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A 0.55 kg mass sliding on a horizontal frictionless surface is attached to one end of a horizontal spring (with k = 850 N/m) whose other end is fixed. The mass has a kinetic energy of 17.0 J as it passes through its equilibrium position (the point at which the spring force is zero). At what rate is the spring doing work on the mass as the mass passes through its equilibrium position?
A 48.0 ice skater spins about a vertical axis through her body with her arms horizontally outstretched, making 2.50 turns each second. The distance from one hand to the other is 1.50. Biometric measurements indicate that each hand typically makes ..
Four identical metallic objects carry the following charges: +5.0 µC, +5.0 µC, -8.2 µC, and -4.0 µC. What is the final charge on each object
A bicycle wheel is rotating at 45rpm when the cyclist begins to pedal harder, What is the wheel's angular velocity, in rpm, 8.0s later
a mass m is attached to a string of length l and released when the string is horizontal, causing the mass to fall in a circular path. determine the maximum value of the tension force in the string
Write down an expression for the efficiency of the air cart bumper in terms of the initial and final kinetic energy of the cart. What defines a collision as elastic or inelastic.
A rocket that starts at rest with mass M ejects exhaust at a given speed u. What is the mass when its energy is maximum
What is the acceleration experienced by 0 tip of the 1.50 cm long sweep second hand on your wrist watch? In M/s^2.
Decide about the validity of Ampere's Law. Ampere's Law is valid.
A mass spectrometer applies a voltage of 2.00 kV to accelerate a singly charged positive ion. What is the mass of the ion
The patellar tendon attaches to the tibia at the tibial tuberosity. The tibial tuberosity is 8 cm from the center of the knee joint. how large is the force in the patellar tendon
What's the result when we grow up InGaN on the substrat by MBE I want a (pdf) discruption or I want to talk to any one who knew that's result.
Starting from rest, you move with a constant acceleration of 2.1 m/s2 for 15.0 s and then move with an acceleration of -2.1 m/s2 for another 15.0 s. What is your maximum speed attained
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