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In his 1865 science fiction novel From the Earth to the Moon, Jules Verne described how three astronauts are shot to the Moon by means of a huge gun. According to Verne, the aluminum capsule containing the astronauts is accelerated by ignition of nitrocellulose to a speed of 11 km/s along the gun barrel’s length of 220 m. (a) What is the average acceleration of the capsule in the gun barrel? (b) Is that acceleration tolerable to the astronauts? A modern version of such gun for passenger-less transport into space has been proposed. In this modern version, called the SHARP (Super High Altitude Research Project) gun, ignition of methane and air shoves a piston along the gun’s tube, compressing hydrogen gas that then launches a rocket. During this launch, the rocket moves 3.5 km vertically from rest and reaches a speed of 7.0 km/s. Once launched, the rocket can fire additional boosters to gain additional speed. (c) What would be the average acceleration of the rocket within the SHARP gun? (d) How much additional speed is needed via the boosters if the rocket is to orbit Earth at an altitude of 700 km?
The polarizers are rotated, so that the second polarizer has a transmission of 43.6 degrees with respect to the first polarizer, find the intensity of the beam
A 250g steel ball and a 500g steel ball each hang from 3.0-m-long strings. At rest, the balls hang side by side, barely touching. To What angle does each ball rebound
A coin rests on the bottom of a beaker filled with an unknown liquid. A ray of light from the coin travels to the surface of the liquid and is refracted as it enters into the air. How fast is the light traveling in the liquid
A 25 gram ball is fired with an initial speed v1 toward a 125 gram ball that is hanging motionless from a 1.25 meter string. The balls have a perfectly elastic collision. As a result, the 125 gram ball swings out until the string makes an angle of..
What is the total dose equivalent of 1 rem of fast neutrons, 0.5 rad of low energy betas, 25 ergs per gram of thermal neutrons, and 150 mR of diagnostic x-rays
A car moves horizontally with a constant acceleration of 3 m/s2. A ball is suspended by a string from the ceiling of the car; What angle does the string make with the vertical
The gauge pressure at the bottom of a reservoir is 7.0 times what it is at a depth of 1.3 m. How deep is the reservoir
A basketball can be modeled as a thin walled spherical shell with a mass of 0.600 kg and a radius of 12.0 cm. What is the rotational kinetic energy of the ball
A van is approaching a stationary motion detector at 45 m/s. The motion detector emits ultrasonic sound waves toward the van, what is the frequency of the reflected sound measured by the detector
A 500 kg spacecraft bound for a 5,000 km circular orbit around Jupiter is constructed and fueled in a 350 km circular orbit at Earth. what is the mass of fuel needed
The triangular loop of wire in the drawing carries a current of I= 6.91 A. A uniform magnetic field is directed parallel to the side AB of the triangle and has a magnitude of 2.77 T.
a ball with a mass of 10g is swung in a horizontal circular path on a string of length 0.5m. if the balls speed is 4.5m/s, estimate the centripetal acceleration
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