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Air that initially occupies 0.144 m3 at a gauge pressure of +70 kPa is expanded isothermally to atmospheric pressure and then cooled at constant pressure until it reaches its initial volume. Compute the work done by the air
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A 10 \rm g bullet traveling at 440m/s strikes a 12kg , 1.2-\rm m-wide door at the edge opposite the hinge. The bullet embeds itself in the door, What is the angular velocity of the door just after impact
After reaching his lowest point, he oscillates up and down, hitting a low point eight more times in 44.0. He finally comes to rest 22.0 below the level of the bridge. Illustrate what is the spring stiffness constant?
a ball (mass=m) moving in the positive x direction with speed v collides with a block (mass=M) initially at rest, compute the mass of the block
A thin spherical copper shell of radius 9.5 cm carries an excess charge of -4.2 nC. How many excess electrons are on the outer surface of the shell
A commuter train blows its horn as it passes a passenger platform at a constant speed of 35.0 m/s. t is the frequency observed by a person on the platform as the train approaches
When jumping, a flea reaches a takeoff speed of 1.2 m/s over a distance of 0.46mm, What is the flea's acceleration during the jump phase and How long does the acceleration phase last
A transverse sinusoidal wave on a string has a period T = 25.0 ms and travels in the negative x direction with a speed of 30.0 m/s. At t = 0, What is the initial phase angle
The angular position of a point on the rim of a rotating wheel is given by ? = 7.68t - 5.13t2 + 1.73t3, where ? is in radians and t is in seconds. find the angular velocities at the end of this time interval
Two long, parallel wires, each with the mass per unit length of 43 g/m, are supported in a horizontal plane by 6-cm long strings. Each wire carries the similar current, I, causing the wires to repel each other so that the angle, θ, between the sup..
A 196.3 kg satellite is in a circular orbit of 26,273 miles (42,300,000 m) in radius. The force keeping the satellite in orbit is 40.1 N
Sketch a sinusoidal wave with an amplitude of 1 cm and a wavelength of 7 cm. What is the amplitude of the sum of these waves
A ball with a mass of .25 kg is placed on top of a spring with a spring constant of 800. N/m. Determine the elastic potential energy of the ball
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