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A 32000-kg railroad freight car collides with a stationary caboose car. They couple together, and 31 percent of the initial kinetic energy is dissipated as heat, sound, vibrations, and so on. What is the mass of the caboose?
A straight wire in a magnetic field experiences a force of 0.030 N when the current in the wire is 2.7 A. What is the new current
A 19-cm-long, 210g rod is pivoted at one end. find the period if the rod and clay swing as a pendulum
A solid non-conducting sphere has a uniform volume charge density and a radius of 6 cm. The total charge on the sphere is 2nC.
A car in a roller coaster moves along a track that consists of a sequence of ups and downs, Derive a general expression for the speed v of the car
A spacecraft flies in the horizontal direction at a speed of v=0.980c, What is the slope angle to an astronaut on the spacecraft
The pressure in a traveling sound wave is given by the equation %u0394p=(1.50 Pa)sin((%u03C0/2.)*(0.90 m-1x -297.0 s-1 * t)). Find the pressure amplitude
A 2030- test rocket is launched vertically from the launch pad. Its fuel (of negligible mass) provides a thrust force so that its vertical velocity as a function of time is given by, What was the initial thrust due to the fuel
Two radio antennas are separated by 1.20m. Both broadcast identical 750 MHz waves. If you walk around the antennas in a circle of radius 20m, how many maxima will you detect.
Assume the ball leaves the table moving horizontally with this speed. If the table is 1 meter above the floor, what is the horizontal distance the ball travels before it hits the floor
a positive charge of -4 microcoulombs is llocated at the center of a spherical shell of inner radius 2cm and outer radius 3cm, what is the total charge on he inner shell
A heat engine has an effiency of 35.0 % and recieves 150 K of heat per cycle. How much heat does it exhaust in each cycle
question1the rhinestones in costume jewellery are glass with index of refraction 1.50. to compose them more reflective
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