An object's heat capacity is defined to be
a. the amount of heat energy needed to raise its temperature by 1°c
b. the ratio of its specific heat to that of water
c. its ability to quickly heat up and glow red-hot
d. the amount of heat energy per kilogram needed to raise its temperature by 1°c
e. the change in its temperature caused by adding 1 j of heat
f. the amount of heat energy needed to change its state without changing its temperature

According to newtons universal law of gravitation, which would change the parh of the ball so it traces out widest curved path possible?

What do you think car designers do if the damage caused by a crash test is too severe?

Astudent throws a water balloon with speed v0 from a height h = 1.76 m at an angle θ = 21° above the horizontal toward a target on the ground. the target is located a horizontal distance d = 9.5 m from the student’s feet. assume that the balloon moves without air resistance. use a cartesian coordinate system with the origin at the balloon's initial position. (a) what is the position vector, rtarge t, that originates from the balloon's original position and terminates at the target? put this in terms of h and d, and represent it as a vector using i and j. (b) in terms of the variables in the problem, determine the time, t, after the launch it takes the balloon to reach the target. your answer should not include h. (c) create an expression for the balloon's vertical position as a function of time, y(t), in terms of t, vo, g, and θ. (d) determine the magnitude of the balloon's initial velocity, v0, in meters per second, by eliminating t from the previous two expressions.