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Consider a star of mass M=10Msun, composed entirely of fully ionized C-12. Its core temperature is 6*10^8K. Suppose the star produces energy via the reaction C12 + C12 --> Mg24. the atomic weight of C12 is 12, and that of Mg24 is 23.985. What fraction of the star's mass can be converted into thermal energy?
A spaceship is measured to be 158 m long while at rest relative to the observer. what length does the observer measure
The position of the front bumper of a test car under microprocessor control is given by x(t) = 2.07 m + (4.50 m/s2)t2 - (0.100 m/s6)t6. Find its position at the first and second instants when the car has zero velocity
A person stands on a bathroom scale in a motionless elevator. When the elevator begins to move, the scale briefly reads only 0.66 of the person's regular weight. Calculate the acceleration of the elevator
A bartender slides a beer mug at 1.5 m/s towards a customer at the end of a frictionless bar that is 1.2m tall. how far way from the end of the bar does the mug hit
Use Coulombs' law and integration to find the electric field inside a hollow cylindrical shell with surface charge density ps and surface radius a
The block in the figure oscillates sinusoidally between x = +a and x = %u2212a. The coordinate is x(t) = a cos(wt). Calculate the maximum speed
A proton has a kinetic energy of 8.5 MeV. If its momentum is measured with an uncertainty of 4.0%, what is the minimum uncertainty in its position
An electric vehicle starts from rest and accelerates at a rate of 1.8 m/s2 in a straight line until it reaches a speed of 18 m/s. How far does the vehicle move from start to stop
if harry's dog weighs 25N and harry lifts him up to a height of 10 meters, how much work does Harry do
Calculate the speed of block at the instant the dielectric leaves the capacitor assuming it starts at rest and that the voltage across capacitor after the dielectric is removed is measured to be 200 V.
The hot reservoir of a heat engine is steam at 100?C while the cold reservoir is ice at 0?C. In 1.2hrof operation, 11kg of steam condenses, What is the power output of the heat engine
The total electric field consists of the vector sum of two parts. One part has a magnitude of E1 = 1300 N/C, Find the magnitude and direction of the total field
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