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When moving a convex lens toward and away from your eye, it reaches a point where the entire lens appears to be a single color. Why? What is this point called?n
The coefficient of performance of a refrigerator is 3.4. The compressor uses 20 J of energy per cycle. How much heat energy is exhausted per cycle
Water is pumped steadily out of a flooded basement at a speedof 5.5 m/s through a uniform hose of radius 1.1 cm. What is the power of the pump
A time-dependent force, Fvecbold = (7.50i hat bold ? 4.05tj hat bold), How far is the object from its initial position when its speed is 15.0 m/s
Consider NH3 vapor acting as a van der Waals gas with coefficients a = 4.169 atm-L2-mol-2 and b = 0.0371 L-mol-1. How much heat must be added to 50.0 g of the gas so that it experiences no change in internal energy as it undergoes isothermal reversib..
A mountain climber, in the process of crossing between two cliffs by a rope, pauses to rest. She weighs 521 N. As the drawing shows, Find the tensions in the rope to the left and to the right of the mountain climber
10-kg block is connected to a 40kg block.The horizontal surface on which the blocks slide is not frictionless and assume both blocks are made out of same material. a force of 50 N pulls the blocks to the right and produces an acceleration of 1/2 m..
A particle with a mass of 3.65×10?24 kg and a charge of 6.40×10?19 C starts at rest and is accelerated for a distance of 0.0800 m through a uniform electric field having strength E = 7.25×104 N/C
A circular surface with a radius of 0.059m is exposed to a uniform external electric field of magnitude1.58*104 N/C. The electric flux through thesurface is 80 N · m2/C. What is the angle between the direction of the electric field andthe normal to t..
A mass m = 3 kg is hanging from an ideal string which is passed over a fixed, frictionless pulley and then is attached to the upper end of a vertical spring whose lower end is fixed to the floor. What is the maximum stretch of the spring
mass-spring system can oscillate with simple harmonic motion because a compressed or stretched spring has which kind of energy.
The resistance of a bagel toaster is 14 ?. To prepare a bagel, the toaster is operated for one minute from a 120-V outlet. How much energy is delivered to the toaster
A proton (mass 1 u) moving at 5.40 *10^6m/s collides elastically and head-on with a second particle moving in the opposite direction at 2.60 106 m/s. Find the mass and final velocity of the second particle
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