The angular quantities: angular displacement, angular velocity, angular acceleration, are defined in a very similar way to the linear quantities. the angular displacement represents the angle through which an object has rotated (the difference between two angular positions). the angular velocity equals the angular displacement divided by the elapsed time. the angular acceleration equals the change in the angular velocity divided by the elapsed time. suppose an object travels through an angular displacement, δθ, of 50.9 rad over a time of 4.10 s. what is the average angular velocity, ω?

Hi there!

We can use the following rotational equivalent kinematic equation to solve:

ω = angular velocity (rad/sec)

θ = angular displacement (rad)

t = time (sec)

Plug in the given values:

answer: 802.3 kilo joules of energy represents 191.75 kilo calorie of energy.

explanation:

energy released during combustion of one mole methane = 802.3 kilo joules

if 1 kilo joule = 0.239006   kilo calorie

then ,802.3 kilo joule will be = 802.30.239006 kilo calorie

802.3 kilo joule = 191.75 kilo calorie

hence, the energy in kilo calorie is 191.75 kilo calorie.

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