

The fastest rollercoaster in the world is the formula rossa in abu dhabi, united arab emirates, speed of this is 240 km/h (149.1 mph)

The rate at which an object's distance traveled changes is measured by its speed. In terms of measurement, speed is a scalar, meaning it has magnitude but no direction. Speed is the rate at which an object moves over a given distance. a thing that travels at a high rate of speed and covers a lot of distance quickly. A slow-moving object, on the other hand, travels a comparatively short distance in the same amount of time when moving at a low speed. An object with zero speed is completely immobile.

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Answer: Galileo's laws of Motion determined that the natural state of an object is rest or uniform motion, objects always have a velocity, sometimes that velocity has a magnitude of zero rest. objects resist change in motion, which is called inertia.

Explanation:

Galileo failed to formulate equations to describe this type of motion because he was unable to prove this motion by direct or obvious means.

Galileo introduced two different propositions to describe motion of an object, which includes;

Galileo considered to define uniform acceleration as change in speed over equal change in distance or change in velocity over equal change in time of motion.

Galileo chose the later definition, "uniform acceleration as the change in velocity over equal change in time of motion".

Galileo failed to formulate equations to describe this type of motion because he was unable to prove this motion by direct or obvious means.

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Hard glass is a type of glass characterized by its high resistance to thermal and mechanical stress. It is commonly used in scientific and industrial applications. The components of glass can be classified into formers, intermediates, and modifiers.

Hard glass, also known as borosilicate glass, is a type of glass that possesses high resistance to thermal expansion and mechanical stress. It is composed mainly of silica (SiO2) and boron oxide (B2O3), which act as formers in the glass structure. The formers provide the basic framework of the glass and contribute to its high durability and thermal stability.

In addition to formers, glass can also contain intermediates and modifiers. Intermediates, such as alumina (Al2O3) and magnesia (MgO), help in reducing the melting point of the glass and improve its workability during the manufacturing process. Modifiers, such as sodium oxide (Na2O) and calcium oxide (CaO), alter the properties of the glass, such as its refractive index and chemical resistance.

By combining the right proportions of these components, glassmakers can produce glass with specific characteristics suitable for various applications, ranging from laboratory equipment and optical lenses to household items and industrial containers.

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We have three situations involving a positively charged particle passing through a uniform magnetic field. In each situation, the velocity of the particle has the same magnitude but different orientations.

We need to rank these situations according to the period (T).
The period (T) of a charged particle's motion in a uniform magnetic field depends on the charge (q), mass (m), magnetic field strength (B), and the angle (θ) between the velocity vector and the magnetic field.
The formula for the period is: T = (2πm) / (|q|Bsinθ)
Here, θ is the angle between the particle's velocity and the magnetic field.
1. When the velocity is parallel to the magnetic field (θ = 0° or 180°), the period will be infinite as sinθ = 0, and the particle will not experience any force due to the magnetic field.
2. When the velocity is perpendicular to the magnetic field (θ = 90°), the period will be minimum as sinθ = 1, and the charged particle will experience the maximum force due to the magnetic field.
3. For any other orientation of the velocity with respect to the magnetic field (0° < θ < 180° and θ ≠ 90°), the period will fall between the minimum and infinite value.
To rank the situations according to the period T:
- Situation with parallel velocity (θ = 0° or 180°) will have the largest period (infinite)
- Situation with perpendicular velocity (θ = 90°) will have the smallest period
- Situation with any other orientation (0° < θ < 180° and θ ≠ 90°) will have a period between the largest and smallest periods
Keep in mind that these rankings are based on the angle between the velocity and the magnetic field, which affects the period of the charged particle's motion.

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We have three situations involving a positively charged particle passing through a uniform magnetic field. In each situation, the velocity of the particle has the same magnitude but different orientations.

