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1. A can of sardines is made to move along an x axis from x1 = 0.2 m to x2 = 1.2 m by a force given by F = iF0exp(-0.5x), with x in meters and F0 = 4 N. (Here exp is the exponential function.) How much work is done on the can by the force?
W = _____J
2. What work is done by a force (in newtons) F = 3.3xi + 3.5j, with x in meters, that moves a particle from a position r1 = 2.5i + 3.5j to r2 = - 3.1i - 2.1j?
A solid, uniform disk of radius 0.250 m, Find the angular speed of the disk at the bottom of the ramp
Most of us know intuitively that in a head-on collision between a large dump truck and a subcompact car, you are better off being in the truck than in the car. what force does the seat belt exert on each driver
Over a time interval of 1.92 years, the velocity of a planet orbiting a distant star reverses direction, changing from +19.7 km/s to -19.1 km/s.
a block of mass m=2.00kg is attached to the end of an ideal spring and its initially hanging motionless. with what angular frequency will the block oscillate
A bullet of mass mb = 16 g is fired with a speed of 260 m/s at a target that is a sheet of metal (mass mt = 410 g). what is the angular velocity of the target plus bullet just after the bullet hits
Consider a sample of diatomic ideal gas which is taken through the following cycle: A constant pressure process that doubles the volume of the gas, What is the efficiency of this cycle
q1. on the wheel of fortune game show a solid wheel of radius 6.7 m and mass 10 kg is given an initial counter
A 19.6cm diameter coil consists of 40 turns of circular copper wire 1.7mm in diameter. estimate the current in the loop
Consider a model thermodynamic system in which the allowed (nondegenerate) energy levels are 0, ? (epsilon), 2? (epsilon), 3? (epsilon). Determine how many macrostates are possible
A small steel ball with a mass of 80 g is releasesd from a resting height of 1.25 m above a ridgid metal plate. What is the velocity of ball before impact.
A Carnot heat engine is to be designed with an efficiency of 81%. what is the temperature of the "hot" reservoir
Ultraviolet light with a wavelength of 35nm shines on a gas of hydrogen atoms in their ground states. Some of the atoms are ionised by the light. What is the kinetic energy of the freed electrons in this process
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