????The Earth is made of mostly_______. Mountains Water Land Carbon

Human centrifuges are used to train military pilots and astronauts in preparation for high-g maneuvers. A trained, fit person we

jeka57 [31]

(a) $4.14 rad/s^2$

The relationship beween centripetal acceleration and angular speed is

$a=\omega^2 r$

where

$\omega$ is the angular speed

r is the radius of the circular path

Here we gave

$a = 9g = 88.2 m/s^2$ is the centripetal acceleration

r = 5.15 m is the radius

Solving for $\omega$ , we find:

$\omega = \sqrt{\frac{a}{r}}=\sqrt{\frac{88.2 m/s^2}{5.15 m}}=4.14 rad/s^2$

(b) 21.3 m/s

The relationship between the linear speed and the angular speed is

$v=\omega r$

where

v is the linear speed

$\omega$ is the angular speed

r is the radius of the circular path

In this problem we have

$\omega=4.14 rad/s$

r = 5.15 m

Solving the equation for v, we find

$v=(4.14 rad/s)(5.15 m)=21.3 m/s$

7 0

3 years ago

Read 2 more answers

What is the average salary for the following careers?

Dennis_Churaev [7]

1. $85047
2. $113,080
3. $ 75,820
4. $41595

6 0

3 years ago

Read 2 more answers

An object has 100 J of kinetic energy and a mass of 2 g. How fast was it traveling?

iragen [17]

K.E = 1/2 mv²

100 = 1/2 (2 )(v)²

100 = both 2 cancel (v)²

Taking Square root on b/s

√100 = √v²

10 = v

7 0

4 years ago

Which of the following did Christian Doppler explain? A. Atmospheric changes that affect climate B. The transfer of electricity

sergejj [24]

C is the best answer

4 0

3 years ago

Read 2 more answers

consider the free-body diagram. if you want the box to move, the force applied while dragging must be greater than the

NeTakaya

Answer:

Force of static friction between the two surfaces

Explanation:

When two surfaces come into contact, they exert a force that resist the sliding of the two surfaces. This force is called static friction.

This force is given by the relation

$F_{s}=\mu_{s}\eta$

Where,

μ - coefficient of static friction

η - normal force acting on the body

When a force acts on a body placed on a rough surface, it doesn't do any work if the applied force was less than the force of static friction.

So, in order to move the body, the applied force should be greater than the force of static friction.

6 0

3 years ago