We can substitute the given values into the equation for T, given the surrounding temperature T0 = 0, initial temperature T1 = 140, constant k = -0.0815, and time t = 15 minutes.
T = 0 + (140 - 0)e^(-0.0815*15) = 140e^(-1.2225) = 41.23°F
As we know that total work done by a force is given by


so it is product of force and displacement along same direction
as we can write it as

so it must be the product of force and displacement in same directions so correct answer must be
<u>B. in the same direction as the displacement vector and the motion.</u>
Wavelength- <span>distance between successive crests of a wave.
frequency- t</span><span>he rate at which something occurs or is repeated over time.
amplitude-</span><span> maximum extent of a vibration.</span>
Answer:

Explanation:
Since the pulley has a mass concentrated on its rim, the pulley can be considered as a ring.
The moment of inertia of a ring is

The mass on the left is heavier, that is the pulley is rotating counterclockwise.
By Newton's Second Law, the net torque is equal to moment of inertia times angular acceleration.

Here, the net torque is the sum of the weight on the left and the weight on the right.

Applying Newton's Second Law gives the angular acceleration

The relation between angular acceleration and linear acceleration is

Then, the linear acceleration of the masses is
