A planetesimal about to collide with a protoplanet has kinetic energy. during the collision, this energy is converted to

Answer:

Force = 2802.8 Newton

Explanation:

Given the following data;

Mass = 130 lbs

But, 2.2 lbs = 1.0 kg

130 lbs to kg = 130 * 2.2 = 286 kg

Acceleration due to gravity = 9.8m/s²

To find the force in Newton;

Force = mass * acceleration due to gravity

Force = 286 * 9.8

Force = 2802.8 Newton

Answer: B. Vector rules

Explanation:

To solve this we must be knowing each and every concept related to velocity. Therefore, the correct option is option B among all the given options.

Velocity refers to a vector assessment of an object's rate of motion and direction of motion. As a result, in order to calculate velocity using this definition, we must be familiar with both magnitude and direction.

It determines how quickly or slowly something moves. Consider the following scenario: two moving objects. If both items are going in the same direction, it is simple to determine which one is moving faster. However, judging which item is quicker is difficult when they are traveling in different directions.  Vector rules is used for combining velocities.

Therefore, the correct option is option B among all the given options. Vector rules is used for combining velocities.

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Answer:

3.42 + 4 + 5.2 + 12= 24.62
So since we have 24.62 it will be 4 sig figs

Explanation:

By Newton's second law, the net force on the car is

∑ F = m a

where m is the mass of the car and a is magnitude of the acceleration.

The car is slowing down, so the net force opposes the direction in which the car is moving. Vertically, the car is in equilibrium, the net force is entirely due to friction. Taking the direction opposite the car's motion to be negative, we have

- 200 N = (200 kg) (-a)

a = (200 kg) / (200 N)

a = 1 m/s²

If you're also supposed to find the coefficient of kinetic friction, use the fact that the car the vertical forces cancel out, namely

n + (-w) = 0

where n is the magnitude of the normal force and w is the car's weight. The friction force f is proportional to the normal force n by a factor of µ, the coefficient of kinetic friction, such that f = µ n. Then

f / µ = w

(200 N) / µ = (200 kg) (9.80 m/s²)

µ = (200 N) / ((200 kg) (9.80 m/s²))

µ ≈ 0.102

      Maybe this graph can help?

Answer:

Energy

Explanation:

The relative velocity of the first stone concerning the second stone is 20 m/s.

The time interval at which two stones are dropped from the tower is t.

t = 2 seconds

Let the initial velocity of the first stone be u1.

Let the initial velocity of the second stone be u2.

Let the final velocity of the first stone be v1.

Let the final velocity of the second stone be v2.

The velocity of the first stone is,

\(v _{1} = u _{1} + at\)

\(v _{1} = 0 + gt\)

\(v _{1} = gt\)

The velocity of the second stone is,

\(v _{2} = g(t - 2)\)

The relative velocity of the first stone concerning the second stone is,

\(v = v _{1} - v _{2}\)

= g - g ( t - 2)

= gt -gt - 2g

= 2 × g

= 2 × 10

= 20 m/s

Therefore, the relative velocity of the first stone concerning the second stone is 20 m/s.

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Another way to keep food warm till you arrive at the hospital is by putting the food in a foil and wrapping it up with a towel to retain the heat.

Food preservation is defined as the process by which a cooked food or process food is kept in such a way that microorganisms cannot affect their taste and texture.

To prevent a cooked food from getting cold, you can put the food in an aluminium foil and wrap it with a towel to prevent heat loss.

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As a result, the arrows in the free-body diagram that indicate the forces operating on the object will be balanced, equal in magnitude, and pointing in the opposite direction.

Arrows used in free body diagrams to depict the various forces acting on an item. Force is a vector, as was previously stated. As a result, every force on a free body diagram has a value and a direction.

Newton's rule states that if the net force acting on an object is not zero, then the object's acceleration will also not be zero. Therefore, we will analyse the total force using the free body diagram.

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The final correct answer is D. A & B only

The reasons for studying Kinematic Analysis are A. To improve performance, B. Safety, efficiency, and effectiveness of movement, and C. Exercise Prescription. However, the correct answer to this question is D. A & B only.

This is because Kinematic Analysis is primarily focused on improving performance and ensuring safety, efficiency, and effectiveness of movement. While exercise prescription is an important aspect of fitness and health, it is not directly related to Kinematic Analysis.

