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A 21.0 ohm bulb is connected across the terminals of a 12.0v- battery having 4.50 ohm of internal resistance. What percentage of the power of the battery is dissipated across the internal resistance and hence is not available to the bulb?
An amusement park roller coaster starts out on a level track 50.0 m long and then goes down a 50.0-meter incline at an angle of 30° to the vertical. It then goes up a 20.0-meter ramp with an incline of 20° to the horizontal.
A convex spherical mirror has a radius of curvature of 10.6cm. Calculate the size of the image
An 845-N sled is pulled a distance of 173 m. The task requires 1.20 x 10^4 J of work and is done by pulling on a rope with the force of 142 N. At what angle is the rope held.
What is the rate of change entropy of the first reservoir.
Two 330 kg (733 lb) masses are separated by a distance of 4 m. Using Newton's law of gravitation, find the magnitude of the gravitational force exerted by one mass on the other
In a game of billiards, the cue ball is traveling eastward when it strikes a second ball that is initially at rest. What was the speed of the cue ball prior to the collision
An airplane is flying with a velocity of 92.0 m/s at an angle of 23.0 above the horizontal. How far from the dog will the suitcase land
A 10000 kg boxcar traveling at 16 m/s strikes a second boxcar at rest. The two stick together and move off with a speed of 6.0 m/s. What is the mass of the second car
The electric field between two equal but opposite point charges, at a point four-ninth the distance from the negative charge to the positive charge, is 4.39*10
What is kinetic energy of the shell
The sun radiates energy at a rate of 3.86*10^26 W. Its radius is 7.0*10^8m. what is the intensity of solar radiation at the top of the earths atmosphere
A 4-g bullet is fired into a 1.4-kg block that is resting on a table. After impact, What was the initial speed of the bullet?
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