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Bob can throw a 460 gram rock with a speed of 32 meter per second. He moves his hand forward 1 meter while doing so.
Find what is Bob maximum power output as he throws the rock in kW?
A solar cell generates a potential difference of 0.10 V when a450 resistor is connected across it, and a potential difference of 0.15 V when a1200 resistor is substituted.
A nonconducting sphere contains positive charge distributed uniformly throughout its volume. Which statements about the potential due to this sphere are true?
A ball of mass 0.1 kg is suspended vertically from the ceiling with a "massless" string and brought to rest. what will be the magnitude of the resulting angular acceleration
Two pieces of steel wire with identical cross sections have lengths of L and 2L. what is the frequency of the second harmonic in the longer wire
A simple pendulum makes 143 complete oscillations in 2.80 min at a location where g = 9.80 m/s2. Find the period of the pendulum
In a lightning bolt, 15 C of charge flows during a time of 1.5 10-3 s. Assuming that the lightning bolt can be represented as a long, straight line of current, what is the magnitude of the magnetic field at a distance of 30 m from the bolt?
When a person is given intravenous fluid, the bag containing the fluid is typically held about 0.9 m above the person's body. what is the pressure in the person's blood
An electron collides elastically with a hydrogen atom that is initially at rest. Assume all the motion occurs along a straight line. What fraction of the electron's initial kinetic energy is transferred to the atom? (Take the mass of the hydrogen ato..
A large storage tank with an open top is full to a height h0. The tank is punctured at a height h above the bottom of the tank. Discover an expression for how far from the tank the exiting stream lands. (Let d be the horizontal distance the stream of..
sam whose mass is 66 kg takes off across level snow on his jet-powered skis. the skis have a thrust of 270 n and a
Two charges are separated by a distance d and exert a mutual attractive force of magnitude F on each other. find the magnitude of the new mutual force of attraction
a spherical balloon expands when it is taken from the cold outdoors to the inside of a warm house. if the surface area
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