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Compute the average speed and average velocity of a complete round trip in which the outgoing 250 km is covered at 95 km/h, followed by a 1.0 hour lunch break, and the return 250 km is covered at 55 km/h.
If 3.00multiplied by10-3kg of gold is deposited on the negative electrode of an electrolytic cell in a period of2.73h, what is the current in the cell during that period
Block A has mass 1.20 kg and Block B has mass 2.9 kg. They are forced together, compressing spring S between them how much potential energy was stored in the compressed spring
The output stage of a high-fidelity amplifier has an internal impedance of 162 ohm. determine what must be the turns ratio of the output transformer for maximum power transfer
A spacecraft moving away from Earth emits a 4346 Hz signal. What is the speed of the spacecraft relative to Earth
A 67.0 kg diver is 4.90 m above the water, falling at speed of 6.40 m/s. Calculate her kinetic energy as she hits the water
The angle of incidence at a solid/liquid boundary is59.9°, and the index of refraction of the solid is n =1.52. (a) What must be the index of refraction ofthe liquid such that the direction of the light entering the liquidis not changed?
Is the force attractive or repulsive?
The local acceleration of gravity is 9.813 m/s 2 , and the atmospheric pressure is 101.57 kPa. a) What is the force (in Nt) exerted on the gas by the piston, the weight and the atmosphere combined
A spoon is raised 21.0 centimeter above a table. find the gravitational potential energy associated with the spoon
The human eye can detect light by an intensity as low as about10–9 W/m2. A typical large galaxy, such as our own Milky Way, radiates energy at the rate of about 4.*1036 W. What is the maximum distance from earth of a typical galaxy that can be seen w..
Monochromatic light with a wavelength of 362 nm passes through a single slit and falls on a screen 82 cm away. If the distance of the ?rst-order dark band is 0.49 cm from the center of the pattern, what is the width of the slit? Answer in units of cm
Consider a commemorative quarter-dollar advertised for sale at $4.98. It has a diameter of 24.3 mm, a thickness of 1.78 mm, and is completely covered with a layer of pure gold 0.149 µm thick.
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