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Calculate the kinetic energy that the earth has because of its rotation about its own axis. For comparison, the total energy used in the United States in one year is about 9.33 x 109 J.
A system consists of two particles. Particle 1 with mass 2.0 kg is located at (2.0 m, 6.0 m) and has a velocity of (2.6 m/s, 4.1 m/s). find the position and the velocity of the center of mass of the system
Two particles of mass m1= 2.3 kg and mass m2 = 4.0 kg that are free to move on a horizontal track are initially held at rest so that they compress a spring as shown in the figure below. The spring has a spring constant k = 395 N/m and is compressed 0..
A stalactite on the roof of a cave drips water at a steadyrate to a pool 4.0m below. As one drop of water hits the poola second drop is in the air, How many drops per minute fall into the pool
Consider a spherical Gaussian surface and three charges:q1=1.76microC, q2= -2.50microC, and q3=3.69microC. Find the electric flux through the Gaussian surface
A compressive force of 2.7×104N is exerted on the end of a 24-cm-long bone of cross-sectional area 3.9cm2. By how much will the bone shorten
A rocket blasts off and moves straight upward from the launch pad with a constant acceleration. After 3.0 seconds the rocket is at a height of 77 m. what is its the speed at this time
Light of a wavelength 450 nm is incident on a sodium emitter in a photoelectric effect apparatus. Sodium is 2.3 eV, What is the stopping potential for the emitted electrons
In an L-R-C series circuit, theresistance is 400 Ω, the inductanceis 0.380 henrys, and the capacitance is2.00×10−2 microfarads. What isthe resonance angular frequency ωo of thecircuit? The capacitor can withstand a peak voltageof 530 volts
Unless otherwise stated, all objects are located near the Earth's surface, where = 9.8 . A hockey puck with a weight of 1.0 is sliding freely across a section of very smooth (frictionless) horizontal ice. Calculate the upward force on the puck in bot..
A person pushes a 19.6-kg shopping cart at a constant velocity for a distance of 27.3 m on a flat horizontal surface. What is the magnitude of the force that the shopper exerts
A 220 g block is attached to a horizontal spring and executes simple harmonic motion with a period of 0.150 s. If the total energy of the system is 3.50 J.
Your clock radio awakens you with a steady and irritating sound of frequency 600 Hz. One morning, it malfunctions and cannot be turned off. What is the frequency of this reflected sound
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