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4 years ago

Which of the following situations would produce and average velocity of zero

Physics

1 answer:

enyata [817]4 years ago

3 0

There are no situations listed. Try adda picture or more text for your question to be answered.

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Which of the following is the correct definition of mechanical energy?

mestny [16]

c. energy and object has.....

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3 years ago

Read 2 more answers

An astronaut goes out for a space-walk at a distance above the earth equal to the radius of the earth. What is her acceleration

Lera25 [3.4K]

Answer: $\frac{g}{4}$

Explanation:

Let m be the mass of Astronaut

M=mass of earth

G=Gravitational constant

R=radius of Earth

Force Exerted by Earth on Astronaut

$F=\frac{GmM}{R^2}$

acceleration due to gravity is $=\frac{F}{m}=g$

$g=\frac{GM}{R^2}$

When it is at $r=2R$

$g'=\frac{GM}{(2R)^2}$

$g'=\frac{GM}{4R^2}=\frac{g}{4}$

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3 years ago

Which of the following is most closely related to an activated complex?

Anon25 [30]

Among the choices above, the one that is most closely related to an activated complex is the transition state. The answer is letter D. This formation forms quickly and does not stay in a way compound is. It usually forms during the enzyme – substrate reaction.

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3 years ago

1. What is the acceleration of a point on the edge of a 0.30 m diameter grinding wheel rotating at 1600 rpm?

anygoal [31]

Complete Question

1. What is the linear speed of a point on the edge of a 0.30 m diameter grinding wheel rotating at 1600 rpm?

2. What is the acceleration of the point?

Answer:

$v = 25.14 \ m/s$

$a = 4013.5 \ m/s^2$

Explanation:

From the question we are told that

The diameter is $d = 0.30 \ m$

The angular speed is $w = 1600 \ rpm = \frac{ 1600 * 2 * \pi }{60 } = 167.6 \ rad /s$

Generally the is mathematically represented as

$r = \frac{d}{2} = \frac{0.30}{2 } = 0.15 \ m$

Generally the linear speed is mathematically represented as

$v = wr$

$v = 167.6 * 0.15$

$v = 25.14 \ m/s$

Generally the acceleration is mathematically represented as

$a = \frac{v^2 }{r}$

$a = \frac{25.14^2}{0.15}$

$a = 4013.5 \ m/s^2$

8 0

3 years ago

Please help me with my physics! Provide work please. <br><br> Question #5

Murljashka [212]

#4 is correct.
For #5, don't get all tangled up. Just close your eyes, breathe deeply, and murmur "F equals M A. Force equals mass times acceleration."

The force is 15N. The mass is 12kg. You really shouldn't have any trouble calculating the acceleration.

6 0

4 years ago