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Find the magnetic force on the electron when the earth's field has a horizontal component of 0.250 G and dips 60.0° below the horizontal (values typical in California).
The magnetic field near the surface of a neutron star has a magnitude of 1.00 108 T. Find the acceleration of an electron near the star moving at 1.09 107 m/s if both v and B are in the same plane,
What is the fundamental frequency of the string (in Hz) when a violinist puts her finger down on the string causing the vibrating part of the string to be 0.20 m in length?
If each string is 30.0 cm long, what is the magnitude of the charge on each sphere?
A) how far beyond the point at which you passed the police car ,will the police catch up with you. Assume that the police car continues to drive at constant speed. B) how fast will you be when the p
Two identical hollow cylindrical neodymium iron boron (NdFeB) magnets are placed on a nonmagnetic post so that one is suspended directly above the other.
A fugitive tries to hop on a freight train traveling at a constant speed of 5.0 m/s. Just as an empty box car passes him, the fugitive starts from rest and accelerates at a = 3.5 m/s2 to his maximum
A stone is dropped from the roof of a high building. A second stone is dropped 2.50 s later. How far apart are the stones when the second one has reached a speed of 10.0 m/s?
Why can you calculate the acceleration due to gravity of a free falling body from either its displacement versus time graph or its velocity versus time graph?
(a) How long does it take him to catch up to the empty box car? (b) What is the distance traveled to reach the box car?
512 g of an unknown metal at a temperature of 15 degrees Celsius is dropped into a 100 g aluminum container holding 325 g of water at 98 degrees Celsius. A short time later, the container of water a
Observe the sparks produced when the bare ends of the wires are touched together. Explain the cause of the spark produced when the contact is broken.
A 42 g ice cube at its melting point is dropped into an insulated container of liquid nitrogen. How much nitrogen evaporates if it is at its boiling point of 77 K and has a latent heat of vaporizati
A wheelchair marathoner has a speed of 5 m/s after rolling down a small hill in 1.5 s. If the wheelchair underwent a constant acceleration of 3 m/s2 during the descent, what was the marathoner's sp
For two forces whose magnitude are 400 U and 300 U. find the maximum and minimum magnitudes of their vectors. What directions do the the forces F1 and F2 need to have to provide these magnitudes of
What is the distance of closest approach of the two particles? (Assume that the gold nucleus remains stationary and that it may be treated as a point charge. The atomic number of gold is 79, and an
Suppose after charging a 14.4 µF capacitor to 15 V, you connect it to another already charged capacitor of 7 µF and 9 V. What voltage will your voltmeter read across those two capacitors
Suppose after charging a 3.7 µF capacitor to 6 V, you connect it to the second uncharged capacitor of 12 µF. What voltage will your voltmeter read across the second capacitor after repea
When a force is moved to a point not along its line of action, it can be replaced with:
When calculating the scalar moment magnitude we use the equation M = Fd.
How many coulombs of charge enter a 1.20 length of the axon during this process? (answer in nC)
A car is exiting the 105 freeway at Sepulveda South at a constant speed of 40 miles per hour. The freeway ramp is a long un-banked circular with radius 30 meters. The mass of the car is 1200 kg.
An observer on the train, however, sees the drops fall perfectly vertically. Determine the speed of the raindrops relative to the ground.
A falling stone takes 0.33s to travel past a window 2.2m tall. From what height above the top of the window did the stone fall?
Assume that the conductiApproximately how long should it take 11.9 kg of ice at 0 degrees C to melt when it is placed in a carefully sealed Styrofoam ice chest of dimensions 25cm* 34cm* 57cm whose w