Aflat metal washer is heated. as the washer's temperature increases, what happens to the hole in the center? a flat metal washer is heated. as the washer's temperature increases, what happens to the hole in the center? the hole in the center will remain the same size. changes in the hole cannot be determined without know the composition of the metal. the hole in the center of the washer will expand. the hole in the center of the washer will contract.

If an inclined plane is 5 m long and 2 m high, what is its mechanical advantage? a. 2.5 b. 3 c. 7 d. 10

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.

What characteristics of hv2112 make it the best candidate to be classified as a thorne-zytkow object?