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An object is located 12 centimeter in front of a curved mirror. The magnification of the image is -3.0. Evaluate what is the focal length of the mirror?
A spring of negligible mass has force constant = 1500 . How far must the spring be compressed for an amount 3.10 of potential energy to be stored in it? Find the maximum distance the spring will be compressed
1. a hydraulic lift system can hold up t o 400000 n 80000 lbs. the maximum pressure in the system is 8000000 pa 1200
A 2.80 102 N force is pulling an 80.0 kg refrigerator across a horizontal surface. The force acts at an angle of 22.0° above the surface. The coefficient of kinetic friction is 0.200, and the refrigerator moves a distance of 7.00 m. (a) Find the work..
Two point charges Q1=+5.00 nC and Q2= -3.00 nC are separated by 35.0cm. (a) What is the electric potential at a point midway between the charges? (b) What is the potential energy of the pair of charges? What is the significance of the algebraic si..
it is found experimentally that the electric field in a certain region of earths atmosphere is directed vertically
Gamma-ray bursters are objects in the universe that emit pulses of gamma rays with high energies. What is the wavelength of the these gamma rays
A car comes to a bridge during a storm and finds the bridge washedout. The driver must get to the other side, so he decides to tryleaping it with his car. The side the car is on is21.5 m above the river,
You are piloting a spacecraft whose total mass is 1150 kg and attempting to dock with a space station in deep space. Assume for simplicity that the station is stationary, that your spacecraft is moving at 1.15 m/s toward the station, How long shou..
An airplane has a mass of 2.6 x10^6 kg, and the air flows past the lower surface of the wings at 95m/s. If the wings have a surface area of 1200m2, how fast should the air flow over the upper surface of the wing if the plane is to stay in the air?..
A comet moves about the Sun in an elliptical orbit, with its closest approach to the Sun being about 0.680 AU and its greatest distance from the sun being 38.5 AU. what is its speed when it is farthest from the Sun
a compute the order of magnitude of the mass of a bathtub half full of water. bathtub. assume the tub measures 1.3 m by
A playground is on the flat roof of a city school,6.00m above the street below. The vertical wall of the building is7.00m high, Find the speed at which the ball was launched
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