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 coef ...continues

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 su ...continues

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 coefficie ...continues

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 ...continues

Projectile motion : Bomb dropped from an aeroplane

An aeroplane moving horizontally at a speed of 200m/s and at a height of 8.0 x 10^3 is to drop a bomb on a target. At what horizontal distance from the target should the bomb be released ?

Lorry descending a hill: Force applied by the brakes

A lorry travelling on the level road at 40 km/h can be stopped by its brakes in a distance 16 m. Find the speed from which it can be brought to rest in the same distance when descending a hill whose angle of slope is Sin^-1 [1/15]

Finding the frequency of vibration of a stretched wire.

A wire of density 9gm/cm^3 is stretched between two clamps 100cm apart subjected to an extension of 0.05 cm. What is the lowest frequency of transverse vibrations in the wire, assuming the Young's modulus to be 9x10^11 dynes/cm^ ?

Geometrical Optics (Forming images with a plane mirror)

You are 1.8 m tall and stand 3.0 m from a plane mirror that extends vertically upward from the floor. On the floor 1.5 m in front of the mirror is a small table, 0.80 m high. What is the minimum height the mirror must have for you to be able to see the top of the table in the mirror? Please include what law is used to solve.

From the graph of a traveling wave on a wire, at x1 known, obtain information required to write the wave equation y(x,t), and find the time intercepts.

As shown in ATTACHMENT #1, a wave is traveling toward +x on a wire. The motion of a point at x1= .45 m is shown. From the diagram, initial value of y is .12 meters and is increasing so initial slope is positive. The amplitude is .20 m, and the period is .5 sec. From this information, develop the equation y(x,t) of the wave, th ...continues