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a) How many joules are required to change 0.650 kg of solid lead at 22.0 oC to a liquid at 1300.0 oC? (Assume the specific heats of both solid and molten lead to be the same.)
b) If the energy that goes into evaporating one kilogram of water from Lake Michigan at 10.0 oC were used instead to raise that amount of water above the surface of the lake, how high (in m) would it be lifted?
The front and rear sprockets on abicycle have radii of 9.00 cm and 5.10 cm, respectively. Theangular speed of the front sprocket is 9.40 rad/s. Find the linear speed (in m/s) of the chain as it moves between the sprockets
A series RCL circuit includes a resistance of 298 ohm, an inductive reactance of 648 ohm, and a capacitive reactance of 415 ohm. The current in the circuit is 0.634 Amps. What is the Voltage of the alternator?
a 3 kg mass is subjected ti multiple forces and remains motionless. the gravitational force pulls the mass downward. a
A bar magnet is oriented with its magnetic dipole moment at 39.5° to the direction of a 0.0689-T magnetic field, causing a torque of 0.00351 N·m to act on it
A 54.5 g ice cube, initially at 0°C, is dropped into a Styrofoam cup containing 363 g of water, initially at 21.2°C. What is the final temperature of the water
An ultrasound unit sends a 2.4 MHz sound wave into a 35cm long tube filled with an unkown liquid. What is the speed of the sound in the liquid
Rocket-powered sleds are used to test the human response to acceleration. If a rocket-powered sled is accelerated to a speed of 444 m/s in 1.8 seconds, then what is the acceleration and what is the distance that the sled travels?
A 55 kg woman cheats on her diet and eats a 602 Calorie (602 kcal) jelly donut for breakfast. If the human body is only 25% efficient in converting chemical energy to mechanical energy, how many stairs must the woman climb to work off her breakfas..
One end of a brass bar is maintained at 300°C, while the other end is kept at a constant but lower temperature. What is the temperature of the bar at a point 0.15 m from the hot end
The planet Uranus has a radius of 25560km and a surface acceleration due to gravity of 11.1m/s^2 at its poles. Calculate the mass of Uranus from the above data
A hydraulic jack is made with a small piston 1.1 cm in diameter that is used to move a large piston 5.3 cm in diameter. how heavy a load can he lift with the jack
A 3.3 block of wood sits on a table. A 3.0 bullet, fired horizontally at a speed of 480, goes completely through the block, emerging at a speed of 200 .What is the speed of block immediately after the bullet exits.
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