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The distance between an object and the screen is 2.56 m. A converging lens of focal length 25 cm is placed used to cast the image of the object on the screen. Where should the lens be placed?
A transformer is designed to step down the 209 volts to 30 volts. If there are 446 turns on the input coil, how many turns should there be on the output coil
A wooden block is pulled 12 m across a frictionless surface using a rope. What angle does the rope make with the horizontal
A source emits sound uniformly in all directions. A radial line isdrawn from this source. On this line, determine the radialpositions of two points, 1.28 m apart, such that the intensitylevel at one point is 2.46 dB greater than that at the other.
You throw a 5-kg ball from a platform (releasing the ball at a height of 5 m) with a speed, 10 m/s, at an angle of 30° with respect to the horizontal. Find the total speed of the ball when it hits the ground
A student tries to raise a chain consisting of three identical links. Each link has a mass of 0.360 kg. Find the force exerted by the top link on the middle link
A heat engine does 798.57 J of work per cycle while exhausting 163.83 J of waste heat. What is the engine's thermal efficiency in percent
A daredevil on a motorcycle leaves the end of a ramp with a speed of 33.0 m/s, what is the maximum height that he reaches
The current is increasing at a rate of3.2A/s in an RL circuit withR=4.00ohmsandL=360mH. What is the total potential difference across the resistor and inductor at the moment when the current in the circuit is 3.0 A?
An AC voltage of the form ?V = (85 V) sin (330 t) is applied to a series RLC circuit. If R = 42 ?, C = 29 µF, and L = 0.3 H, find the rms current in the circuit
A man pushes on a piano with mass 200 {rm kg} so that it slides at constant velocity down a ramp that is inclined at 18.3^circ above the horizontal floor. Ignore any friction acting on the piano.
A photon of red light (wavelength = 720 nm) and a Ping-Pong ball (mass = 2.00 × 10-3 kg) have the same momentum
Standing on a sidewalk, you notice that you are halfway between a clock tower and a large building. How far apart are the clock tower and the building
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