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a variable force f(x) =8x^3 -2x acts on a 2.4 kg objects movinf it from x=0.2 to x=1.4 m. what was the work done on the object? what was the final kinetic enegy is the object starts from rest?
A student on a piano stool rotates freely with an angular speed of 3.05rev/s . The student holds a 1.45kg mass in each outstretched arm, 0.779m from the axis of rotation. Calculate the final kinetic energy of the system
A 148 gram baseball is hit toward the left by a bat. The magnitude of the force the bat exerts on the ball as a function of time, Find the magnitude of the impulse that the bat imparts to the ball
A series RLC circuit contains a resistor of 20 ohms, a capacitor of 0.75x10^-6 F, and an inductor of 0.120 H. what is the rms current in the circuit when operating at its resonance frequency
A car rounds a curve that is banked inward. The radius of curvature of the road is R = 114, Find the maximum speed that the car can have without slipping
One icy day, my brother Nate decides to load boxes into his commissary truck by sliding them up a ramp into the back of his truck, find the minimum velocity necessary such that when the box comes to rest it will stay at rest
The stoplight had just changed and a 1900kg Cadillac had entered the intersection, heading north at 3.8m/s, How fast was the Volkswagen going just before the impact
Let the angle of incidence be 70° and the transmitted region be diamond with n2 = 2.42
A cube with the side length 1.53 meters of solid styrofoam is completely submerged in fresh water such that the top of the styrofoam block is parallel to the water surface and is 2.55 meters beneath the surface
A mass m orbits around a planet of mass M in a parabolic orbit of the form y = x^2/(4L), which has focal length L. Find the angular momentum in 3 different ways: a) Find the speed at closet approach.
A 1 kg wheel (hoop) rolls 5 rev. across a horizontal surface (without slipping)a distance of 3.2 m. if the wheel rolls for 3 sec. determine the angular velocity of the wheel
It is 150 cm from your eyes to your toes. You are standing 196 cm in front of a tall mirror. How far is it from your eyes to the image of your toes.
define the magnitude of the external field. The Speed time graph of a particle moving along a fixed direction is shown below. Obtain the distance travelled by the particle between t=0 and t=10s. What is the average of the particle over this interva..
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