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In 1956, Frank Lloyd Wright proposed the construction of a mile-high building in Chicago. Suppose the building had been constructed. Ignoring Earth's rotation, find the change in your weight if you were to ride an elevator from the street level, where you weigh 810 N, to the top of the building.
A microscope has a 16.8 cm tube length, a 0.64 cm focal length of the objective lens, calculate the microscope's magnification
A 50.0kg pole vaulter running at 10.0m/s vaults over the bar. Assume that the vaulter's horizontal component of velocity over the bar is 1.0 m/s and disregarding air resistance, how high was the jump.
Calculate the speed of the fetal heart wall at the instant this measurement is made.
A cube of mass m = 6.55 kg is placed on an inclined plane of mass M = 10.07 kg, which makes an angle ? = 42.20° with the horizontal. What is the normal force on the inclined plane
Identical samples containing 32P are measured for a period of 1 hr in a counter having an efficiency of 44 percent and a negligible background. From a large number of observations, the mean number of counts in 1 hr is (2.93 x 10^4)
A 2,200-kg car moving east at 10.0 m/s collides with a 3,000-kg car moving north. The cars stick together and move as a unit after the collision, Find the speed of the 3,000-kg car before the collision
Calculate the force exerted on a rocket, given that the propelling gases are expelled at a rate of 1400kg/s with a speed of 7.1×104m/s
Then a second inductance L2 =10 mH is connected in parallel with L1. Find out (a) the current that the generator delivers to L1 and (b) to the parallel combination.
the speed at which the ball left the quarterback's hand.
The bolts on a car wheel require tightening to the torque of 90 N•m. If a 30 cm long wrench is used, what is the magnitude of the force necessary when the force applied at 53° to the wrench.
A particle of mass 0.500 kg is attached to the 100-cm mark of a meterstick of mass 0.150 kg. The meterstick rotates on the surface of a frictionless, Calculate the angular momentum of the system
A charge of -3.2 µC is fixed at the center of a compass. Two additional charges are fixed on the circle of the compass, which has a radius of 0.099 m. The charges on the circle are -3.95 µC at the position due north and +5.45 µC at the position du..
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