A ball rolls up a slope. At the end of three seconds its velocity is 20 cm/s; at the end of eight seconds its velocity is 0. Wha

The force is calculated by multiplying mass and gravitational acceleration (F= mg). To find the solution, the mass of the elephant (5600 kg) is multiplied by gravity (9.8 m/s²). The result is 55,880 N, representing the upward gravitational force the elephant exerts on the Earth.

Answer:

Explanation:

We start with the fact that

Initially, the spacecraft was at rest, u = 0

The final velocity of the rocket is given as v = 11 m/s

The distance that the rocket covers during acceleration is given as d = 213 m

We seek to determine the acceleration that the occupants of the spacecraft experience during launch, which is derived from the principles of kinematics. By applying the

third motion equation we can find the acceleration.

Thus, the acceleration felt by those inside the spacecraft is .

Answer:

Arrangement A facilitates a greater rate of heat transfer

Explanation:

The rate of heat conduction between two materials differing in temperature adheres to the formula

This equation demonstrates that

• An enlarged equivalent cross-sectional area between the two materials will enhance the rate of heat transfer.
• A reduction in the length of the medium will also amplify the rate of heat transfer

Arrangement A features a shorter transfer medium and a larger equivalent cross-sectional area, since the two rods are set up in a parallel arrangement.

Conversely, Arrangement B has a longer transfer medium and a smaller cross-sectional area, as the two rods are placed end to end