we actually made an approximation in this lab that the tension (force pulling the cart) is equal to the weight of the washers. make a fbd and write an equation for the washers as they accelerate. based on that equation, explain why is it a reasonable approximation.

Answer:

0.5kg

Explanation:

Mass = Weight / Gravitational field strength

Mass = 4.9 / 9.8

Mass = 0.5

Explanation:

∑τ = Iα

(6 N) (0.80 m) = I (0.5 rad/s²)

I = 9.6 kg m²

How To:

How do you add two vectors?  

To add or subtract two vectors, add or subtract the corresponding components. Let →u=⟨u1,u2⟩ and →v=⟨v1,v2⟩ be two vectors. The sum of two or more vectors is called the resultant. The resultant of two vectors can be found using either the parallelogram method or the triangle method .

Forces on object must be concurrent. Object must not deform under the forces. Object must not change shape. Object must not be large. Object must not rotate.

Force is a physical quantity that represents the interaction between two objects. Force can cause an object to accelerate or change its velocity. It can also cause a change in an object's shape or orientation. There are several types of force, such as gravitational force, electromagnetic force, and nuclear force.

An object can be treated as a particle under the following conditions:

Forces on object must be concurrent. Object must not deform under the forces. Object must not change shape. Object must not be large. Object must not rotate.

It's important to note that the concept of treating an object as a particle is a simplifying assumption used in some branches of physics, such as mechanics, and is only valid under certain conditions.

When an object is treated as a particle, it is assumed to have no internal structure, and that all forces acting on it act at a single point. The object is also assumed to be small enough that its deformation or shape change under forces can be ignored. Additionally, it is also assumed that the object does not rotate.

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The frequency of CpG (cytosine-phosphate-guanine) dinucleotides would need to be higher than expected by chance in a given DNA region in order for it to be designated as a CpG island.

Typically, a region is considered a CpG island if it is at least 200 base pairs long and has a GC content greater than 50% and an observed to expected CpG ratio of 0.6 or greater. This means that the frequency of CpG dinucleotides is higher than would be expected by chance based on the overall frequency of Cs and Gs in the genome.

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The specific heat of aluminum is 0.902 J/g⋅C. An aluminum pie pan with a mass of 473 g absorbs 187,256.324 J of heat to raise the oven temperature from room temperature (23.00°C) to 190.6° C.

To calculate the heat absorbed by the aluminum pie pan, we will use the following formula:

Q = m × c × ΔT

where Q is the amount of heat absorbed, m is the mass of the aluminum pie pan, c is the specific heat of aluminum, and ΔT is the change in temperature.

Given that the mass of the aluminum pie pan is 473 grams and the specific heat of aluminum is 0.902 J/g⋅∘C, we can substitute the values into the formula:

Q = 473 g × 0.902 J/g⋅°C × (190.6 °C - 23.00 °C)

Q = 187,256.324 J

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Answer:

Slope y2-y1/x2-x1

m=mass/volume

slope represents density(g/ml)

Explanation:

PLS MARK BRAINLIEST

Slope = Mass/ Volume = Density. The given slope represents Density.

Thus, Density is the mass of a material substance per unit volume. d = M/V, where d is density, M is mass, and V is volume, is the formula for density.

Grams per cubic centimeter are a typical unit of measurement for density.  For instance, air weighs 1.2 pounds per cubic metre. In textbooks and manuals, the densities of typical solids, liquids, and gases are stated.

The volume of a body is equal to the mass multiplied by the density (M = Vd), while the volume is equal to the mass divided by the density (V = M/d). Density provides a straightforward way to determine a body's mass from its volume, or vice versa.

Thus, Slope = Mass/ Volume = Density. The given slope represents Density.

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A region of a fluid flow near a solid surface called the hydrodynamic boundary layer is where the flow patterns are directly affected by viscous drag from the surface wall. (for more detail scroll down)

Hydrodynamics can shed light on the potential water movement patterns through a dam. Engineering frequently uses hydrodynamics. Some studies concentrate mainly on the flow over and through pipes.

