Inclined plane problem

Can somebody please help me with a problem I am trying to do? This is for an algebra based College Physics I course I am taking. 1: A plane is inclined at an angle of 30 deg. w/ respect to the horizon. A block of mass 6.0 kg is placed at the bottom of the plane and given an initial velocity of 3.0 m/sec up the plane. The coefficient of friction between the block and plane is 0.25. a) How far up the plane will the block go? b) Assuming the block slides back down the plane, how fast will it be going when it returns to the bottom? I would really appreciate any help or suggestions for these problems, thank you.

Man on ice

A man of 60 kg mass is stuck on a sheet of ice 10m from solid land. The coefficient of friction between the man and ice is 0.03. He has a 5 kg rock which he can throw with a speed of 12 m/s. a) Can he reach solid land by throwing the rock? b) If so, how long will it take him? I would really appreciate any help or suggestions for these problems, thank you.

Working with the dynamics of circular motion.

A car rounds a turn at 65 km/hr, radius= 225 m. What is the minimum friction coefficient between the tires and the road?

A clock driven by a brass rod pendulum loses time when the rod expands as the temperature rises. Find the error in one day.

A pendulum clock is driven by a brass rod of length Lo= 1.6 meters, pivoted at one end. The pendulum beats perfect time when the temperature is to= 21 degrees Celsius. If the temperature is increased and held at tf= 26 degrees Celsius, find how many seconds error will be introduced in one 24 hour day. The coefficient of expansion for brass is B= .000019 per Celsius degree. (In finding periods, express them to four decimal places.)

A "beat note" is heard when two slightly different frequencies are propagated simultaneously. Such as two guitar strings with slightly different frequencies.

Two sound waves are emitted: y1, with frequency f1, and y2, with frequency f2, with other constants identical, as expressed below. Distances in meters, times in seconds, and angles in radians: (1) y1 = .02 sin(8 Pi x - 108 Pi t) (2) y2= .02 sin (8 Pi x - 100 Pi t) The two waves add to produce the sound perceived by a listener. PART a. Show y, the equation of the sum, y1 + y2, of the two waves. PART b. Find the beat frequency of the combined waves.