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When the Sun evolves to the red giant stage its radius may increase to as high as 100 solar radii. Using the expression density = Mass/volume, and assuming the mass doesn’t change, by what factor does the Sun’s density change when it expands to the red giant stage?
If the light from the spotlight strikes the mirror at an angle to the normal, what angle to the normal would you expect for the reflected rays.
Two charges are brought together until they are 90.0cm apart, causing the electric force between them to increase by a factor of exactly 6. What was their initial separation distance
Find out the precession period of the axis
A copper cup of mass 0.300 kg contains 1.00 kg of water at 315 K. It is cooled so that the temperature decreases by 2.50 K each minute. What is the rate of removal of thermal energy in watts
An ideal gas expands isothermally, performing 4.30×103J of work in the process. Calculate the heat absorbed during this expansion
The greatest ocean depth yet discovered is the Marianas Trench in the western Pacific Ocean. A steel ball released at the surface requires 64 min to reach the bottom. The ball's downward acceleration is a=0.9g-cv, where g=9.81 m/s^2, and the constant..
Multiple Concept Example 4 and Interactive LearningWare 6.2 review the concepts that are important in this problem. What is the final speed of the probe
A satellite circles a spherical planet of unknown mass in a circular orbit of radius 1.9 x 10^7 m. If the satellite circles the planet once every 2.1 h in the larger orbit, what is the mass of the planet
A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, What are the magnitude and direction of the electric field
A force vector has a magnitude of 577 newtons and points at an angle 43o of below the positive x axis. What is (a) x scalar component and (b) y scalar component of the vector.
A nucleus moving at 0.6c through the lab decys, emitting a photon in the forward direction. With what speed does the photon travel
q1. a hunter aims directly at a target on the same level 84.2m. if the bullet leaves the gun at a speed of 193 ms by
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