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A subatomic particle has an unknown lifetime τ. The particle is created at t = 0 and travels around the Earth’s equator at speed 0.982 c. If the particle decays at the moment it completes one single trip around the Earth, what is τ?
A very long solid cylinder with radius R has positive chargeuniformly distributed throughout it, with charge per unit volume ? What is the electric field at a point outside the volume in terms of the chargeper unit length ? in the cylinder?
An interstellar cruise ship races by a Martian spaceport. According to galactic regulations, the safety strobe lights on the ship's bridge are assumed to blink every 1.50 seconds.
a spring with spring constant 15.0 nm hangs from the ceiling. a ball is attached to the spring and allowed to come to
A standing wave in a pipe with both ends open has a frequency of 444 Hz. The next higher harmonic has a frequency of 602 Hz. Determine the fundamental frequency. How long is the pipe?
A satellite has a mass of 99 kg and is located at 2.0 106 m above the surface of Earth. compute the potential energy associated with the satellite
If a discus thrower rotates through the last 46 degrees of a turn in 0.11 seconds and the distance from the axis of rotation to the center of the discus is 1.22m
A 100-kg object moves on a level surface with a coefficient of friction of 0.40. If the initial velocity is 15 m/s, how long will it take for it to come to rest
Calculate the force acting between two point charges of +10.0μC and -5 μC seperated by a distance of 10.0 cm in a vacuum
a 500 g steel rod 30 cm in length is pivoted about its center and rotated at 300 rpm.a what is the angular momentum?b
An aluminum wire having a cross-sectional area equal to 4.90 10-6 m2 carries a current of 8.00 A. Find the drift speed of the electrons in the wire
suppose tarzan leaps from the top of a 60-m tall building. if his initial speed is 24 ms and at an angle of 23 degrees
A circular coil of wire with 200 turns and a diameter of 6cm carries a current of 7A. What is the torque on the coil
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