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one end of a boat having mass 32 kg touches the shore(the boat perpendicular to shore) a 4kg dog initially stands on the other end of the boat. the length of the boat is 5m. when the dog walks toward the shore and reaches to the end of the boat, find how far the dog is then from the shore? assume no friction between the boat and the water.
The helium-neon lasers most commonly used in student physics laboratories have average power outputs of 0.250 mW. compute the peak magnetic field strength
Two 5000 kg passenger cars roll without friction (one at 1 m/s, the other at 2 m/s) toward one another on a level track. They collide, couple, and roll away together with the combined momentum.
Assume that plane continues to fly with the similar velocity
A negative charge of -2.0 multiplied by 10-4 C and a positive charge of 9.5 multiplied by 10-4 C are divided by 0.30 m. What is the force between the two charges.
A 1.25 meter long wire has a mass of 150 grams. The wire is stretched with a force of 2 Newtons. What is the velocity of a wave over the wire
A child rides a horse in a circular path on a merry-go-round. how far is the horse from the center of the merry-go-round
A paperweight consists of a 9.00-cm thick plastic cube. Within the plastic a thin sheet of paper is embedded, what is the index of refraction of the plastic
The primary coil of a transformer has N1= 300 turns, and the secondary coil has N2= 1810 turns. find rms voltage is developed across the secondary coil?
The Earth is constantly being bombarded by cosmic rays, which consist mostly of protons. Assume that these protons are incident on the Earth's atmosphere from all directions at a rate of 1090. protons per square meter per second.
Consider a uranium nucleus to be a sphere of radius R = 7.4x10^-15 m with a charge of 92 e distributed uniformly throughout its volume. What is the electric force exerted on an electron
question1a block with mass m 5.3 kg is attached to 2 springs with spring constants kleft 33.0 nm and kright 49.0 nm.
A current of 15.0 mA is maintained in a single circular loop with a circumference of 3.30 m. find the magnitude of the torque exerted by the magnetic field on the loop
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