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Decide the length of a copper wire that has a resistance of .172Ω and cross-sectional area of 1*10^-4 m^2. The resistivity of copper is 1.72 * 10^-8 Ω*m.
An RLC circuit consists of a 511 ? resistor, a 52 µF capacitor, and a 649 mH inductor, connected in series with a 123 V, 92.5 Hz power supply.What is the phase angle between the current and the applied voltage?
As you stand by a railroad track a train passes with its whistle blowing. As it passes, you hear a frequency shift equal to 24% of the frequency of the whistle. How fast is the train moving. Express your answer in km/hr. (Speed of sound is 331..
A plane flies 500 km east from city A to city B in 45.0 min and then 930 km south from city B to city C in 1.50 h. In magnitude-angle notation, what is the plane's displacement for the total trip
One of the concrete pillars that support a house is 2.5-m tall and has a radius of 0.50 m. The density of concrete is about 2.3 x 10^3 kg/m3. Find out weight of this pillar in pounds (1 N = 0.2248 lb)
In a science fiction movie, a 100 g base ball travelling with a speed of 60 m/s and an electron travelling at a speed of 1.2 x 10^7 m/s, What is the momentum of the base ball
In order better to map the surface features of the Moon, a 305-kg imaging satellite is put into circular orbit around the Moon at an altitude of 1.21 × 102 km. What is the Gravitational Potiential Energy
At what angle is the curve banked? The acceleration due to gravity is 9.8 m/s2.
The excess internal energy of metabolism is exhausted through a variety of channels, such as through radiation and evaporation of perspiration. find the rate at which you lose energy by exhaling humid air
the peak intensity of sunlight arriving at the upper atmosphere of the earth is around 1300wm2. the earth is situated
A spacecraft with a proper length of 250 m passes by an observer on the Earth. According to this observer, it takes 0.780 µs for the spacecraft to pass a fixed point. Determine the speed of the spacecraft as measured by the Earth-based observer. c
A man driving a car toward a large vertical wall sounds his horn. The car is traveling at 81 km/h. What is the frequency of the cars horn
Picture yourself in the castle of Helm’s Deep from the Lord of the Rings. You are on top of the castle wall and are dropping rocks on assorted monsters that are 16.15 m below you. Just when you release a rock, an archer located exactly below you s..
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