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An explosion breaks an object initially at rest into two pieces, one of which has 1.8 times the mass of the other. If 7300 Joule were released in the explosion, compute how much kinetic energy did the heavier piece get?
A beam of particles is directed at a 0.014-kg tumor. There are 1.9 Ã- 1010 particles per second reaching the tumor, Find the biologically equivalent dose given to the tumor in 22 s
for safety in climbing a mountaineer uses a nylon rope that is 50 m long and 1.0 cm in diameter. when supporting a
An initially stationary 2.0 kg object accelerates horizontally and uniformly to a speed of 20 m/s in 1.9 s. (a) In that 1.9 s interval, how much work is completed on the object by the force accelerating it.
two untethered astronauts at rest are in space when one pushes off the other. How far apart are the two astronauts after 1 minute
The temperature of the surface of the sun is 6000K and its radius is 696,000Km. How much energy is the sun radiating into space per second
An electromagnetic wave is travelling in vacuum along the horizontal or x-axis. It consists of an electric field of peak strength 2.1 x 10-5 Vm-1 in the vertical direction or z axis and a magnetic field. Find the magnitude of the associated pointin..
The speed of a bobsled is increasing because it has an acceleration of 2.4 m/s2. At a given instant in time, the forces resisting the motion, including kinetic friction and air resistance, total 450 N. The mass of the bobsled and its riders is 245..
A pulsed proton beam is fireat a target each last 45.0ns and there 3.00 X 10^9 protons in each pulse, What is the average pressure on the beam spot during the pulse if the protons are absorbed by the target
A 0.2 kg object is suspended from a spring with a spring constant of K = 10 N/m. What is the potential energy of the system
An alpha particle (the nucleus of a helium atom, with charge +2e and a mass four times that of a proton), What is the speed of the antiproton when the particles are 1.1nm apart
a ray of light traveling through one type of glass, In which type of glass does light travel at a higher speed
A ball with a radius of 10cm falls through the air toward the ground. what is the maximum speed it will obtain while falling
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