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The longest stuffed toy ever manufactured is a 420 meter snakemade by Norwegian children. Suppose a projectile is thrownhorizontally from a height half as long as the snake and theprojectile's horizontal displacement is as long as the snake. What would be the projectile's initial speed?
A dog pulls on a pillow with a force of 2.2 N at the angle of 40° above the horizontal. Find the x and y components of the force.
A girl walks 26 meters at an angle of 39° west of south. How far west of her starting point is she
In the game of billiards, all the balls have approximately the same mass, about 0.17 kg. The cue ball hits a stationary ball and deflects 30° from its original path. What is the speed of the cue ball after the collision
A typical coal-fired power plant burns 320 metric tons of coal every hour to generate 700 of electricity. What is the power plant's thermal efficiency
Two metal spheres are separated by a distance of 0.8 cm and a power supply maintains a constant potential difference of 770 V between them. what is the distance between the spheres at this time
During a ballet performance a ballerina leaps into the air. If the dancer leaped at 90 degrees, what was the dancers initial speed
A projectile is fired from the edge of a 10m high cliff at 10m/s and an angle of 30 degrees from the horizontal. what is the magnitude of the final velocity
A tennis player tosses a tennis ball straight up and then catches it after 3.40 s at the same height as the point of release. What is the maximum height (in m) the ball reaches
A 27 cm long solenoid, 1.8 cm in diameter, is to produce a 0.28 T magnetic field at its center. If the maximum current is 5.7 A, how many turns must the solenoid have
What is difference between conducting and nonconducting charged sphere
a 2 kg object attached to a horizontal string moves with constant speed in a circle on a frictionless horizontal surface. Find the radius of the circle
What percentage of the power of the battery is dissipated across the internal resistance and hence is not available to the bulb
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