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Consider a particle of radius s that orbits a solar mass star at 1 au on a circular orbit. the particle's velocity relative to the gas disk is nVk where Vk is theKeplerian velocity and n=5X10^-3. (recall that this velocty differential arises because gas, but not particles, is partially supported against gravity by s radial pressure gradient). The density of gas in the disk is 10^-9 c/cm^3=10^-6 kg/m^3.
A) Calculate the mass of gas that the particle collides with during one orbit about the star.
B) Assuming particle density of 3 g/cm^3, calculate the radius of a particle that collides with its own mass of gas during one orbit.
Given two vectors A? = 4.00 i^+ 7.80 j^ and B? = 5.60 i^? 2.00 j^ , find the scalar product of the two vectors A? and B?. Find the angle between these two vectors
A camera has a lens with a focal length of 29.4 cm. When an object is placed 3.95 meters away is being photographed, how far from the film should the lens be placed
At a factory, a noon whistle is sounding with a frequency of 491 Hz. As a car travelling at 78 km/h approaches the factory, the driver hears the whistle at frequency fi. After driving past the factory, the driver hears frequency ff. What is the chang..
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In a vacuum, two particles have charges of q1 and q2, where q1 = +3.66 ?C. They are separated by a distance of 0.213 m,
Each driver has a mass of 60.00 kg. Including the drivers, the total vehicle masses are 880 kg for the car and 4080 kg for the truck. The collision time is 0.120s. select coordinates such that the truck is initially moving in the positive x direction..
A viewing window in the Atlanta aquarium is 51 inches wide and 54 inches high. what is the outward force on the window
A child slides down a slide with a 23° incline, Calculate the coefficient of kinetic friction between the slide and the child
A bicycle and rider have a combined mass of 100 kg. How many calries of heat are generated in brakes when the bicycle comes to a stop from a speed of 36 km/h.
A 70 kg object is being pulled up a slope of 35 degrees with the horizontal so that the rope is parallel to the slope. what is the magnitude of the force pulling the block
What is the length of the greatest and thinnest string that can be located under a tension of 860 without breaking .
A transformer has 5.00 E4 turns in its primary coil and 7.00 E3 turns in its secondary coil. find the rms current in the primary coil
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