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A woman is 1.7 m tall and has a mass of 51 kg. She moves past an observer with the direction of the motion parallel to her height. The observer measures her relativistic momentum to have a magnitude of 1.8 x 1012 kg·m/s. What does the observer measure for her height?
Is kinetic energy of a system conserved when two objects collide and stick together? What about the momentum of the system? What kind of collision is this (elastic or inelastic )?
A car traveling at 25 m/s ( about 55 mph) crashes into a road barrier and comes to a stop in 0.2 sec. What is the average force in Newtons felt by a 75 Kg person in a set belt
Two identical capacitors store different amounts of energy: capacitor A stores 2.2 x 10-3 J, Find the voltage across the plates of capacitor A
During an initial stage of construction, the beam is not to be bolted to the wall, but to be held in place solely by friction. What is the least coefficient of friction between the beam and the wall for the beam to remain in static equilibrium.
A 2.5kg mass is attached to a spring and placed on the horizontal, smooth surface. A horizontal force of 18.4 N is necessary to hold the mass at rest while it is pulled 0.210 m from its equilibrium position.
A water balloon is thrown horizontally at a speed of 2.0 m/s from the roof of a building that is 6.00 m above the ground. Determine which balloon hits first and how much sooner it hits the ground than the other balloon
What is the total contact force on the log by ropes 1 and 2 combined? (e) First give the magnitude of the N-S component of the combined contact forces of ropes 1 and 2. You have to decide for yourself if this combined component points North or Sou..
a. calculte the potential difference between the conductors if they are sperated by a distance of 2m (use x=0 as the v=0 reference point.) b. how much energy is gained by a 20uc charge
Hexane (C6H14) burns with air (21 % O2, 79 % N2) in stoichiometric proportions. Also determine the mole fraction of each species in the product mixture
If an astronaut dropped a small rock near the surface of Pluto, how far (in m) would the rock fall in 2.4 s
In order to fabricate a uniform wire of resistance 1.2 ?, out of m=1 g copper which has a density of 8.92×103 kg/m3, What should be the diameter of the wire
A 1.5 V battery is rate at 1,800 milliamp hrs (mAh). How much electrical energy (in joules) is stored in the battery when it is new
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