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The mass of a star is 1.470×1031 kg and it performs one rotation in 34.10 day. Find its new period (in days) if the diameter suddenly shrinks to 0.530 times its present size. Suppose a uniform mass distribution before and after.
Find the moment of inertia of a solid uniform sphere of radius R which has a spherical cavity of radius R/2. The spherical cavity is centered at a point R/2 from the center of the sphere. Take the axis of rotation to go through the center of the sphe..
in your opinion is the earth warming? to what extent do you believe this warming is a result of human activity?your
A wheel is disconnected from a motor and come to rest from 12,000 rpm because of a 1.10 m·N frictional torque. How long will it take to come to rest
a parallel-plate capacitor consists of two parallel square plates that have dimensions 1.0 cm by 1.0 cm. if the plates
Galaxies form by gravitational collapse of regions that are denser than average. Noting that the present day average mass density of the universe is ρ = 3 × 10-30 g/cm-3, estimate how long it takes for a galaxy to collapse.
You have an open rgan pipe and a closed organ pipe. The fundamental frequency of the open pipe is 300hz. The closed piped third harmonic is the same frequency as the open pipe second harmonic. What is the length of each pipe.
two gliders a and b with mass 0.50 kg and 0.30 kg respectively move toward each other at 2.0 ms on frictionless linear
A 56 kg pole vaulter running at 12 m/s vaults over the bar. Her speed when she is above the bar is 1.3 m/s. determine her altitude as she crosses the bar
The sun and solar system actually are not at rest in our milky way galaxy. what would be the mass of the galaxy
One trajectory that can be used to send spacecraft from Earth to Mars is an elliptical orbit that has Sun at one focus, its perihelion at Earth, Find the semimajor axis of the ellipse
a person with a remote mountain cabin plans to install her own hydroelectric plant. a nearby stream is 3.00 m wide and
q1. explain what causes the seasons that we experience in the temperate region of the northern hemisphere. do you have
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