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Consider a tennis ball cannon people use to practice their game:
a) estimate the velocity of the ball shot out of these cannons in meters/sec
b) estimate the weight of the tennis ball in kilograms(1kg= 2.2 pounds)
c) what is the approximate wavelength of these tennis balls?
d) why wouldn't a Scanning Tennis Ball Microscope be a good idea ( except for the obvious amusement value)
question1a uniform electric field of magnitude 642 nc exists between two parallel plates that are 4.06 cm apart. a
One mole of an ideal gas at 27 °C is expanded isothermally from an initial pressure of 3 atm to a final pressure of 1 atm in two ways. (a) reversible, and (b) against a constant external pressure of 1 atm. find q, w, ΔU, ΔH, ΔSsys, ΔSsurr, ΔStotal..
A railroad car of mass 2.52 104 kg is moving with a speed of 4.06 m/s. It collides and couples with three other coupled railroad cars, How much mechanical energy is lost in the collision
a skier of mass m is standing on a slope with an angle of elevation ø. After being given a tiny nudge, the skier slides down the slope, how much energy is lost while the skier slides down the incline
converging lens with a focal length of 6.00cm forms an image of a 5.00mm -tall real object that is to the left of the lens. where are the object images located
A glass soda bottle is emptied of soda and filled to the very top with water. A cork is carefully fitted into the top of the bottle, leaving no air between the cork and the water.
Two identical capacitors store different amounts of energy: capacitor A stores 2.2 x 10-3 J, Find the voltage across the plates of capacitor A
A ball is thrown vertically upward, starting at y = 0, with a velocity of 20.0 m/s. Take "up" to be the positive direction for this problem. Calculate the maximum vertical displacement of the ball
A piano tuner stretches a steel piano wire with a tension of 1040N . The wire is 0.400m long and has a mass of 3.90g. What is the frequency of its fundamental mode of vibration
A horizontal circular platform rotates counterclockwise about its axis at the rate of 0.877 rad/s. You, with a mass of 70.5 kg, compute the total angular momentum of the system
A spherical shell of copper with an outer diameter of 19.0 cm floats on fresh water with one third its volume above the water's surface
Two blocks of mass m and 75 kg are connected via a light cord over a massless, frictionless pulley as shown in the attached figure. If the 75 kg block starts 2.0 m above the floor and takes 3.0 s to reach the floor when released from rest, what..
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