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A variable force, given by the analytical expression F = 3x2 with x in meters, acts on an object, changing only the kinetic energy of the object. Assume the particle starts out at x=0. a) Make a sketch of the force acting on the object as a function of its position. b) How much work is done on the particle as it moves from x=0 to x=3m? c) Assuming the particle had a speed of 5m/s at x=0, what is its speed at x=3m?
q1. a rifle fires a 2.39 10-2-kg pellet straight upward since the pellet rests on a compressed spring that is released
A carousel is initially at rest. At t=0 it is given a constant angular acceleration a=0.060 rad/s2, which increases its angular velocity for 8.0s. determine the angular velocity of the corousel
a. calculte the potential difference between the conductors if they are sperated by a distance of 2m (use x=0 as the v=0 reference point.) b. how much energy is gained by a 20uc charge
Supposing that the Earth's magnetic field at this location is 2.0*10^-5 T, due north, what will be the induced emf in the wire 2.0s after it is released (the wire is in free fall, you can calculate its velocity after 2.0s)
If you touch the terminal of a battery, What current will pass through your body if you touch the two terminals of a 9.0 V battery with your two hands
A 5.2 cm × 3.8 cm razorblade is placed on the surface of a beaker of water. Though the density of the razorblade is greater than the density of the water, Determine the area of the razorblade in m2
A projectile is fired at an angle such that the vertical component of its velocity and the horizontal component of its velocity are both equal to 19 m/s. How long does it take for the ball to reach its high point
An elevator (mass 5000 ) is to be designed so that the maximum acceleration is 6.20×10?2. What is the maximum force the motor should exert on the supporting cable
The mean distance between the earth and the sun is 1.5x1011m. The average intensity of solar radiation incident on the upper atmosphere of the earth is 1390 W/m2. Assuming that the sun emits radiation uniformly in all directions, determine the total ..
A solid, uniform ball rolls without slipping up a hill, How fast is it moving just before it lands and How far from the foot of the cliff does the ball land
A monatomic ideal gas containing 7.95 moles at a temperature of 235 K are expanded isothermally from a volume of 1.23 L to a volume of 4.44 L. Calculate the heat flow into or out of the gas
In a charming 19th-century hotel, an old-style elevator is connected to a counterweight by a cable that passes over a rotating disk 3.50 m in diameter. The elevator is raised and lowered by turning the disk, and the cable does not slip on the rim ..
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