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A teapot with a surface area of 675 cm2 is to be plated with silver. It is attached to the negative electrode of an electrolytic cell containing silver nitrate (Ag+ NO3-). The cell is powered by a 12.0-V battery and has a resistance of 1.70 Ω. If the density of silver is 1.05 * 104 kg/m3, over what time interval does a 0.133-mm layer of silver build up on the teapot?
A 5-kg projectile is fired over level ground with a velocity of 200m/s at an angle of 25? above the horizontal. Just before it hits the ground its speed is 150m/s.Over the entire trip the change in the internal energy of the projectile and air is:
A ball is thrown upward from the ground with an initial speed of 23.90 m/s; at = same instant, a ball is dropped from a building 16 m high. After how long will the balls be at the same height.
A soccer ball with a mass of 448g bounces off the crossbar of a goal and is deflected upward at an angle of 56.2° with respect to horizontal. Immediately after deflection, the kinetic energy of the ball is 47.70 J. What are the vertical and horizo..
A thin metal plate is insulated on the back and exposed to solar radiation on the front surface. The exposed surface of the plate has an absorptivity of 0.7 for solar radiation.
it takes 4.0 j of work to move two charges from a large distance apart to 3.0 cm from one another. the charges have the
At the top of Earth's atmosphere, sunlight has an average intensity of 1350W/m^2. If the average distance from Earth to the Sun is 1.50x10^11m, at what rate does the Sun radiate energy?
a spring is mounted from the ceiling. as a mass is attached the spring stretches 1.04 m. the spring is then stretched
Two steel wires of the same length, one with radius r and the other with radius 4r, are connected together, end to end, and tied to a wall. How far does the point where the two wires meet move
One afternoon, a couple walks three-fourths of the way around a circular lake, the radius of which is 1.69 km. What is the distance they travel
Gas is confined in a tank at a pressure of 11.9 atm and a temperature of 23.0°C. If two-thirds of the gas is withdrawn and the temperature is raised to 76.0°C
A bar of circular cross-section is loaded by a compressive force P = 100 kN. The bar has length L = 2.0 m and diameter d = 30 mm. It is made of aluminum alloy with modulus of elasticity E = 73 GPa. What is the strain of the bar? Express the answer..
Consider a series circuit with the following elements: a 255 ohms resistor, a 50.0 mu/F capacitor, and a 107 mH inductor. What is the inductor%u2019s reactance Xl
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