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Quesiton: You are testing a new amusement park roller coaster with an empty car with a mass of 108kg. One part of the track is a vertical loop with a radius of 12.0m. At the bottom of the loop (pointA) the car has a speed of 25.0m/sand at the top of the loop (pointB) it has speed of 8.00m/s.
As the car rolls from point A to point B, how much work is done by friction?
A man on the moon with a mass of 90 Kg weighs 146 newtons. The radius of the moon is 1.74 X 10^6 meters. Find the mass of the moon.
A bar of length .15 m, width .05 m and negligible height is spinning about its center of mass at 2 radians per second. what is their final angular velocity
two vehicles of equal mass at a 90 degree intersection. If the momentum of vehicle A is 1.20 x 10^5 kg km/h east and the momentum of vehicle is 8.50 x 10^4 kg km/h north, what is the resulting momentum of the final mass
The giant hornet Vespa mandarinia japonica preys on Japanese bees. However, if one of the hornets attempts to invade a beehive, several hundred of the bees quickly form a compact ball around the hornet to stop it. They don't sting, bite, crush, or..
A circuit connected to a 110V, 60-Hz source contains a 50Ω resistor and a coil with an inductance of 100 mH. Discover a) the power dissipated with the coil and b) compute the phase angle among the current and the applied voltage.
A superball of mass M and a marble of mass m are dropped from a height h with the marble just on top of the superball. A superball has a coefficient of restitution of nearly 1 (i.e., its collision is fundamentally elastic).
A 60Co source is labeled 4.00 mCi, but its present activity is found to be 1.85 x 107 Bq. (a) What is the present activity in mCi? (b) How long ago did it actually have a 4.00-mCi activity?
A 3kg dog jumps horizontally into a basket hanging from a mass less string. The basket weights 6kg, Find the initial velocity of the dog
A spring attached to the ceiling of an elevator is 10 cm long when nothing is hanging from it. It is 12 cm long when a certain mass is hanging from it and the elevator is at rest. If the elevator moves upwards at an increasing speed of 4m/s^2, how lo..
Two parallel plates of area 70cm2 are given charges of equal magnitudes 9.7*10-7 C however opposite signs. The electric field within the dielectric material filling the space among the plates is 2.1*106V/m. Compute the dielectric constant of the mate..
Metal sphere 1 has a positive charge of 7.00nC . Metal sphere 2, which is twice the diameter of sphere 1, is initially uncharged. What are the final charges on each sphere.
Calculate the magnitude and direction of the resultant electric force exerted on the charge at the lower left corner by the other three charges.
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