Therefore, the correct answer is D. A & B only.

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Answer:

Explanation:

SI units are interrelated in such a way that one unit is derived from other units without conversion factors. ... SI is used in most places around the world, so our use of it allows scientists from disparate regions to use a single standard in communicating scientific data without vocabulary confusion.

Answer:

July

Explanation:

In july you would expect least hurricane

Answer:

Option (b) he is moving with a constant speed (on average)

Explanation:

To know which option is correct, let us calculate the speed at each time.

Case 1:

Distance = 10 yard

Time = 1 s

Speed =?

Speed = distance / time

Speed = 10 / 1

Speed = 10 yard/s

Case 2:

Distance = 20 yard

Time = 2 s

Speed =?

Speed = distance / time

Speed = 20 / 2

Speed = 10 yard/s

Case 3:

Distance = 30 yard

Time = 3 s

Speed =?

Speed = distance / time

Speed = 30 / 3

Speed = 10 yard/s

Case 4:

Distance = 40 yard

Time = 4 s

Speed =?

Speed = distance / time

Speed = 40 / 4

Speed = 10 yard/s

From the calculations made above, we can see clearly that the speed at each case is the same i.e constant. This is true because he is covering the same distance with respect to time.

This also means that the footballer is not accelerating as his speed remains the same i.e constant.

Thus, option B gives the correct answer to the question.

Answer:

because the density of iron nail is more tha n density of water but the density of ship made iron steel is less than the density of water

Answer:

19500kg

Explanation:

If you divide 195000N by 10

This is because simple harmonic motion is characterized by the oscillation of an object back and forth around a central equilibrium position. The object's displacement refers to its distance from this equilibrium position.

When the object reaches its maximum displacement, it is farthest away from the equilibrium position in one direction. At this point, it is also at a maximum. This maximum value could refer to various parameters depending on the context of the question.

For example, if the question is asking about the object's maximum velocity, then when the object is at its maximum displacement, it will also have the maximum velocity. This occurs because as the object moves away from the equilibrium position, the restoring force becomes stronger, accelerating the object and increasing its velocity. As the object passes through the equilibrium position, its velocity decreases until it reaches zero at the maximum displacement.

Similarly, if the question is referring to the object's maximum potential energy or maximum kinetic energy, the object will also be at these maximums when it is at its maximum displacement.

When an object in simple harmonic motion is at its maximum displacement, it is also at a maximum in terms of velocity, potential energy, or kinetic energy, depending on the specific context of the question. This relationship holds true due to the nature of simple harmonic motion and the interplay between displacement, velocity, and energy in such systems.

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Answer:

When displacement vectors are added, the result is a resultant displacement. But any two vectors can be added as long as they are the same vector quantity. If two or more velocity vectors are added, then the result is a resultant velocity. If two or more force vectors are added, then the result is a resultant force.

The energy that falls on a 0.650 cm diameter eardrum during an 8 hour exposure to a sound level of 0.003 w/\(m^{2}\) is 2.871 × 10^-6 joules.

The energy that falls on a 0.650 cm diameter eardrum during an 8 hour exposure to a sound level of 0.003 w/\(m^{2}\) can be calculated by using the formula: E = P × A × t, where E is the energy in joules, P is the power in watts per square meter, A is the area of the eardrum in square meters, and t is the time in seconds.

First, we need to convert the diameter of the eardrum from centimeters to meters:
0.650 cm = 0.00650 m

Next, we need to calculate the area of the eardrum using the formula for the area of a circle: A = π × r^2, where r is the radius of the circle:
A = π × (0.00650 m / 2)^2 = 3.14159 × (0.00325 m)^2 = 3.14159 × 0.00001056 \(m^{2}\) = 0.00003318 \(m^{2}\)

Then, we need to convert the time from hours to seconds:
8 hours = 8 × 60 × 60 = 28800 seconds

Finally, we can plug in the values into the formula for energy and solve for E:
E = P × A × t = 0.003 w/\(m^{2}\) × 0.00003318 \(m^{2}\) × 28800 s = 2.871 × 10^-6 J

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The maximum possible orbital angular momentum of the hydrogen atom in its fourth excited state after emitting a photon with a wavelength of 1282 nm is equal to 2h/π.

