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Two ice skaters, with masses of 30 kilogram and 75 kilogram, are at the center of a 30 meter diameter circular rink. The skaters push off against each other and glide to opposite edges of the rink.
If the heavier skater reaches the edge in 30 second, find how long does the lighter skater take to reach the edge?
Find the speed of a satellite moving around the earth in a circular orbit that has a radius equal to six times the earth's radius of 6.38 106 m
Two steel guitar strings have the same length. String A has a diameter of 0.59 mm and is under 450.0 N of tension. Find the ratio of the wave speeds
A lamp (R = 146 ), an electric heater (R = 24 ), and a fan (R = 49 ) are connected in parallel across a 122 V line. What is the voltage across the fan
A rock is thrown vertically upward from ground level. 1.2 s later it reaches its maximum height and 1.8 s later, what is the height of the tower
q1. an iron bolt of mass 63.4 g hangs from a string 32.6 cm long. the top end of the string is fixed. without touching
You are playing college basketball and some time after crossing the midcourt line you shoot the ball at an angle of 53 degrees above the horizontal. how many points did you score
A 28.4kg beam is attached to a wall with a hinge and its far end is supported by a cable. what is the horizontal component of the force exerted by the hinge on the beam
A 15 g rifle bullet traveling 190 m/s buries itself in a 3.8 kg pendulum hanging on a 3 m long string, that makes the pendulum swing upward in an arc. Determine the horizontal component of the pendulum's maximum displacement.
For the infinite square well problem an electron spends 40% of its time in the n=3 state and 60% of its time in the n=5 state. What is the average energy of the electron
A mass (m) 100g is released from rest from 1.0m above the horizontal level. Find the vertical acceleration of the mass
What is the terminal speed at which the bar falls? Imagine the bar remains horizontal and in contact with the rods at all times.
An 8.00 point mass and a 15 point mass are held in place 50 apart. A particle of mass is released from a point between the two masses 13.00 from the 8 mass along the line connecting the two fixed masses.
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