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A swimmer heads directly across a river, swimming at 1.5 m/s relative to the water. She arrives at a point 42 m downstream from the point directly across the river, which is 83 m wide.
(a) What is the speed of the river current?
(b) What is the swimmer's speed relative to the shore?
(c) In what direction should the swimmer head so as to arrive at the point directly opposite her starting point?
In an interstellar gas cloud at 48.2 K, the pressure is 1.16 x 10-8 Pa. what is their mean free path
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A bungee jumper with mass 62.0 kg jumps from a high bridge. After reaching his lowest point, he oscillates up and down, Calculate the unstretched length of the bungee cord
The transformer in the power supply for a computer's 500-GB external hard drive changes a 120-V input voltage, what is the current in the primary and secondary when the drive is in operation
The wire is hung beween two towers and has a lenght of 143 cm.A cuurent of 111A exists in wire , Find the mass of wire
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A simple pendulum consists of a ball connected to one end of a thin brass wire. Determine the change in the period of the heated pendulum
in a harmonic pendulum, the lengths are increasing monotonically; the lengths are measured so that in a defined set of oscillations (i.e. 20 cycles in 20 seconds), what are a set of lengths that would work
What mass (in grams) of steam at 100°C must be mixed with 251 g of ice at its melting point, in a thermally insulated container, to create liquid water at 66.0°C? The specific heat of water is 4186 J/kg·K. The latent heat of fusion is 333 kJ/kg, an..
The pilot of an aircraft wishes to fly due west in a 47.7 km/h wind blowing toward the south. In what direction should the aircraft head
A student (m = 63kg) falls freely from rest and strikes the ground. During the collision with the ground, he comes to rest in a time of 0.040 s. From what height did the student fall
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