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Two ice skaters are gliding together along the ice, both moving at a constant velocity (sliding without exerting a force). The first skater (the one in the back), with mass M1 = 55 kg, pushes the second skater (the one in front), with mass M2 = 81 kg, directly forward in the direction they are initially moving. After the push the first skater is not moving (velocity = 0) and the second skater is moving with a velocity of 1.35 m/s.
What is the initial speed of the skaters? Give your answer in m/s to three significant digits.
The equation of a transverse wave on a string is y = (6.1 mm) sin[(30 m-1)x + (300 s-1)t], What is the wave speed
Capacitors won't hold a charge indefinitely; as time goes on, charge gradually migrates from the positive to the negative plate. What is the Leakage resistance
A 5.6-kg bucket of water is raised from a well by a rope. If the upward acceleration of the bucket is 3.8 m/s2, find the force exerted by the rope on the bucket
A parallel-plate, air-gap capacitor has a capacitance of 0.15 ?F. The plates are 0.40 mm apart. What is the area of each plate
A box of weight Fg=2N accelerates down a rough plane that isinclined at an angle %u03C6=30 degrees above the horizontal, What is the work Wgrav done on the box by gravity
A 170? resistor, a 9.00×10?2?F capacitor, and a 350mH inductor are connected in series to a voltage source with amplitude 240V, What is the resonance angular frequency
A 250 - ? resistor is connected in series with a 4.80 - ?Fcapacitor. The voltage across the capacitor is vC=(7.60V)?sin[(120rad/s) t ]. Derive an expression for the voltage VR across the resistor
You would like to shoot an orange out of a tree with your bow and arrow. The orange is hanging 5.00 m above the ground. how far away can you stand to hit the orange
NASA has attempted to use the concept of motional EMF to produce energy for satellites in orbit. what is the equivalent resistance of the electrical system of the satellite
A mass m equals 4 kg on a slanted surface theta equals 30 degrees. A light rigid cord runs from mass m to pully beta equals 1/2, calculate the magnitude of the systems acceleration
An object of mass m1 = 2.10 kg placed on a frictionless, Draw free-body diagrams of both objects, This answer has not been graded yet
A hydrogen atom initially in the ground state absorbs a photon, which excites it to the n = 11.0 state. Determine the frequency of the photon
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