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Ierofanga [76]
3 years ago
5

If an object's velocity changes from 25 meters per second to

Physics
2 answers:
damaskus [11]3 years ago
3 0

Answer:

B

Explanation:

the way to get b you have divion each other

11Alexandr11 [23.1K]3 years ago
3 0

Answer:

A

Explanation:

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If the volume is held constant, what happens to the pressure of a gas as temperature is decreased? Explain.
Lady bird [3.3K]

Answer:Decreases

Explanation:

Given

Volume is held constant that is it is a isochoric process.

We know that

PV=nRT

as n,V& R are constant therefore only variables are

P & T

so \frac{P_1}{T_1}=\frac{P_2}{T_2}

\frac{P_1}{P_2}=\frac{T_1}{T_2}

As T_1 is decreasing therefore Pressure must also decrease so that ratio remains constant.

6 0
3 years ago
How long would it take a machine to do 5000 J of work if the power rating of the machine is 100 watts?
NeX [460]

Answer:

25 N; 250 W.

Explanation: Work Done

=

Force

×

Displacement

×

cos

(

The angle between Force and Displacement

)

So, Let's Assume the Force to be

x

Newtons.

So, According to The Sum,

×

x

x

⋅

100

=

2500

⇒

x

=

25

00

1

00

=

25

So, The force was

25

N

.

And, We also know,

Power

=

Work Done

Time

So,

The Power of the Machine =

2500

10

Watts

=

250

Watts

4 0
3 years ago
Please help with this physics question
mr_godi [17]

The correct answer is A continúe moving with constant velocity

5 0
3 years ago
If all objects that have mass also have gravity, why doesn't your pencil get pulled towards you while it sits on your desk?
Lemur [1.5K]

Answer:

The pencil is not pulled towards a person due to a very small magnitude of force between them, due to lighter masses.

Explanation:

Let us apply Newton's Law of Gravitation between a person and pencil.

Average Mass of a Normal Pencil = m₁ = 10 g = 0.01 kg

Average Mass of a Person = m₂ = 80 kg

Distance between both = r = 1 cm = 0.01 m (Taking minimal distance)

Gravitational Constant = G = 6.67 x 10⁻¹¹ N.m²/kg²

So,

F = Gm₁m₂/r²

F = (6.67 x 10⁻¹¹ N.m²/kg²)(0.01 kg)(80 kg)/(0.01 m)²

<u>F = 5.34 x 10⁻⁷ N</u>

This Force is very small in magnitude due to the light masses of both objects.

<u>Therefore, the pencil is not pulled towards a person due to a very small magnitude of force between them, due to lighter masses.</u>

5 0
3 years ago
Which of the following factors can negatively affect development?
PtichkaEL [24]
The answer would be D. It's D because if there was corruption and instability, how will we fund the project? If there was lack of resources, how will the house be completed? If there was a lack of education, how will buildings be able to be engineered?

8 0
4 years ago
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