The maximum possible orbital angular momentum of a hydrogen atom in its fourth excited state can be determined using the formula L = nħ, where L represents the orbital angular momentum, n is the principal quantum number, and ħ is the reduced Planck's constant.

In this case, the atom is in its fourth excited state, which corresponds to n = 4. Therefore, we can calculate the orbital angular momentum by multiplying the principal quantum number by the reduced Planck's constant (h/2π):

L = 4ħ

To express the answer as a multiple of h, we can substitute the value of ħ with its equivalent form: ħ = h/2π.

L = 4(h/2π)

Simplifying the expression, we find:

L = 2h/π

Hence, the maximum possible orbital angular momentum of the hydrogen atom in its fourth excited state after emitting a photon with a wavelength of 1282 nm is equal to 2h/π.

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Explanation: (I think)

Plug your values into the momentum equation.

So m1= 63kg

m2 = 10 kg

V1 = 12 m/s

And then plug in your values and solve for your unknown (v2)

The final intensity of unpolarized light after passing through three polarizing filters is 12.5% of the original intensity.

This can be calculated using Malus' law, which states that the intensity of polarized light passing through a polarizing filter is proportional to the square of the cosine of the angle between the polarization axes of the filter and the incident light.

Therefore, the final intensity is 1/8 or 12.5% of the original intensity.

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The term used to describe how easily something stretches is known as "elasticity." It refers to the ability of a material to deform under stress and return to its original shape when the stress is removed.

Elasticity is a fundamental property of materials that determines their response to applied forces. It measures the degree to which a material can stretch or deform when subjected to an external force and then regain its original shape when the force is removed. This property is essential in various fields, including engineering, physics, and materials science.

When a material is subjected to stress, such as tension or compression, its atoms or molecules experience internal forces that cause them to rearrange and deform. The ease with which this deformation occurs is a measure of the material's elasticity. Materials that can be easily stretched or compressed and quickly return to their original shape are considered highly elastic. In contrast, materials that undergo significant permanent deformation or fail to return to their original shape are considered less elastic.

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The inside radius of the coffee mug is approximately 3.31 cm.

To find the inside radius of the coffee mug, you can follow these steps:

1. Determine the volume of the coffee: Since the density of coffee is the same as water, we can use the density of water (1 g/cm³) and the mass of coffee (310 g) to find the volume using the formula: volume = mass/density, which gives us 310 cm³.

2. Calculate the volume of a cylinder: The coffee mug can be treated as a cylinder with height (depth) of 5.00 cm. The formula for the volume of  cylinder is V = πr²h, where V is the volume, r is the radius, and h is the height.

3. Solve for the radius: Substitute the volume (310 cm³) and height (5.00 cm) into the formula and solve for r: 310 = πr²(5.00). Divide both sides by (5π) to get r² ≈ 19.79. Finally, take the square root of 19.79 to find r ≈ 3.31 cm.

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Answer:C

Explanation:

The sun heats land quickly and as the warm air rises, cool air comes in to take it place.

Answer:

C

Explanation:

Answer:Hetero

Explanation: Honestly, same as the last guy said

1500 j is extracted from the cold reservoir when 900 j of work are done on system .

We only need to think about total energy transmitted in terms of work and heat to find a solution to this issue. Essentially, the first law of thermodynamics conjugates this.

Evaluation :

The total work performed in the heat engine is if we consider the heat taken as positive and the heat released as negative.

\(W_{1}\) = 2500 - 1000

\(W_{1}\) = 1500 j

For the case of the engine pumps the Energy absorbed is

\(W_{2}\) = 1500 j

In this way the ratio between the two would be

Ratio  \(W_{1} /W_{2}\) = 1

So it is reversible, because the state of efficiency of the body is totally efficient.

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Room temperature is typically defined as the range of temperatures at which most people feel comfortable and which is commonly found in indoor settings.

Room temperature can vary depending on the specific context, but it is generally considered to be between 20 and 25 degrees Celsius (68 and 77 degrees Fahrenheit).To convert from Celsius to Fahrenheit, you can use the following formula: °F = (°C x 1.8) + 32

Therefore, the range of room temperature in Celsius is approximately 20 to 25 degrees Celsius, and this converts to approximately 68 to 77 degrees Fahrenheit.

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Answer:

Its speed would be increasing.

Explanation: