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A nebula?a region of the galaxy where new stars areforming?contains a very tenuous gas with 128 atoms/cm3.This gas is heated to 7459 K by ultraviolet radiation from nearbystars. What is the gas pressure?
A ball is thrown straight up in the air at an initial speed of 30 m/s. find the maximum height of the ball
a liquid of density 1.31 times 103 kgm3 flows steadily through a pipe of varying diameter and height. at location 1
An electron (charge=-1.6x10^-19C) is moving at 3x10^5 m/s in the positive x direction. What are the magnitude and direction the magnetic force on the electron
When a softball player swings a bat, she accelerates it from rest to an angular velocity of 10 rad/s in a time of 0.26792 seconds. What is the magnitude of the torque she applies to the end of the bat? Model the bat as a uniform rod of length 0.90 m ..
A 0.20-kg object is oscillating on a spring with a spring constant of k = 15 N/m. What is the potential energy of the system
A skater is initially spinning at a rate of 13.1 rad/s with a rotational inertia of 2.54 kg·m2 when her arms are extended. What is her angular velocity after she pulls her arms in and reduces her rotational inertia to 1.64 kg·m2?
A child is riding a merry-go-round which completes a revolution every 8.36 s. The child is standing 4.65 m from the center of the merry-go-round. Evalute the magnitude of the centripetal acceleration of the child?
The gravitational force between two electrons 1.00 m apart is5.42x10-71 N. Find the mass of an electron
You want to photograph a circular diffraction pattern whose central maximum has a diameter of 1.1. How far behind the pinhole should you place the viewing screen
A helicopter is ascending vertically with a speed of 9 m/s. At a height of 200 m above the Earth, a package is dropped from a window. How much time does it take for the package to reach ground.
At a total loss how to figure out this answer - If you are flying an aircraft at 250 KTAS (422.5 fps) at 15,000 ft stable flight and you wanted to perform a climb (Nose attitude greater than 60 deg) to zero airspeed, assuming constant drag, thrust an..
transverse pulses travel with a speed of 200 ms along a taut copper wire whose diameter is 1.50 mm. what is the tension
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