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A 284-kg motorcycle is accelerating up along a ramp that is inclined 30.0º above the horizontal. The propulsion force pushing the motorcycle up the ramp is 3410 N, and air resistance produces a force of 220 N that opposes the motion. Find the magnitude of the motorcycle's acceleration.
I once observed a woman on an airplane at night with a camera. As we flew low over Washington DC she was impressed with the view of the city lights in the dark. She stood back in the aisle and tried to take the picture by the window using her flash. ..
The current in the electron beam of a computer monitor is 415 ?A. How many electrons per second hit the screen
How much water must be displaced to float a cubical block of wood (density 655 kg/m^3) that is 15.0 cm on a side
To transmit only portions of an input wave lying on one side of an amplitude boundary, you would use a.
Then the driver sees a red light up ahead at next intersection, and starts slowing down at the constant rate. The car stops at the red light, 180 {rm m} from where it was at t = 0.
A nuclear power plant operates at 80% of its maximum theoretical (Carnot) efficiency between temperatures of 700°, how much exhaust heat is discharged per hour
A .18 F capacitor is fully charged and has a potential difference( ?V), across its terminals of 9.0 volts. It is connected in series to a 200? resistor, find the energy stored in the capacitor when its fully charged
A 1.6 mL syringe has an inner diameter of 5.8 mm, a needle inner diameter of 0.25 mm, and a plunger pad diameter (where you place your finger) of 1.0 cm. A nurse uses the syringe to inject medicine into a patient whose blood pressure is 140/100.
If the ball's speed just before impact is 100 m/s, what is the angular speed of the rod immediately after the collision.
A certain lightbulb has a tungsten filament with a resistance of 19.1 ? when at 20.0°C and 139 ? when hot, Find the temperature of the hot filament
The coefficients of friction between a block of mass 1.0 kg and a surface are ?s = 0.75 and ?k = 0.40. What is the magnitude of the frictional force
A string 1.50 m long will break if the tension in it exceeds 2X10^2N. How fast (in m/s) can a rock of mass 1.50 kg be whirled in a circular horizontal path if the string is not to break? Assume the rock moves on a smooth horizontal surface (No fri..
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