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natita [175]
3 years ago
10

At the surface of a certain planet, the gravitational acceleration g has a magnitude of 20.0 m/s^2. A 22.0-kg brass ball is tran

sported to this planet.
What is (a) the mass of the brass ball on the Earth and on the planet, and (b) the weight of the brass ball on the Earth and on the planet?
Physics
1 answer:
Oliga [24]3 years ago
3 0

Answer:

a, 22 kg and 22 kg

b, 215.8 N and 440 N

Explanation:

a

The mass of the ball remains constant and unchanged irrespective of where it has been to, need to go or is going. So, basically the mass of the ball on earth is as the same mass of the ball on the said planet, 22 kg

b

The weight of any object factors in the acceleration due to gravity of the said area(or planet).

W = mg, with m being the mass and g being the acceleration due to gravity.

On earth

W = 22 * 9.81 = 215.8 N

On the said planet,

W = 22 * 20 = 440 N

Do therefore, the weight is 215.8 N on earth and 440 N on the planet

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Consider a block on frictionless ice. Starting from rest, the block travels a distance din
sweet [91]

Answer:

<em>The distance is now 4d</em>

Explanation:

<u>Mechanical Force</u>

According to the second Newton's law, the net force exerted by an external agent on an object of mass m is:

F = m.a

Where a is the acceleration of the object.

The acceleration can be calculated by solving for a:

\displaystyle a=\frac{F}{m}

Once we know the acceleration, we can calculate the distance traveled by the block as follows:

\displaystyle d = vo.t+\frac{at^2}{2}

If the block starts from rest, vo=0:

\displaystyle d = \frac{at^2}{2}

Substituting the value of the acceleration:

\displaystyle d = \frac{\frac{F}{m}t^2}{2}

Simplifying:

\displaystyle d = \frac{Ft^2}{2m}

When a force F'=4F is applied and assuming the mass is the same, the new acceleration is:

\displaystyle a'=\frac{4F}{m}

And the distance is now:

\displaystyle d' = \frac{4Ft^2}{2m}

Dividing d'/d:

\displaystyle \frac{d' }{d}=\frac{\frac{4Ft^2}{2m}}{\frac{Ft^2}{2m}}

Simplifying:

\displaystyle \frac{d' }{d}=4

Thus:

d' = 4d

The distance is now 4d

3 0
2 years ago
Which of the outer planets would you most likely visit? Why? What would you see on your visit?
Tanzania [10]
I would like to visit Pluto because i want to see what a Dwarf planet would look like, i would like to see what kind of minerals are in the planet its self..


Brainliest answer?

6 0
3 years ago
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You are cycling along a flat road.<br> What is the force that is pulling you downwards?
Debora [2.8K]

Answer:Gravity

Explanation:Gravity is the force that pulls everything down instead of up because if we didn’t have gravity we would be floating upwards

7 0
3 years ago
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A paperboy rode his bike 3m/s. After being chased by a dog for 8 seconds he was traveling 6m/s. What is his accleration
aev [14]
I believe the answer is 0.375 m/s²
8 0
3 years ago
What expression (formula) relates Kenetic energy of an object of mass to its momentum
zmey [24]

Answer:

Correct answer:  Ek = I² / 2 · m

Explanation:

The formula by which kinetic energy is calculated is:

Ek = m V² / 2

The formula by which momentum i prefer the name impulse is calculated is:

I = m V

We will transform the formula for kinetic energy on the next way:

Ek = m V² / 2  we will multiply numerator and denominator with m and get:

Ek = m² V² / 2 m = (m v)² / 2 m = I² / 2 m

Ek = I² / 2 m

God is with you!!!

3 0
3 years ago
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