A region of a fluid flow called the Thermal Boundary Layer is located close to a solid surface and is where the fluid temperatures are immediately affected by heating or cooling from the surface wall.In the idea of heat transfer, there is a thermal boundary layer. Thermal barrier layers have different temperatures in them.Although comparable characteristics between the two boundary layers may be anticipated, they do not typically coincide.  Temperature changes can be seen well outside the dynamic boundary layer and liquid metals have a tendency to conduct heat from the wall readily.  Outside of the thermal layer, other materials frequently exhibit velocity variations as well.  For the formation of a hydrodynamic boundary layer, a thermal boundary layer that controls the thermodynamic interaction of heat transmission is required.

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The Tip Speed Ratio (TSR) is the ratio of the speed of the wind turbine blade to the wind speed. It is defined as the speed of the blade tips divided by the wind speed and is represented by λ.

The Tip speed ratio is defined as the ratio of the wind speed at the tips of the turbine blades to the wind speed. The ratio is used to compare the performance of various wind turbines. The performance of the wind turbine is directly related to the tip speed ratio. This ratio is important as it helps in determining the amount of energy that can be harvested from the wind.

It is also important because it is used to measure the efficiency of a wind turbine. The higher the tip speed ratio, the more efficient the turbine is in capturing the energy from the wind.b) The operation of the wind turbine is optimized when the tip speed ratio changes. The tip speed ratio can be changed by altering the rotational speed of the blades, the length of the blades, or the wind speed. When the tip speed ratio is optimized, the wind turbine can operate at its maximum efficiency.

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The value of the normal force on the object of mass 50 kg such that it experiences a friction force of 5 Newton is equal to 490 Newton.

Friction force is a force that opposes the force. It acts in the direction opposite to the intention of the motion of the object ,it is a non conservative force in nature.

Normal force is a type of force that's perpendicular to the surface of the object when it is placed in contact with another surface the SI unit of normal force is the same as force in general that is Newton.

Given:

Surface area of the sphere = 6 u

Mass of the sphere = 50 kg

First we use the mass value of the sphere, we will calculate the value of the weight of a sphere so that we know force against which against which the normal force will be acting.

Weight of the sphere = 50 × 9.8

Weight of the sphere = 490 Newton

Now since the normal force is being used to balance of the weight of the sphere we can say that the value of the normal force will be equal to 490 Newton.

Therefore, The value of the normal force on the object of mass that it experiences a friction force of 5 Newton is equal to 490 Newton.

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Answer: a

Explanation: :)

Answer: False

Explanation:

Answer:

10 N

Explanation:

Given that,

A man pushes against a tree with a force of 10 newtons.

We need to find the amount of force exerted by the tree on the man.

The force exerted by the tree on the man will be equal to the force that the man exert on the tree as per Newton's third law of motion.

It means the tree exert 10 N force on the man. Hence, the correct option is (c) i.e. 10 N.

Answer:

45.31 J

Explanation:

We are given that

Mass of baseball , m=0.145 kg

Initial velocity, u=0

Final velocity, v=25 m/s

We have to find the work done on the baseball to bring it from rest to 25 m/s

We know that

Work done = Change in kinetic energy

Work done, W=\(\frac{1}{2}m(v^2-u^2)\)

Using the formula

Work done, W\(=\frac{1}{2}(0.145)((25)^2-0)\)

Work done=\(\frac{1}{2}(0.145)(625)\)

Work done, W=45.31 J

Hence, the work done on the baseball to bring it from rest to 25 m/s

=45.31 J

B. Keeping his back to the space station, pass the basketball into space away from the space station.

By passing the basketball into space away from the space station, Commander M.J. Jordan would experience a reactive force in the opposite direction due to Newton's third law of motion. This reactive force would cause him to move in the direction opposite to that of the basketball's movement, providing him with propulsion to propel himself towards the space station.

On the other hand, if Commander M.J. Jordan were to pass the basketball towards the space station while facing it, the reactive force would push him further away from the space station, making it more difficult for him to return safely.

Therefore, option B is the correct choice for safely returning to the space station.

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A jetliner goes from rest to a takeoff speed of 183 mi/h in 36.1 s.

the magnitude of its average acceleration is 81.80

Take off speed of the jetliner = 183 mi/h

so time taken = 36.1s

average acceleration = change in velocity / time taken

= (183 x 1609.3)/ 3600

= 81.80 m/\(s^{2}\)

The rate at which an object’s velocity changes is measured as its acceleration. Since it is a vector, speed and direction are also included. In the SI, acceleration is measured in meters per second squared (m s 2).

An object’s velocity is how quickly it is travelling in a specific direction. A vector, that is. In the SI, velocity is measured in meters per second (m s).

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Answer:

Explanation:

Definition: Noise pollution is generally defined as regular exposure to elevated sound levels that may lead to adverse effects in humans or other living organisms.

Measures to be taken:

The molecule that absorbs light at 340 nm is FAD.

The molecule that absorbs light at 340 nm is FAD, which stands for flavin adenine dinucleotide. FAD is a coenzyme involved in numerous biochemical reactions, particularly in energy metabolism. FAD is capable of absorbing light at 340 nm due to its aromatic ring structure, which has a conjugated system of double bonds that allows for absorption in the UV-visible range. NADH, NAD, and NADP are also coenzymes involved in energy metabolism, but they do not absorb light at 340 nm.

The coenzyme flavin adenine dinucleotide (FAD), which is redox-active and associated with a number of different proteins, participates in a number of enzymatic processes that take place during metabolism. A protein with a flavin group attached is referred to as a flavoprotein. This flavin group may take the shape of FAD, or flavin mononucleotide. It is understood that flavoproteins contain -ketoglutarate dehydrogenase, a component of the pyruvate dehydrogenase complex, and components of the succinate dehydrogenase complexes.

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Answer:

See below

Explanation:

The ammeter (or the protective fuse inside)  will get fried.....nearly ideal means it has VERY little resistance....the current flow will almost be a short circuit

Since an ammeter is designed to measure current, it will accurately measure the current flowing through the circuit.

The current flowing through the circuit, which in this instance would be the current supplied by the automobile battery, will be precisely measured by an ammeter because it is intended to detect current.

According on the battery's charge level and the electrical requirements of the linked components, the ammeter would display the value of the current flowing through it, which may range from tens to even hundreds of amperes.

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Answer:

117.88m

Explanation:

We can use the formula [ s = ut + 1/2at^2 ] to solve this problem.

We know that constant acceleration is a = 9/8m/a^2, the initial velocity is 0,  and the height is 87 so the only variable we need to solve for is "t".

87 = 0t + 1/2(9.8)(t^2)

t = √174/9.8

t = 4.21s

Now multiply the time by the speed given.

28m/s * 4.21s = 117.88m

Best of Luck!

Answer:

1 m/s so number 2 is the right one

Explanation:

so when it is at rest it still has some of the left over energy so it would be at 1 m/s

Answer:

a. 60 N*s

b. 60 (kg*m)/s

c. 3 m/s

Explanation:

Givens:

m = 20 kg

v_i = 0 m/s

t = 10 s

F = 6 N

a) Impulse:

I = F*t

I = 6 N*10 s

I = 60 N*s

b) Momentum:

p = v*m

F = m(a)

a = F/m

a = 6 N/20 kg

a = 0.3m/s^2

a = (v_f -v_i)/t

v_f = (0.3 m/s^2)*10 s

v_f = 3.0 m/s

p = 3 m/s*20 kg

p = 60 (kg*m)/s

c. Final velocity

a = (v_f -v_i)/t

v_f = (0.3 m/s^2)*10 s

v_f = 3.0 m/s

The impulse, momentum and final velocity can all be obtained from Newton's second law.

Let us recall that the impulse is obtained as the product of force and time.

Impulse = Force × time

Impulse = 6 N × 10 s = 60 Ns

From Newton's second law of motion;

F.t = mv - mu

Since the object was initially at rest;

F.t = mv

Hence, the final velocity of the object is 60 Kgms-1

The final velocity is obtained from;

F.t = mv

v = F.t/m

v = 6 × 10/20

v = 3 m/s

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To calculate the electric field inside the solid at a distance of 9.50 cm from the center of the cavity, we first need to determine the total charge on the outer surface of the solid sphere using the charge density and the volume of the sphere.

The volume of the sphere can be calculated using the radius:

V = 4/3 * pi * (6.50 cm)^3 = 9042.48 cm^3

The total charge on the outer surface of the solid sphere can be calculated by multiplying the charge density with the volume:

Q = 7.35 x 10-4 c/m3 * 9042.48 cm^3 = 667.07 c

Now that we know the total charge on the outer surface of the solid sphere, we can use the following equation to calculate the electric field inside the solid at a distance of 9.50 cm from the center of the cavity:

E = k * (Q + q) / r^2

where k is the Coulomb constant (8.99 x 10^9 N m^2/C^2), Q is the total charge on the outer surface of the solid sphere, q is the point charge located in the center of the cavity (-3.00 x 10^-6 C), and r is the distance from the center of the cavity (9.50 cm).

Plugging in the known values:

E = 8.99 x 10^9 N m^2/C^2 * (667.07 c + (-3.00 x 10^-6 C)) / (9.50 cm)^2

E = 15.35 n/c

Therefore, the electric field inside the solid at a distance of 9.50 cm from the center of the cavity is 15.35 n/c.

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169 Kcalories are provided by a portion of food that has 25 grams of carbs, 6 grams of protein, and 5 grams of fat.

Kcalories mean kilo-calories. Basically, kilo-calorie or kcal refers to 1,000 calories. To get the Kcalories of food, you have to add the kcal of carbohydrates, protein, and fat.

Get the product by multiplying the number of grams of carbohydrate, protein, and fat by 4,4, and 9, respectively. So if you want to get the energy or Kcal available from a meal, you must then combine the outcomes.

Simply put it, take note of the following conversions:

So here's how to compute the Kcalories of food that contains 25g carbs, 6g protein, and 5g fat.

1.    25g x 4kcal/g = 100kcal

2.    6g x 4kcal/g = 24kcal

3.    5g x 9kcal/g = 45kcal

4.    100kcal + 24kcal + 45kcal = 169kcal!


Therefore, the food contains 169 kilo-calories!

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Answer:

Projectile motion is the motion of an object thrown or projected into the air, subject to only the acceleration of gravity. The object is called a projectile, and its path is called its trajectory. The motion of falling objects, as covered in Problem-Solving Basics for One-Dimensional Kinematics, is a simple one-dimensional type of projectile motion in which there is no horizontal movement. In this section, we consider two-dimensional projectile motion, such as that of a football or other object for which air resistance is negligible.

Explanation:

B the dropped ball

Answer:3.5 seconds

Explanation:

Answer:

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

force = mass × acceleration

From the question we have

force = 10 × 16

We have the final answer as

Hope this helps you

The temperature at which water freezes and the temperature at which ice melts are the same, which is 0 degrees Celsius or 32 degrees Fahrenheit at standard pressure. The correct answer is C.

This is because when water freezes, it changes from a liquid state to a solid state, and when ice melts, it changes from a solid state to a liquid state. Both of these processes involve a change in the temperature of the substance, but they occur at the same temperature point.

Additionally, the boiling point of water can vary depending on the pressure it is under. However, in a pressure cooker, the pressure is increased, which raises the boiling point of water. So, the temperature at which water boils in a pressure cooker is higher than the normal boiling point, but it is still not the same as the temperature at which water freezes or ice melts.

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