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A thin stream of water flows smoothly from a faucet and falls straight down. At one point the water is flowing at a speed of v1 = 1.15 m/s. At a lower point, the diameter of the stream has decreased by a factor of 0.877. What is the vertical distance h between these two points?
A 56.0 resistor is connected in parallel with a 117.0 resistor. This parallel group is connected in series with the 27.0 resistor. The total combination is connected across a 15.0 V battery. What is the current of the 117 resistor? What is the power ..
A radio station broadcasts with a power of 50,000 watts. Estimate the average intensity of the wave at a distance of 50 km from the radio transmitting antenna
A 17 kg girl slides down a playground slide that is 3.1 m high. When she reaches the bottom of the slide, her speed is 1.3 m/s. what is the coefficient of friction between the girl and the slide
A heat engine operates in a Carnot cycle between 82.0°C and 345°C. It absorbs 20,000 J of energy per cycle from the hot reservoir, What is the mechanical power output of this engine
An RLC series circuit has R = 935? , L = 18.0mH , and C = 250?F. If the circuit is connected to a 110V rms power source at the resonance frequency, what's the average power consumption
A car travels at a constant speed around the circular track or a radius of 2.6 km. it goes around the track once in 360 seconds.
An 8.3kg crate is pulled 4.9m up a 30? incline by a rope angled 19? above the incline. What is the increase in thermal energy of the crate and incline
A boy coasts down a hill on a sled, reaching a level surface at the bottom with a speed of 6.9 m/s. how far does the sled travel on the level surface before coming to rest
For the following questions, express your answers in terms of q. (a) How much charge ends up on sphere C? (b) What is the total charge on the three spheres before they are allowed to touch each other? (c) What is the total charge on the three sphe..
An initially motionless car of mass 1000kg slides down from a height on a frictionless roller coaster track. What was the minimum height from which it was released
Air conditioners are rated by their coefficient of performance at 60F inside temperature and 96F outside temperature. What is the maximum possible coefficient of performance
Light rays in a material with index of refrection 1.25 can undergo total internal reflection, Find this material's index of refraction when the required critical angle is 67.9°
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