We need to rank these situations according to the period (T).
The period (T) of a charged particle's motion in a uniform magnetic field depends on the charge (q), mass (m), magnetic field strength (B), and the angle (θ) between the velocity vector and the magnetic field.
The formula for the period is: T = (2πm) / (|q|Bsinθ)
Here, θ is the angle between the particle's velocity and the magnetic field.
1. When the velocity is parallel to the magnetic field (θ = 0° or 180°), the period will be infinite as sinθ = 0, and the particle will not experience any force due to the magnetic field.
2. When the velocity is perpendicular to the magnetic field (θ = 90°), the period will be minimum as sinθ = 1, and the charged particle will experience the maximum force due to the magnetic field.
3. For any other orientation of the velocity with respect to the magnetic field (0° < θ < 180° and θ ≠ 90°), the period will fall between the minimum and infinite value.
To rank the situations according to the period T:
- Situation with parallel velocity (θ = 0° or 180°) will have the largest period (infinite)
- Situation with perpendicular velocity (θ = 90°) will have the smallest period
- Situation with any other orientation (0° < θ < 180° and θ ≠ 90°) will have a period between the largest and smallest periods
Keep in mind that these rankings are based on the angle between the velocity and the magnetic field, which affects the period of the charged particle's motion.

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Answer: 98cm

Explanation:

Dimension of rectangle = 30cm by 25cm

Length(l) = 30cm

Width(w) = 25cm

Perimeter of a rectangle = 2(l + w)

Quadrant of circle cut away of each side of the rectangle :

Radius = 7 cm =

That is, the dimension of the triangle reduces by 2 * 7 = 14cm

New length = 30 - 14 = 16cm

New width = 25 - 14 = 11cm

The four corners =( 4 × 2πr ) / 4

2πr = 2 × 22/7 × 7 = 44cm

Perimeter = 2(16cm + 11cm)

= 2(27cm)

Perimeter = 54cm + 44 = 98cm

The depth of that point within the fluid, the pressure at the fluid's surface, the density of the fluid, and the weight of the fluid directly above that point.

Fluid is a state of matter that is characterized by its ability to move and take on the shape of its container. Fluids are composed of particles that are free to move about, and can also exist as a gas or a liquid. Fluids are an important part of everyday life, with applications ranging from transportation of goods to the operation of complex machinery. Fluids are also used to study the behavior of particles in motion, as well as to understand the properties of matter in general.

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Answer:

On Waves. Quantum mechanically, an electron can be described by a wave function oscillating in space and time that has mean values equal to the expectation values of observables corresponding to given operators. ... Electrons are fermions. They are charged particles. in short the quantum theory

i hope its helpful !

Additionally, survey meters are only one tool in a larger toolkit for assessing radiation hazards, and other factors such as exposure time, distance from the source, and shielding may also be important considerations.

The statement is partially true. Survey meters are used to measure ionizing radiation in the environment, and they can be calibrated to read out in different units depending on the type of radiation and the intended application. However, roentgens are not commonly used as a unit of measurement anymore, as they have been largely replaced by the sievert (Sv) and the gray (Gy).

In the United States, survey meters are typically calibrated to measure radiation in units of milliroentgens per hour (mR/hr) or microsieverts per hour (μSv/hr). The former unit is used more commonly in the United States, while the latter is more commonly used internationally. Some survey meters can also be calibrated to read out in counts per minute (CPM), which is a measure of the number of radiation events detected per minute.

It is worth noting that while survey meters are a useful tool for measuring ionizing radiation, they have limitations and can only detect certain types of radiation. For example, they may not be able to detect non-ionizing radiation such as radio waves or microwaves. Additionally, survey meters are only one tool in a larger toolkit for assessing radiation hazards, and other factors such as exposure time, distance from the source, and shielding may also be important considerations.

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C. Increasing the voltage in a circuit increases its power.

is the relationship between voltage and power in a circuit

The watt is the unit of power measurement. The power will quadruple if the voltage increases. In a circuit, if the voltage (or electrical pressure) is raised, the current (flow of electrons) will rise in direct proportion; for example, doubling the voltage will result in doubling the current flow.

Several different voltages will produce the same amount of power as long as you can pull adequate current (amps) from the battery. Hence, hypothetically, a higher voltage does not automatically translate into more power. Typical voltage values for peak (max) volts are 40, 80, and 120 volts.

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Answer:

400m

Explanation:

From Newton's law of motion;

S = ut + 1/2 at2

Where U is initial velocity

a is acceleration

t is velocity hence;

S is distance covered

S = 20×10 + 1/2 × 4×(10)^2

= 200 + 200 = 400m