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A spaceship requirements to change its course therefore that the magnitude of its momentum p remains the same but the direction changes by the angle α. If the ship's engines can exert a force F, determine what should be the minimum time for which the engines must be turned on, and in which direction should the engines be pointed?
(1) A circular wheel has a radius R = 0.45 + or - 0.02 m. The wheel is observed to be rotating uniformly with period T = 2.00 +or- 0.05 s. (i) Compute the frequency with which the wheel spins (ii) Compute the angular speed of the wheel. (iii) Comp..
Two boxes of mass 4.70 and 2.70 kg are in contact and are accelerated across a horizontal surface by an force of 28.24 N applied parallel to the surface and pushing on the lighter box. Find the acceleration of the two boxes
A laser (wavelength 600nm) passes through a 2.44mm circularapertue and hits a screen 1km away. What is the diameter of the spot on the screen
Saturn's moon Titan is the largest moon in the solar system. Its mostly-nitrogen atmosphere exerts a pressure of 1.60×105 Pa at the moon's surface.
There is a thick walled hollow cylinder (outer radius a, inner radius b). (z axis is the height of the cylinder) with its center located at the origin (x=0, y=0,z=0). Find the gravitational potential of the cylinder at point P located on X axis
Only about 5 % of the energy in the universe is composed of baryonic matter. Estimate the density of dark matter in the universe
A 1000 kilogram car traveling at a speed of 21 m/s skids to a halt on wet concrete where μk = 0.30. Determine how long are the skid marks
a 0.150 kg particle moves along an x axis according to xt -13.00 2.00t 4.50t2 - 3.50t3 with x in meters and t in
A car is rounding a curve with a radius of 12.0 m at 8.2m/s when it hits a slippery patch. What is the minimum coefficientof static friction between the car and the slick patch of road that will allow the car to round the corner safely?
Two balls are released simultaneously from a certain heightone is allowed to fall freely and other thrown with some horizontalvelocity. Will they hit the ground together
Consider a simple model for the interior of the Earth: there is a spherical iron core with constant mass density ?0 and radius a; outside the core is "rock" with constant density ?1. Use these values for the densities: ?0= 8.70×103 kg/m^3 and ?1= ..
A car traveling 80 km/h is 70 m behind a truck traveling 75 km/h. How long will it take the car to reach the truck? I have utilized a similar solution from the book (Physics by Giancoli, 6th edition) as a reference however doesn’t understand how they..
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