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An unknown mass of silver is pulled from a furnace where its temperature was 900C and placed on a very large block of ice at 0.0C. Assuming that all the heat given up with the silver is used to melt 1.3 kg ice and not all the ice melts, what is the mass of thesilver? (Specific heat capacity of silver is 230 J/(kg K).
A 44-kg pole vaulter running at 11 m/s vaults over the bar. Her speed when she is above the bar is 1.0 m/s. determine her altitude as she crosses the bar
water at TL= 30 degrees celsius is used as a low temperature reservoir for an energy plant, what is the largest electrical output the enery plant delivers
vector r=(7.07(m/s)t)i+(7.07(m/s)t-4.90(m/s^2)t^2)j is the postition of a projectile as a function of time (the x-direction is horizontal, What is the Maximum height of the projectile
A particular heat engine has a mechanical power output of 6.00 kW and an efficiency of 28.0%, Find the energy taken in during each cycle
A radio station broadcasts with a frequency of 1000 kHz with apower of 89 kW. How many photons per second does the antenna emit
question1a painter of mass 140.0 kg stands on a platform of mass 55.0 kg and pulls on two ropes that hang over pulleys
Two identical coils are parallel to each other on the same axis. They are separated by a distance equal to their radius . They each have turns and carry equal currents in the same direction.
Block 2 (mass 1.30 kg) is at rest on a frictionless surface and touching the end of an unstretched spring of spring constant 259 N/m. The other end of the spring is fixed to a wall. Block 1 (mass 1.10 kg), traveling at speed v1 = 4.30 m/s, collides w..
A 0.40 kg mass, attached to the end of a 0.75 m string, is whirled around in a circular horizontal path. If the maximum tension that the string can with stand is 450 N, then what maximum speed can the mass have if the string is not to break?
A small airplane accelerates from rest at a constant acceleration of 1.2 m/s^2 along the runway. How long did this take
Two point charges, Q = +5.17 microC and q = -2.83 microC, are separated by r = 5.85 m. What is the electric potential energy?
A series RLC circuit has components with the following values: L = 22.0 mH, C = 86.0 nF, R = 25.0 ?, and ?Vmax = 100 V, with ?v = ?Vmax sin ?t. Find the resonant frequency of the circuit.
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