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Find the change in gravitational potential energy of a 1.8 kilogram object which is displaced vertically a distance of 2.7 meters?
The first-order principal maximum produced by a grating is located at an angle of ? = 17.3 degrees. What is the angle for the third-order maximum with the same light
A child is looking at a beetle that is 25 millimeter (10 inches) away, with the unaided eye. Determine how much larger will the beetle appear
A cannon with mass of 2000kg fires a 10kg shell at an angle of 60 degrees above the horizontal. what is the velocity of the cannon ball
A movie camera with a (single) lens of focallength 75 mm takes a picture ofa person standing 34 m away. what is the height of the image of the person on the film
question how does water pressure one meter below the surface of a small pond compare with water pressure one meter
A student stands at the edge of a cliff and throws a stonehorizontally over the edge with a speed of 27 m/s. The cliff is 53 mabove a flat, horizontal beach as shown in the figure below. What are the coordinates of the initial position of the ston..
If the moving van left skid marks 49 meters long, and if the coefficient of kinetic friction is 0.69, determine the initial speed of the moving van
A high-speed lifting mechanism supports a 875 kg object with a steel cable 23.0 m long and 4.00 cm2 incross-sectional area. Determine the elongation of the cable
The pulmonary artery, which connects the heart to the lungs,has an inner radius of 2.8 mm and is8.2 cm long. what is the average speed of blood in the pulmonary artery
In order to view the craters of the Moon, you construct a refracting telescope from a lens with focal length 90.7 cm as its objective and a 11.5-cm focal length lens as its eyepiece
sometimes the laws of thermodynamics are summarized by saying1 you cant get something for nothing.2 you cant even break
Three equal point charges, each with charge 1.25 , are placed at the vertices of an equilateral triangle whose sides are of length 0.400. What is the electric potential energy of the system
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