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Water at 22.0 °C is sprayed onto 0.203 kg of molten gold at 1063 °C (its melting point). The water boils away, forming steam at 100.0 °C and leaving solid gold at 1063 °C. What is the minimum mass of water that must be used?
Charge is scattered uniformly throughout a long cylindrical shell of inner radius R and out radius 2R. At what radius is the electric field equal to one-half the value on the outer surface.
In addition, the snow exerts a retarding force on the sled that points opposite to direction of motion, and has a magnitude of 57 N. Find out the acceleration of the sled and child.
A typical large orb spider has a mass of 0.50 g. If this spider suspends itself from a single 12-cm-long strand of silk, by how much will the silk stretch
How does the decrease in gravitational potential energy of a falling ball compare to its increase in kinetic energy.
A 528 Hz sound wave travels through a substance. What is the speed of sound in the substance
A 15m uniform ladder weighing 500 N rests against a frictionless wall. The ladder makes 60 angles with the horizontal.
An unstrained horizontal spring has a length of 0.34 m and a spring constant of 240 N/m. Two small charged objects are attached to this spring, one at each end. The charges on the objects have equal magnitudes. Because of these charges, the spring..
A heater coil connected to a 240 Vrms ac line has a resistance of 34 Ohms. find min values of the instantaneous power
Two circus performers, Jack and Jill, whose total mass is 120 kg, start a swing which is 5 m long such that initially the rope attached to their swing makes an angle of 36 degrees with the horizontal.
An object with a mass of 5.00 g is moving to the right at 14.0 cm/s when it is overtaken by an object with a mass of 28.0 g , determine the speed of each object after the collision
Two 9cm diameter charged disks face each other, 25cm apart. Both disks are charged to - 80 nC.
A 0.060 kg handball is thrown straight toward a wall with the speed of 14 m/s. It rebounds straight backward at a speed of 6.5 m/s. If the ball is in contact with wall for 3.0 ms, what average force is exerted on the wall by the ball.
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