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Two identical balls are thrown from the top of a cliff, each with the same speed. One is thrown straight up, the other straight down. How do the kinetic energies and speeds of the balls compare as they strike the ground?
imagine a truck with a mass of 25 metric tons t 1 t1000 kg barrelling down a highway at a speed of 59 mih. what is the
Consider a cube of sides a = 4.60 m, as shown in the diagram below. Suppose that an electric field is present and is given by E = bxn, Calculate the magnitude of the total charge within the cube
Not wanting to blow out the battery in the old truck from an over current, there is placed a resistor of 12 Ohms in series with the circuit from the 3 batteries. Judging from the heat of the resistor this person believes that 12 watts of heat is b..
Find how much time does it take an electron traveling at the drift velocity to transverse the 2 centimeter long tungsten filament that has a radius of 0.1 millimeter
A gas expands from 0.20m3 to 0.30m3 at a constant pressure of 1.01x105 Pa. During this process 12,100 J of heat flow into the gas. What is the change in internal energy of the gas
You stand on a frictionless platform that is rotating with an angular speed of 7.2 rev/s. What is the change in kinetic energy of the system
A standing wave is in a open end tube. The tube length is 1.80m, determine the fundamental frequency
Two slits are illumined by a 621nm light. The angle among the zeros-order bright band at the center of the screen and the fourth-order bright band is 15.9o. If the screen is 133 cm from the double slit, how far apart is this bright band from the cent..
Two speakers, one directly behind the other, are each generating a 152-Hz sound wave. What is the least separation distance between the speakers that will produce destructive interference at a listener standing in front of them.
A ball of mass m makes a head-on elastic collision with asecond ball (at rest) and rebounds with a speed equal toone-fifth its original speed. What is the mass of the second ball
Consider a pendulum suspended at some location on the Earth. The length of the pendulum can be taken to be much shorter than the radius of the Earth. Approximate the Earth as a sphere. Find an equation for the angle, alpha, that the pendulum make..
A flywheel in a motor is spinning at 580 {rm rpm} when a power failure suddenly occurs. The flywheel has mass 40 {rm kg} and diameter 75 {rm cm}.
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