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A wheel of radius 0.29 m is rotating at a uniform rate. If a point at the outer edge of the wheel has a speed of 25 m/s, what is the rate of rotation, in terms of rpm (revolution per minute)?
Mars rotates on its axis once every 24.8 hours, its mass is 6.42×1023 kg and its radius is 3.37×106 m. Estimate the maximum speed that an astronaut can walk on the surface of Mars
A 119 kg fullback runs at the line of scrimmage. How fast was he running initially
A 70.0 kg skier with an initial speed of 13.0 m/s coasts up a 2.50 m high rise as shown in Figure 6.23. Find his final speed at the top
question for an rlc circuit with a resistance of 11.0 k a capacitance of 9.0 f and an inductance of 26.0 h what
Assume that there is a very beautiful ornate crown, supposedly made of solid gold, how would you determine its density
A solid iron cylinder (d = 5 cm, L = unknown, SG is on the sheets) is falling inside a tube with constant velocity 9.77 m/s. The gap is 1 mm, it is filled with lubricant oil. What is the oil viscosity (in Pa·s)? Compute shear rate as we did in the ca..
A 500.0 g pot of water at room temperature (20.0C) is placed on a stove. How much heat is required to change this water to steam at 100C
The energy gap in silicon is 1.1eV. The average electron effective mass is 0.31m, where m is free electron mass. Calculate the electron concentration in the conduction band of silicon at T=300K
Sodium has a volume expansion coefficient of 15' 10-5 K-1. Calculate: a. The percentage change in the Fermi energy as the temperature is raised from 0K to 300K. Comment on the Magnitude of the change and the percentage change of the Fermi velocity..
In 4 to 5 billion years, the Sun is expected to enter a red giant phase, in which its outer layers will gradually expand out beyond Earth's present orbit. If the Sun's angular momentum is conserved as it expands, and its mass doesn't change, will its..
The two plates of a capacitor hold +2350 µC and -2350 µC of charge, correspondingly, when the potential dissimilarity is 910 V. What is the capacitance? Answer in µF
suppose that the springs have somehow not yet compressed to their maximum amount. How much are the springs compressed.
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