Acentrifuge in a medical laboratory rotates at an angular speed of 3500 rev/min. when switched off, it rotates 46.0 times before coming to rest. find the constant angular acceleration of the centrifuge.

The angular acceleration of the centrifuge is -231.74 rad/s².

Explanation:

Given that,

Angular speed = 3500 rev/min = 366 rad/s

We need to calculate the angular displacement

Using formula of angular displacement

Put the value into the formula

We need to calculate the angular acceleration

Using equation of motion

Hence, The angular acceleration of the centrifuge is -231.74 rad/s².

the first, second, and fifth options

when a device is used in a circuit in which the voltage is 81 v, the current flowing through the device is 3 a. what is the resistance of the device?

a. 27 ω

b. 40.5 a

c. 243 ω

d. 243 a

the correct answer is a. 27