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What is the force of repulsion between two identical charges each of -5.00 x 10-5 C when separated by a distance of 0.65 m?
What is the magnitude of the electric field produced by this new charge distribution at point P, a distance r = 29.50 from the center of the original sphere.
An electron is initially at rest just outside a large copper surface that has a charge density of 1.01 x 10-6 C/m2. How far has the electron moved in 1.11 10-9 s if the field is uniform over this regi
At the familab accelerator in batavia, illinois, protons having momentum 5.00x 10^-16 kg.m/s are held in a circular orbit of radius 1.1km by an upword magnetic field. What is the magnitude of this f
A tube, open at only one end, is cut into two shorter (nonequal) lengths. The piece that is open at both ends has a fundamental frequency of 428 Hz, while the piece open only at one end has a fundam
The electric potential energy stored in the capacitor of a defibrillator is 83 J, and the capacitance is 124 µF. What is the potential difference that exists across the capacitor plates?
What mass (in grams) of steam at 100°C must be mixed with 146 g of ice at its melting point, in a thermally insulated container, to produce liquid water at 25.0°C? The specific heat of water
An automoble speedometer has a range of 0 to 100 mph. The uncertainty in any reading is 2 % of the maximum speed. (a) What is the absolute uncertainty at 100 mph?
You can use the radio waves generated by a hydrogen maser as a standard of frequency. The frequency of these waves is 1,420,405,751.786 Hertz.
Assume that an x axis points horizontally away from the cliff edge and a y axis extends upward. Immediately after Tarzan steps off the cliff, the tension in the vine is 757 N. Just then, (a)
An axon is the relatively long tail-like part of a neuron, or nerve cell. The outer surface of the axon membrane (dielectric constant = 5, thickness = 1.00 x 10-8 m) is charged positively, and the i
What frequency does your friend hear if you suddenly start singing at 400Hz?
A point charge of -6 µC is located at x = 1 m, y = -2 m. A second point charge of 12 µC is located at x = 1 m, y = 3 m. (a) Find the magnitude and direction of the electric field at x = -1
A blow-dryer and a vacuum cleaner each operate with a voltage of 120 V. The current rating of the blow-dryer is 10 A, and that of the vacuum cleaner is 4.0 A. (a) Determine the power consumed by the
A kid fires water horizontally from a squirt gun held 1.4 above the ground. It hits another kid 2.3 away square in the back, at a point 0.85 above the ground. What was the initial speed of the water
An electric dipole consists of charges +2e and -2e separated by 0.65 nm. It is in an electric field of strength 3.10 x 106 N/C. Calculate the magnitude of the torque on the dipole when the dipole mome
If the initial velocity of the ball is horizontal, what minimum magnitude must it have if the ball is to clear the net?
If the torque required to loosen a nut that is holding a flat tire in place on a car has a magnitude of 43.0 N·m, what minimum force must be exerted by the mechanic at the end of a 32.0 cm lu
A disk is rotating about its central axis like a merry-go-round. The angular position delta(t) of a reference line one the disk is given by delta(t)=-3.4 + 2.3t - .43t^2 with t in seconds, delta in
Calculate the magnitude of the electric field for a conducting sphere at a point 3.20 cm away from the center of the sphere.
An attacker at the base of a castle wall 3.70 m high throws a rock straight up with a speed 8.30 m/s from a height of 1.68 m above the ground. a) Will the rock reach the top of the wall?
Calculate (a) the average velocity (in cm/s) during the time interval t = 2.00 s to t = 3.00 s; (b) the instantaneous velocity at t = 2.00 s; (c) the instantaneous velocity at t = 3.00 s; (d) the in
Andy (mass 80 Kg) uses a 3.0 m long rope to pull Bob ( mass 60 kg) across the floor (µk=0.20) at a constant speed of 1.0 m/s. Bob signals Andy to stop by "plucking" the rope, sending a wave pu
Find the maximum height (y max) reached by the rocket. Ignore air resistance and assume a constant acceleration due to gravity equal to 9.80m/s^2
Determine, the potential along the x axis at x = 0.769 m between wire and sheet.