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Four objects having varied masses are initially at rest at different heights above the ground. The masses and starting heights
are given in the table.
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Object Mass (kg)
A 0.125 1
B 0.689
C 0.752
D 0.562
Height (m)
A 25.0
B 10.3
C 21.9
D 27.1
Each mass is allowed to fall to the ground, and air resistance is negligible. Rank the kinetic energy and speed with which
each object hits the ground from highest to lowest.

The specific heat of silver is 0.057 calories/gram°c. if 10.0 grams of silver were heated and the temperature of the sample changed by 20.0°c, how many calories of heat energy were absorbed by the sample?

What is the magnification of a real image if the image is 10.0 cm from a mirror and the object is 50.0 cm from the mirror ? use the equation m=-di/do. a. -5.0 b. 5.0 c. 0.20 d. -0.20

Astone is thrown with a speed v0 and returns to earth, as the drawing shows. ignore friction and air resistance, and consider the initial and final locations of the stone. which one of the following correctly describes the change δpe in the gravitational potential energy and the change δke in the kinetic energy of the stone as it moves from its initial to its final location? options a.δpe = 0 j and δke = 0 j b.δpe is positive and δke is negative c.δpe = 0 j and δke is positive d.δpe is negative and δke is positive e.δpe = 0 j and δke is negative