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Stars spend their time on the main sequence converting hydrogen into helium. There are two sets of reactions that can take place within a star, supporting the fusion process. Describe the two reaction chains or cycles used for hydrogen fusion and what determines which one a star will employ.
A 5 cm by 5 cm square loop of wire is rotating at 30 rpm in a uniform magnetic field of strength 3.0T. The direction of the field is perpendicular to the axis of rotation of the loop.
The Corvettte engine has a power output of 435hp. Its thermal efficiency is 27%. How much heat must be supplied to the engine per second
a 200g hockey puck is launched up a metal ramp that is inclined at a 30° angle. what vertical height does the puck reach above its starting point
A small puck of mass m=0.1kg moves in a circle of radius 0.3m on a table top; the puck is tied with a massless string to a tether at the origin. find the tension in the string at the end of one revolution
A 30 kg launching machine fires a 250 gram projectile horizontally at 100 m/s. What was the momentum of the machine
What is the rms current in an RC circuit if R = 29.1 k?, C = 0.820 µF, and the rms applied voltage is 120 V at 60.0 Hz? (in A) A: 9.27×10-4 B: 1.34×10-3 C: 1.95×10-3 D: 2.83×10-3 E: 4.10×10-3 What is the phase angle between voltage and current? (in d..
Calculate the energy needed to accelerate a spaceship with a mass m = 25 × 103 kg toa speed of 0.40c. Compare this number with the approximate annual energy usage ofEarth, 1021 J
A circuit that consists of a capacitor in series with a 50 ohm resistor draws 4 A from a 250-V(rms), 200 Hz power source. how much power would the circuit dissipate
You bike at 10.5 m/s directly away from your neighbor's trumpet sound and toward the sound of another neighbor's trombone, What frequency is the trombonist producing
When you lift a bowling ball with a force of 80.2 N, the ball accelerates upward with an acceleration a. Calculate the weight of the bowling ball
Two cars B and C approach car A in opp directions with a speed of 54 km/h each. At a certain instant, when the distance AB is equal to AC, both being 1km, B decides to overtake A before C does.
A proton and an electron are moving due east in a constant electric field that also points due east, Determine the magnitude of the acceleration of the proton and the electron
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