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Rapid changes that are sometimes observed in stars might indicate that dynamical processes are taking place. From the timescales of such changes - usually oscillations with a characteristic period - we may roughly estimate the average density of the star. The sun has been observed to oscillate with a period of minutes, white dwarfs by periods of a few tens of seconds. Estimate the average density for the Sun and for white dwarfs.
an electron with velocity v 1x106 ms is sent between the plates of a capacitor where the electric field is e500 vm. if
A stone is thrown upward with an initial velocity of 6 m/s. What maximum height will the stone reach?
Two rectangular pieces of plane glass are laid one upon the other on a table. A thin strip of paper is placed between them at one edge, Find the angle of the wedge
Assume a black hole were to suck up a massive amount of surrounding oxygen and hydrogen. Would this ignite inside the black hole and turn it back into a star?
Light of wavelength 600 nm is used to illuminate generally two glass plates 5.0 cm in length that touch at one end and are separated at the other end by a wire of diameter 0.015mm. How many dark fringes appear along the total length of the plates?
you toss a protein bar to your hiking companion located 8.6 m up a 39 degree slope.a. determine the initial velocity so
1 a long cylindrical shell carries a uniform charge density. if there is 0.100 c per meter what is the volume charge
A quantity of ideal gas requires 800 kJ to raise the temperature of the gas by 10.0 K when the gas is maintained at constant volume. find the adiabatic gas constant of this gas
king arthurs knights use a catapult to launch a rock from their vantage point on top of the castle wall 15 above the
Two rocks are thrown off the edge of a cliff that is 15.0 m above the ground. The first rock is thrown upward, at a velocity of +12.0 m/s. The second is thrown downward, at a velocity of 12.0 m/s.
A movig particle encounters an external electric field that decreases its kinetic energy from 9130 eV to 7570 eV as the particle moves from position A to position B, Determine the charge of the particle
A parachutist and her parachuting equipment have the combined mass of 121 kg. Her terminal velocity is 5.30 m/s with the parachute open. Her parachute has a cross-sectional area of 35.80 m^2. The density of air at that altitude is 1.23kg/m^3. What is..
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