How much heat does it take to raise the temperature of 7.0kg of water from 25C to 46C? The specific heat of water is 4.18kj. A. 148kJ
B. 320kJ
C. 610kJ
D. 176kJ

Explain why the aperture of the spherical mirror should be small compared to the radius of curvature of the mirror.

An object is dropped from a tower, 400 ft above the ground. the object's height above ground t seconds after the fall is s(t)equals400 minus 16 t squared. determine the velocity and acceleration of the object the moment it reaches the ground. the velocity of the object the moment it reaches the ground is nothing ft/s.

During a medieval siege of a castle, the attacking army uses a trebuchet to hurl heavy stones at the castle walls. if the trebuchet launches the stones with a velocity of at an angle of 50.0°, (a) how long does it take the stone to hit the ground? (b) what is the maximum distance that the trebuchet can be from the castle wall to be in range? (c) how high will the stones go? show all your work.