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Fish are hung on a spring scale to decide their mass (most fishermen feel no obligation to report the mass truthfully).
a) How far apart are the half-kilogram marks on the scale?
b) What is the mass of a fish that stretches the spring 5.50 cm?
c) What is the force constant of the spring in such a scale if it stretches 6.29 cm for a 11.8 kg load?
The velocity of a 621-kg auto is changed from 10.0 m/s to 44.0 m/s in 70.2 s by an external, constant force. What is the resulting change in momentum of the car
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A cyclotron designed to accelerate protons has an outer radius of 0.357 m. The protons are emitted nearly at rest from a source at the center and are accelerated through 644 V each time they cross the gap between the dees, Find the cyclotron frequ..
Calculate the speed of a proton after it accelerates from rest through a potential difference of 160.
An electric field with an average magnitude of about 220 N/C points downward in the atmosphere near Earth's surface. We wish to "float" a sulfur sphere weighing 4.8 N in this field by charging the sphere. What charge (in C), with the proper sign, mus..
A 60-kg skier starts from rest from the top of a 50-m high slope. If the work done by friction is -6.0 x 10^3 J, what is the speed of the skier on reaching the bottom of the slope?
An unstable particle having mass of 5.00x10^-27 kg is initially at rest. Find the rest masses of the fragments
suppose a heat engine pulls 7.24times104 j of work from the hot reservoir and 1.35times104 j of that energy is used to
Two circular coils of current-carrying wire have the same magnetic moment. The first coil has a radius of 0.095 m, What is the radius of the second coil
Jack and Jill are maneuvering a 3400 kg boat near a dock. Initially the boat's position is m and its speed is 1.0 m/s. How much work does Jill do
A satellite is in a circular orbit very close to the surface of a spherical planet. What is density (mass/volume) of the planet
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