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A loudspeaker of mass 25.0 is suspended a distance of = 2.20 below the ceiling by two cables that make equal angles with the ceiling. Each cable has a length of = 3.70 . What is the tension in each of the cables?
You are called as an expert witness in the trial of a traffic violation. The facts are these: A driver slammed on his brakes and came to a stop with constant acceleration, How fast was he going when he hit his brakes
A light ray enters a glass slab at point A at an angle of 58.6° with respect to the surface normal, What minimum value for the index of refraction of the glass can be inferred from this
A movig particle encounters an external electric field that decreases its kinetic energy from 9130 eV to 7570 eV as the particle moves from position A to position B, Determine the charge of the particle
Dan is gliding on his skateboard at 2.0 m/s. He suddenly jumps backward off the skateboard, kicking the skateboard forward at 8.0 m/s. How fast is Dan going as his feet hit the ground? Dan's mass is 60 kg and the skateboard's mass is 5.0 kg.
A roller coaster goes 26 m along a section of track sloping 10 degrees below the horizontal, followed by a 15-m section sloping upward at 6 degrees, followed by an 18-m section of level track. Find the net displacement.
A 3800kg truck is parked on a 12 degree slope. How big is the friction force on the truck
The potential energy of a particle moving in the x-y plane is U=a/(x^2+y^2)^1/2, where a is a constant. What is the force on the particle
A flat sheet is in the shape of a rectangle with sides of lengths 0.400m and 0.600m. Find the magnitude of the electric flux through the sheet
You hit a 0.2 kg golf ball up at 40o from the horizontal. It travels for 4.86 s and stops on an elevated green 10 m above its initial height traveling down at an angle of 35.4o below the horizontal. What is the total impulse on the golf ball when ..
A capacitor consists of two closely spaced metal conductors of large area, separated by a thin insulating foil. Calculate the amount of energy stored in the capacitor
Electrons are accelerated through a voltage difference of 265 kV inside a high voltage accelerator tube. What is the final kinetic energy of the electrons
A space station is to provide artificial gravity to support long-term stay of astronauts and cosmonauts. It is designed as a large wheel, with all the compartments in the rim, how long should the motor fire
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