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Jet propulsion is when a jet of fluid is used to propel an object. This is an example of conservation of momentum becausethe passengers inside the jet experience accelerationthe fuel and the jet move in the same direction with equal forcethe momentum of the engine-compressed air system is almost the same before and after the fluid is ejectedthe motion opposes the force of gravity
A typical person radiates about 62 W of power at room temperature. Given this result, how long does it take for a person to radiate away the energy obtained by consuming a 230-calorie doughnut.
A laser emits 1.00 x10^20 photons/sec. The laser has a wavelength of 473 nm. What is the power output of the laser
q1. compute earths gravitational force on the shuttle astronauts while orbiting at an altitude of 220 miles or 354 km
A person pushes a 12.3-kg shopping cart at a constant velocity for a distance of 16.5 m on a flat horizontal surface. calculate the work done by the pushing force
What is final speed of the block
An electric utility company supplies a customer's house from the main power lines (120 V) with two copper wires, find the power delivered to the customer
A 1.80kg block slides on a rough horizontal surface. The block hits a spring with a speed of 2.50m/s, what is the force constant of the spring?
A van der Waals gas undergoes an isothermal expansion from specific volume v1 to specific volume v2. Calculate the change in the specific Helmholtz function for this process.
A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, What are the magnitude and direction of the electric field
A ray of light is incident normally on a glass plate 6.00 cm thick and of refractive index n = 1.29, find the increase in the distance the ray travels in the glass
A cylindrical tank 3.0m deep is full to the brim with water. Sunlight first hits part of the tank bottom, Find the tank's diameter.
A 1000 kg cannon is pointed at 30 degrees to the horizontal. Its muzzle speed is 300 m/s. It fires a ball, mass 5 kg. At what angle and speed will the ball fly out
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