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Calculate the work input to the process.A piston-cylinder device contains air (2kg) at 100kPa and 300K. The air is compressed slowly and frictionless by following a polytropic process with a polytropic exponent of 1.4. The temperature reaches at 360K at the final state.
Astronauts on a distant planet set up a simple pendulum of length 1.2 m. The pendulum executes simple harmonic motion and makes 100 complete oscillations in 370 s. What is the magnitude of the acceleration due to gravity on this planet?
The magnetic field of an electromagnetic wave in a vacuum is Bz=(2.5 microT)Sin(1.9*10^7 x-2(3.14)ft), where x is in m and t is in s. What is the wave's electric field amplitude
The intensity of sunlight at the top of the Earth's atmosphere is about 1360W/m^2. What is the total power emitted by the Sun
An 8.50 kg point mass and a 15.0 kg point mass are held in place 50.0 cm apart. Find the magnitude of the acceleration of the particle
The frequency doubled output of a Nd3+ YAG laser has a wavelength of 532nm. how many photons does the laser emit at 532nm in 3 minutes
The temperature of a gold bar rises by 10.0°C when it absorbs 0.677 kJ of energy by heat. The mass of the bar is 525 g. Determine the specific heat of gold from these data
Two charge distributions, Q1=1.4X10^-10C and Q2=3.5X10^-10, WHat is the force between them and the electric field between them?
Two people initially separated by 75 m move toward each other. One with a speed of 3 m/s, how long is it before they meet
In a typical game of squash, two people hit a soft rubber ball at a wall until they are about to drop due to dehydration and exhaustion. What will be the temperature increase of the ball after one bounce
During a recent thunderstorm the wind was blowing past your roof at 40 m/s. Assuming that the density of air is 1.20 kg/m^3, What is the net force experienced by the roof
Calculate the location of the center of mass of the Earth-Moon-Sun system during a full Moon. A full Moon occurs when the Earth, Moon, and Sun are lined up. make Use of a coordinate system in which the center of the sun is at x=0 and the Earth and..
Professional baseball pitchers can deliver a pitch which can reach the blazing speed of 100 mph (miles per hour). how much kinetic energy does the ball have
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