A 0.5 kg metallic ball, starting from point A in the drawing (it is not starting from rest), is projected down the curved runway. Upon leaving the runway at point B,
the ball is traveling straight upward and reaches a height of 4.00 m above the
floor before falling back down. Ignoring friction and air resistance, find the speed
of the ball at point A. *
4.00 m
3.00 m

Which statements about tornadoes are true? check all that apply. (a) about 12,000 tornadoes hit the united states every year. (b) a tornado looks like a funnel. (c) tornadoes are deadly atmospheric storms that cause millions in damages each year. (d) tornadoes can reach wind speeds of more than 300 miles per hour. (e) kansas is the state with the most tornadoes. (f) you will always notice a funnel before a tornado strikes.

Suppose a comet has an orbital period of 309.1 years around the sun. what is it’s average distance from the sun?

During the experiment if you could triple the breakaway magnetic force with all other quantities left unchanged, what is the new value for the critical velocity if it was v0 (initial velocity), initially? (b) now if you halved the radius with all other quantities left unchanged, what is the new critical velocity if it was v0 (initial velocity), initially? (c) if during the experiment, critical velocity quadrupled with all other quantities left unchanged, what is the new breakaway force if its magnitude was initially f0,?