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A 2.40 kg object rotates around along a horizontal circle of radius r=0.720m. The angular velocity of the object is constant and is 4.00 rad/s. Obtain the centripetal acceleration and centripetal force...
Ac=?
Fc=?
One fragment, whose speed immediately after the explosion is zero, falls vertically. Illustrate what is the horizontal speed of the other fragment?
A 5 kg mass attached to a horizontal spring is pulled from its equilibrium position by 2 m and let go. what is the maximum velocity of the mass
The critical angle for a special type of glass in air is 41.8. The index of refraction for water is 1.33. What is the critical angle if glass is immersed in water.
The vertical displacement of particles in a string, where everything is measured in standard units, meters and seconds, What is the amplitude of the wave
A 15 pF capacitor is charged to 1 kV and then removed from the battery and connected in parallel to an uncharged 65 pF capacitor, Find the change in energy
Strictly speaking, as more and more skyscrapers are being built on surface of earth, does the day tend to become longer or shorter.
Calculate kinetic energy of a solid uniform sphere with a radius of 0.145m and a mass of 14.0kg if it is rotating at 6.35rad/s about an axis through its center
To keep her dog from running away while she talks to a friend, Susan pulls gently on the dog's leash with a constant force given by F = (2.1 N ) ^x+ (1.5 N )^y, How much work does she do on the dog
A 910 kg sports car collides into the rear end of a 2200 kg SUV stopped at a red light. calculates the speed of the sports car at impact
Four wires meet at a junction. In two of the wires currents I1 = 1.55 A and I2 = 2.15 A enter the junction. Find the current in the fourth wire and indicate its direction
Positive charges with magnitudes 3.50 mC and 6.75mC are located at the origin and at the point (10,0) metters on the x axis, respectively. What are the strength and direction of the field they generate at the point (0,10) on the y axis?
An air conditioner connected to a 129 V rms ac line is equivalent to a 17 capital omega resistance, What is the impedence of the air conditioner
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