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When the 210kg Genesis Mission capsule crashed with a speed of 311km/h, it buried itself 81.0cm deep in the desert floor. Assuming constant acceleration during the crash, at what average rate did the capsule do work on the desert?
A major league pitcher can throw a baseball in excess of 42.9 m/s. If a ball is thrown horizontally at this speed, how much will it drop by time it reaches the catcher who is 18 m away from the point of release.
A uniform thin rod of length 0.778 m is hung from a horizontal nail passing through a small hole in the rod located 0.043 m from the rod\'s end
q1. an iron bolt of mass 63.4 g hangs from a string 32.6 cm long. the top end of the string is fixed. without touching
The solar wind is a thin, hot gas given off by the sun. Charged particles in this gas enter the magnetic field of the earth and can experience a magnetic force, calculate the radius of the circular path on which the particle would move if it were a..
Two identical parallel-plate capacitors, each with capacitance C, are charged to potential difference ?V and then disconnected from the battery. Find the total energy of the system of two capacitors before the plate separation is doubled
A beam of unpolarized light of intensity 12.o w/m^2 is incident on an ideal linear polarizer, P1, whose transmission axis is in the vertical (y) direction, What is the intensity of light emerging from P1
The internal energy of a system increases by 500 J while 610 J of work are performed on it. What was the heat flow into or out of the system
A railroad car is released from a locomotive on an incline. what negative acceleration must it produce to bring the car to rest
A block of mass mb is attached to one end of a spring and is sliding on a horizontal frictionless surface. the other end of the spring is fixed. find the new period and new amplitude of the motion
A 200 weather rocket is loaded with 100 kg of fuel and fired straight up. It accelerates upward at 30 m/s^2 for 33 s, then runs out of fuel. Ignore any air resistance effects. Illustrate what is the rocket's maximum altitude?
A ball is thrown straight up from the ground with an initial velocity of 39.2 m/s; at the same instant, a ball is dropped from the roof of a building 27.7 m high - After how long will the balls be at the same height?
A laserpointer has a beam intensity of 55 W/m2 and a beam radius of 2.1 mm. what is the force on the car
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