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Consider an airplane flying at Mach 4 at 70,000 feet. A shock is formed due to supersonic flow. Find the total pressure at the nose using 3 approaches. (1) Bernoulli's equation, (2) the use of the isentropic relations and energy equation , and (3) Rayleigh's Pitot Formula. Compare and comment on the validity of the results.
A light spring with a spring constant of 80.0 N/m rests vertically on a table. A 2g balloon is filled with helium (0°C and 1 atm pressure) to a volume of 5.00 m3 and connected to spring, causing the spring to stretch and expand. How much does the ..
Describe what are the (a) magnitude and (b) direction of the boat's velocity relative to the ground? (c) How long does the boat take to cross the river?
Find out the relative rates at which clocks go at two different distances r1 and r2 from the center of the earth.
A solid cylinder with a radius of 4.0 {rm cm} has the same mass as a solid sphere of radius R. If the cylinder and sphere have the same moment of inertia about their centers, illustrate what is the sphere's radius?
At one instant a bicyclist is 75m due east of a park's flagpole, going due south with a speed of 13.0 m/s. Then, 10s later, the cyclist is 65 m due north of flagpole, going due east with a speed of 20.0 m/s.
The flywheel of an engine has a moment of inertia 2.20 {rm kg} cdot {rm m}^{2} about its rotation axis. What is its final kinetic energy.
Does the growth of a plant or animal violate the second low.
A baseball pitcher can throw a ball with a speed of 40. He is in the back of a pickup truck that is driving away from you. He throws the ball in your direction, and it floats toward you at a lazy 30. What is the speed of truck.
A woman on a bridge 104 m high sees a raft floating at a constant speed on the river below, She drops a stone from rest in an attempt to hit the raft, Find the speed of the raft
How various kilograms of nitrogen are boiled away in time of 7.50 h. car that hits a line of water barrels and takes 1.8s to stop.
A person who weighs 68 kg steps onto a spring scale in the bathroom, and spring compresses by 0.79cm. (a) what is the spring constant? (b) What is the weight of another person who compresses the spring by 0.34cm.
An uncharged capacitor is connected to the terminals of a 4 battery, and 12 flows to the positive plate. The 4 battery is then disconnected and replaced with a 7 battery, with the positive and negative terminals connected in the same manner as bef..
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