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A catapult launches a rock at a 30 degree angle with respect to thehorizontal. Find the maximum height attained if the speed of therock at its highest point is 30 m/s.
A 3.7-m-tall, 60-cm-diameter concrete column supports a 2.0×10^5 load. By how much is the column compressed
An object attached to a horizontal spring is oscillating back and forth along a frictionless surface. The maximum speed of the object is 1.25m/s.
A uniform 1.9-kg rod that is 0.97 m long is suspended at rest from the ceiling by two springs, one at each end. Find the angle that the rod makes with the horizontal
Sunlight shines directly on to the wall of a large soap bubble (n = 1.33) which is floating in air (n=1). What is the minimum thickness it could have to produce completely destructive interference for blue light (%u03BB = 475 nm)
Steel train rails are laid in 12.6m -long segments placed end to end. The rails are laid on a winter day when their temperature is -2.00C, How much space must be left between adjacent rails
A communications satellite is in a synchronous orbit that is 3.6 x107 m directly above the equator. The satellite islocated between two cities almost on the equator that are separated by a distance of 3.5 x 106 m.
Two balls with masses of 2.0 kg and 6.0 kg travel toward eachother at speeds of 12 m/s and 4.0 m/s, respectively. If the ballshave a head-on, inelastic collision and the 2.0-kg ball recoilswith a speed of 8.0 m/s, how much kinetic energy is lost in t..
Assume that a cloudy parcel has T = 275 K, wl = 1.5 g/kg. The background atmosphere has T = 274 K, and a relative humidity of 0.6. Assume a total pressure p = 600 hPa. What is the total density of the air in the cloud (due to dry air, water vapor..
A thin, 80.0 g disk with a diameter of 6.00 cm rotates about an axis through its center with 0.300 J of kinetic energy
consider an object with that produces an image with . note that whenever you are working with a physical object the
Compiute the average power output in horsepower. Calculate assuming the body is 14% efficient, what rate of energy input was required.
A volleyball is spiked so that its incoming velocity of +4.2 m/s is changed to an outgoing velocity of -24 m/s. What impulse does the player apply to the ball
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