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Block A with mass 4 kg travels with speed vi=3 m/s on a smooth horizontal surface and collides with a stationary block B whose mass is 4 kg. The blocks stick together when they collide. How much kinetic energy was lost in the collision?
A stick of uniform density with mass M = 7.8 kg and length L = 0.8 m is pivoted about an axle which is perpendicular to its length and located 0.11 m from one end. Ignore any friction between the stick and the axle. What is its angular speed as it ..
A magnetic field has a magnitude of 1.20 10-3 T, and an electric field has a magnitude of 5.40 103 N/C. find the magnitude of the net force that acts on the charge
Mercury is about 13.6 times the density of the human body. Assume that a person (Weight = 150lb {one could only wish}) were totally immersed in the mercury; what would be the buoyant force experienced by that person?
A rotating door is made from four rectangular glass panes, as shown in the drawing. find the magnitude of the door's angular acceleration
A 75 N/m spring is suspended vertically with nothing attached to it and rests at equilibrium. Then a mass is attached to the spring and given a nudge. Determine the mass attached to the spring
A 208.3 gram pendulum bob on a 1.92 meter long string is pulled to a height above its lowest position such that it makes an angle of 19.0 degrees with the vertical. Determine the speed of the pendulum bob
The lowest outdoor temperature ever recorded on Earth was %u2212128.6 %u25E6F, recorded at Vostok Station, Antarctica, in 1983. What is this temperature on the Kelvin scale
An inductor that has an inductance of 15.0 H and resistance of 30.0 W is connected across a 100-V battery. Calculate the rate of increase of the current
A laboratory cyclotron is used to accelerate alpha particles (He+2) with a Kinetic Energy of 184 MeV. The cyclotron radius r for these particles is
What is the magnitude of the normal force exerted by the car.
A bowling ball (mass = 7.4 kg, radius = 0.11 m) and a billiard ball (mass = 0.36 kg, radius = 0.028 m) may each be treated as uniform spheres. What is the magnitude of the maximum gravitational force that each can exert on the other?
q1. a certain groove in phonograph record moves past the needle at 36 cms. if the wiggles in the grove are 0.1 mm apart
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