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Consider two displacements, one of magnitude 2.9 m and another of magnitude 4.4 m. What angle between the directions of this two displacements give a resultant displacement of magnitude
(a) 5.0 m,
(b) 2.5 m, and
(c) 4.1 m.
The tropical year, the time from vernal equinox to the next vernal equinox, is the basis for our calendar. Find the number of seconds in one and a half tropical years
A spring has an unstretched length of 12cm. When an 80 g ball is hung from it, the length increases by 4.0 cm. What is the period of the oscillation
One of the fastest recorded pitches in major-league baseball, thrown by Tim Lincecum in 2009, how far would the ball fall vertically by the time it reached home plate, 60.5 ft away
Suppose you have to move a heavy crate of weight 875 N by sliding it along a horizontal concrete floor. What is the magnitude Fp of the minimum force you need to exert on the crate to make it start sliding along the floor
A wrecking ball (weight = 5680 N) is supported by a boom, which may be assumed to be uniform and has a weight of 2520 N. compute the tension in the support cable
A bug (2 grams) crawls from the center to the edge of a disk that is freely turning at 20 rpm. What is the disk's new angular speed
A 6kg block, starting at rest, is pulled up a ramp by a motor coiling a rope such that the tension is 60N. How much energy is supplied by the motor to move the block up the ramp
Unless otherwise stated, all objects are located near the Earth's surface, where g = 9.80 m/s2. A student weighing 660N crouches on a scale and suddenly springs vertically upward
A rectangular container measuring 24 cm 48 cm 55 cm is filled with water. What is the mass of volume of water in kilograms.
A wooden block of mass m = 9 kg starts from rest on an inclined plane sloped at an angle from the horizontal. find the magnitude of the kinetic frictional force on the block
Near the South Pole, a supply plane going at 120 mph drops a 60 kg supply package into a sled that was initially at rest. Estimate the mass of the sled
A parallel plate capacitor has a capacitance of 6.3 µF when filled with a dielectric. evaluate the dielectric constant of the dielectric
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