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On cm extends above the water level. If you shaved off the 1 cm part, how many centimeters of the remaining ice would extend above water level?
In the deep ocean, a water wave with wavelength 95 {rm m} travels at 12 {rm m}/{rm s}. Suppose a small boat is at the crest of this wave, 1.5 {rm m} above the equilibrium position. What will the ver
Find the electric potential at the empty corner of the three charges are held in place in the figure below, where length x = 0.15 m and height y = 0.10 m
A car is designed to get its energy from a rotating flywheel with a radius of 2.0 m and a mass of 600 kg. Before a trip, the flywheel is attached to an electric motor, which brings the flywheel's ro
Certain neutron stars (extremely dense stars) a believed to be rotating at about 1 rev/s. If such a star has a radius of 16 km, what must be its minimum mass so that material on its surface remains
You decide to make a circular pen, because if you wish to enclose an area using a given length of fencing, then a circular fence encloses a larger area than a fence of any other shape. What is the r
A cannonball launched with an initial velocity of 151 m/s at an angle of 50° follows a parabolic path and hits a balloon at the top of its trajectory. Neglecting air resistance, how fast is it
A wave in the ocean has amplitude of 3 m. Winds pick up suddenly, increasing the wave's amplitude to 6 m. How does this change in amplitude affect the wave's frequency and the amount of energy it t
A non-conducting rod with a uniformly distributed charge +Q. The rod forms a 10/21 of circle with radius R and produces an electric field of magnitude Earc at its center of curvature P. If the arc
A 16.0 kg sled is being pulled across a horizontal surface at a constant velocity. The pulling force has a magnitude of 81.5 N and is directed at an angle of 30.0° above the horizontal. Determi
The glider is pushed in 10.2 cm and released. A student with a stopwatch finds that 12 oscillations take 14.5 s. What is the spring constant?
A 55.0 kg pole vaulter running at 8.0 m/s vaults over the bar. Assuming that the vaulter's horizontal component of velocity over the bar is 1.0 m/s and disregarding air resistance, how high was the
What is the force of air resistance on a 100kg sky-diver who is falling with a constant acceleration of 4m/s/s?
A 1.00 g cork ball with charge 2.00 uC is suspended vertically on a 5.00 m long, light string in the presence of a uniform, downward-directed electric field of magnitude E = 1.00 x 10^5 N/C. If th
For what values x will the sound this person hears be (a) Maximally reinforced, (b) cancelled? Limit your solution to the cases where x is less then or equal to 1.5 m.
A bat flies toward a wall, emitting a steady sound of frequency 2.00kHz . This bat hears its own sound plus the sound reflected by the wall. How fast should the bat fly in order to hear a beat freq
A 340 piano slides 3.8 down a 32 incline and is kept from accelerating by a man who is pushing back on it parallel to the incline (see the figure ). The effective coefficient of kinetic friction is
From a height of 35.0 m, a 1.25 kg bird dives (from rest) into a small fish tank containing 50.0 kg of water. What is the maximum rise in temperature of the water.
A charge -342e is uniformly distributed along a circular arc of radius 4.10 cm, which subtends an angle of 68o. What is the linear charge density along the arc?
A spring is hung from the ceiling. A 0.550 kg block is then attached to the free end of the spring. When released from rest, the block drops 0.130 m before momentarily coming to rest.
An Electron gun emits a beam of 12.0 kev electrons toward the screen. How far horizontally is the deflected by the Earth's magnetic field if the electron gun is 20cm from the screen.
A ball rolls horizontally off the edge of a tabletop that is 0.72 m high. It strikes the floor 2.80 m away from the edge of the table. What is the initial (horizontal) velocity of the ball? Ignore
Heat capacity of copper is .092 calories per gram per degree Celsius. Show that the amount of heat needed to raise the temp of a 10-gram piece of copper from 0 degree Celsius to 100 degree Celsius i
An electric dipole is formed from pm 1.0;{rm nC} charges spaced 3.00 mm apart. The dipole is at the origin, oriented along the y-axis. What is the electric field strength at the points