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1) A force of 2 N is applied to a stationary 5 kg block for 0.3s. What is the speed of the block after the force is applied?
2) A balloon is full of air. The air in the balloon has a mass of 3 g. The uninflated balloon has a mass of 15 g. All the air is released from the balloon at a rate of 10 m/s. What speed does the balloon have?
3) A train (500 kg) is moving down a track at 5 m/s. It moves toward a stationary train car (2000 kg). The 2 cars link together. What is their speed afterwards?
A 1.0cm * 1.0cm parallel-plate capacitor has a 2.0mm spacing. The electric field strength inside the capacitor is 1.3*10^5 V/m, What is the potential difference across the capacitor
A candle is placed 1.270m in front of a converging lens. The image of the object is focused on a screen 1.376m behind the lens. What is the magnification of the image
The ends of a 20cm long, 2.0cm diameter are maintained at 0°C and 100°C, What material is the rod made of
How long will it take until the sun has used up all the hydrogen atoms in the core (the central 10%)? That is, what is the main-sequence lifetime of the sun and compare the lifetime of the sun to the current age.
what is the magnitude FN at the highest point. The positive charges are arranged in a square. sides- .10 m the top right is 9 nC bottom right is 3 nC and the bottom left is 1 nC. find the magnitude of the electric field at the fourth corner of the ..
A golf ball strikes a hard, smooth floor at an angle of 24.7 ° and, as the drawing shows, rebounds at the same angle. compute the magnitude of the impulse applied to the golf ball
On a banked race track, the smallest circular path on which cars can move has a radius of 112 m, find the largest speed at which cars can move on this track without relying on friction
Find out the magnitude of its average acceleration between those points. Find the direction of its average acceleration between those points.
what is the magnitue of the magnetic field in the centre of a solenoid with a current of 1.25 A, Describe the right hand rule for solenoids
A compressed spring shoots the block radically outward along a frictionless groove in the surface of the turntable. Illustrate what is the turntable's rotation angular velocity when the block reaches the outer edge?
A pair of speakers separated by 0.700m is driven by the same oscillator at a frequency of 662Hz. An observer, originally positioned at one of the speakers, begins to walk along a line perpendicular to line joining the speakers. (Assume the speed o..
The surface temperature of the start Betelgeuse is 3500K. Assume Betelgeuse radiates as a perfect blackbody. what is the energy of each of these photons
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