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A sheet of water of uniform thickness (h = 0.01 m) flows from the device shown in Fig. P5.68. The water enters vertically through the inlet pipe and exits horizontally with a speed that varies linearly from 0 to 10 m/s along the 0.2-m length of the slit. Determine the y component of anchoring force necessary to hold this device stationary.
The intensity of the sunlight that reaches Earth's upper atmosphere is approximately 1360 W/m2. Determine what is the average energy density
How long (in days) would the helium/neon laser have to operate to produce the same number of photons that the solid-state laser produces in 1.10x 10-11 s?
It is desired to magnify reading material by a factor of 2.21× when a book is placed 7.96 cm behind a lens. What is the power of the lens in diopters
Suppose0.430kg of water initially at39.0°C is poured into a 0.300 kg glass beaker having a temperature of 25.0°C. Calculate the final equilibrium temperature of the system
A boy with a mass of 55 kg is hanging from a spring with a spring constant of 240 N/m. With what frequency does the boy bounce up and down
A 120-V motor has mechanical power output of 3.00 hp. It is 80.0% efficient inconverting power that it takes in by electrical transmission in to mechanical power. Find the current in the motor.
A boy slides down a toboggan with an acceleration of 2.0 meter per second. If he starts at rest, obtain how far did she travel in 1.0 second
a red ball is thrown down with an initial speed of 1.3 ms from a height of 27.0 meters above the ground. then 0.5
A thin soap film (n = 1.32) suspended in air has a uniform thickness. At what angle of incidence will green light (λG = 562 nm) be most strongly reflected
When a 20 V emf is placed across two resistors in series, a current of 2.0A is present in all of the resistors. When the similar emf is places across the same two resistors in parallel , the current through the emf is a 10 A.
Sam, whose mass is 71kg , takes off across level snow on his jet-powered skis. What is Sam's top speed
A transformer has 4500 turns on a primary coil turns 30,000 turns on the secondary coil. If the secondary coil shows 2.5A of current under 400V and is 100% efficiency find the voltage and current of the primary coil If the new efficiency drops to ..
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