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Water flows straight down from an open faucet. The cross-sectional area of the faucet is 1.90 x10-4 m2, and the speed of the water is 0.79 m/s as it leaves the faucet. Neglecting air resistance, determine the cross-sectional area of the water stream at a point 0.10 meter below the faucet.
When point charges q1 = +7.0 ?C and q2 = +6.6 ?C are brought near each other, Determine the distance between the charges
A wheel is rotating freely at angular speed 490 rev/min on a shaft whose rotational inertia is negligible. A second wheel, initially at rest and with 5 times the rotational inertia of the first, is suddenly coupled to the same shaft. (a) What is the ..
a 0.50 uF capacitor is charged to a 12V battery. How much electrical potential energy is stored in the capacitor
As a function of time, the velocity of the football can be written as. Calculate the average acceleration vector of the football
A circular radar operates at a frequency of 8 GHz and has a Diameter of 0.8 m. What is the angle at the half-power bandwidth
A man does 4,735 J of work in the process of pushing his 2.70 103 kg truck from rest to a speed of v, over a distance of 25.0 m. determine the horizontal force exerted on the truck
a a 171g sample of carbon from ancient wood is found to have an activity of 155.6 decaysmin. how many half lives have
A power supply maintains a potential difference of 81.5 V across a 1.01-k? resistor. What is the current in the resistor in milliamperes?
Your professor enters the dogsled race during winter break. To getstarted, he pulls his sled, a mass 80 kg with a force of 180N at 20degrees to the horizontal. Find a) the work he does b) the finalspeed of the sled after it moves 30s.
The rms current in an RL circuit is 0.28 A when it is connected to an ac generator with a frequency of 60.0 Hz and an rms voltage of 25 V. (a) Given that the inductor has an inductance of 170 mH, what is the resistance of the resistor? ? (b) Find the..
Batteries are rated in terms of ampere-hours (A · h). For example, a battery that can produce a current of 2.00 A for 3.00 h is rated at 6.00 A · h. At $0.0830 per kilowatt-hour, what is the value of the electricity produced by this battery
a meter stick is charged with 20 micro coulombs by placing it on a van de graff generator. assume that the charge is
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