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At the seashore, you observe a high-speed aircraft moving overhead at an elevation of 10,000 ft. You hear the plane 8 s after it passes directly overhead. Using a nominal air temperature of 40 °F, estimate the Mach number and speed of the aircraft.
A person throws a rock straight up into the air. At the moment itleaves the person's hand it is going 33mph. When the rock reaches its peak, how fast is it going and whatis the magnitude and direction of its acceleration?
Derive the speed of the wave water in a shallow pool of water of depth y. You may consider using a method similar to the derivation of the sound wave equation
A rifle with a mass of 2.5 kg fires a bullet with a mass of 5.5 g (0.0055 kg). The bullet moves with a muzzle velocity of 330 m/s after the rifle is fired. What is the momentum of the bullet after the rifle is fired
if you move at 14m/s toward a 2300Hz source that is movingtoward you with a ground speed of 38m/s, what frequency do you hear
q1. two thin wedding bands each with mass m and radius r are welded together so that each ring passes through the
Capacitors C1 = 6.03 uF and C2 = 2.45 uF are charged as a parallel combination across a 298 V battery, Calculate the resulting charge on capacitor C2
You exert a force as shown in the diagram to push a large crate of books (about 1 m high, m = 45.0 kg) across a rough floor at constant speed v = 0.650 m/s. Find the rate at which work is done by you
As part of a safety investigation, two 1200- {rm kg} cars traveling at 24- {rm m/s} are crashed into different barriers.
An explosive charge imparts a velocity of 10,350 feet per second to a mortar as it exits the muzzle of mortar. If the mortar is elevated at 80 degrees what are the horizontal and vertical velocities on the mortar shell.
A small 15{rm g} bug stands at one end of a thin uniform bar that is initially at rest on a smooth horizontal table. The other end of the bar pivots about a nail driven into the table and can rotate freely, without friction.
You have 21 tuning forks that oscillate at close but different frequencies. What are the minimum number of different beat frequencies you can produce by sounding the forks 2 at a time, depending on how the frequencies differ
Two people carry a heavy electric motor by placing it on a light board 2.00 m long. One person lifts at one end with a force of 100 N, and the other lifts the opposite end with a force of 900 N.
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