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Problem: Four point charges are located at the corners of a square with sides of length a. All the charges are +q,
Write an expression for the resultant force on the positive charge q. Show each step.
A particular satellite was placed in a circular orbit about 158 mi above Earth. (a) Determine the orbital speed of the satellite. m/s (b) Determine the time required for one complete revolution.
What tension in Newtons should a 50cm length of string support in order to whirl an attached 2000g stone in a circular path at 5 m/s.
A 500-Hz sound travels through pure oxygen. Y=The wavelengthof the sound is measured to be 0.65 m. What is the speed of sound in oxygen
When the power is turned off on a turntable spinning at 78 rpm, you find that it takes 10.5 revolutions for it to stop while slowing at a constant rate. What is the angular acceleration of the turntable
question a 2590-kg spacecraft is in a circular orbit 2720 km above the surface of mars.how much work must the
You are examining a flea with a converging lens that has a focal length of 4.40 cm. If the image of the flea is 8.00 times the size of the flea, how far is the flea from the lens
A certain conductor has 6.20 10^28 free electrons per cubic meter, a cross-sectional area of 4.00 10-6 m2, Find the drift speed of the electrons in the conductor
What is the mass in grams of 1L of helium gas as STP? (Find moles and then convert moles to grams; atomic mass =4.0grams/mol), Why do helium balloons float
A Van de Graaff generator has a spherical dome of radius 20 cm. what is the maximum charge that can be held on the dome
Starting from rest a wheel accelerates at a rate of 9.2 rad/s^2 for 5.61 s. Calculate the number of revolutions it makes in this time
Suppose that when you ride on your 8.50 kg bike the weight of you and the bike is supported equally by the two tires. If the gauge pressure in the tires is 65.5 lb/in2 and the area of contact between each tire and road is 7.13 cm2, what is your wei..
A 40-g object connected to a spring with a force constant of 30 N/m oscillates with an amplitude of 8 cm on a frictionless, horizontal surface. Find the total energy of the system
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