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A 1 ,000-kg car travelling initially with a speed of 20 m/scrashes into the rear end of an 8,000 kg truck moving in the same direction at 15m/s. The car and truck become entangled after the collision and movetogether.
(a) What is the speed of the entangled mass right after the collision?
(b) How much mechanical energy is lost in the collision?
Consider an element having excited states at 3.6 eV and 4.6 eV used as a gas in the Frank-Hertz experiment. Assume that the work functions cancel out. List all the possible peaks that MIGHT be observed with electron scattering up to an accelerating v..
Singly ionized (one electron removed) atoms are accelerated and then passed through a velocity selector consisting of perpendicular electric and magnetic fields. How fast are the ions moving when they emerge from the velocity selector
a straight wire in a magnetic field experiences a force of 0.034 n when the current in the wire is 2.5 a. the current
A 0.39 V potential di?erence is maintained across a 1.7 m length of tungsten wire that has a cross-sectional area of 0.85 mm2, What is the current in the wire
A comet orbits the Sun with a period of 96.81 years. The comet's distance of closest approach to the Sun (perihelion) is 1.685 AU. obtain the maximum distance of the comet from the Sun
A crate is dragged 4.0m along a rough floor with a constant velocity by a worker applying a force of 450N to a rope at an angle of 30? to the horizontal. What is the total work done on the crate
Suppose that the sound level of a conversation is initially at an angry 70 dB and then drops to a soothing 50 dB. Assuming that the frequency of the sound is 500 Hz, determine the (c) initial and (d) final sound wave amplitudes.
what is the minimum coefficient of static friction required between tires and race track if the car is to stay on the track at a speed of 130m/s.
a fluid at 690 kpa has aspecific volume of 0.25m3/kg and entersna process with a velocity of 150m/s. calculate the change in internal energy of the fluid
Light of wavelength 589 nm is used to view an object under a microscope
q1. a staging that weighs 440 n supports two painters one 110 n and the other 460 n. the reading in the left scale is
What is the final angular velocity
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