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The objective lens of the refracting telescope at the Lick Observatory in California has a focal length of 57 ft.
What is the refractive power of this lens?
What focal length (mm) eyepiece would give a magnification of 1000x for this telescope?
An m = 6.60-kg clay ball is thrown directly against a perpendicular brick wall at a velocity of 22.0 m/s and shatters into three pieces, What is the direction of the third piece
If a camera with a 60 mm lens is to resolve two objects that are 3.0 mm from each other and both objects are 4.0 m from the camera lens, What is the resolving power
A 0.60-kg object connected to a light spring with a force constant of 22.8 N/m oscillates on a frictionless horizontal surface. Determine the maximum speed of the object
A 200KeV electron (i.e., an electron having kinetic energy of 200KeV) collides with a 200KeV positron (a particle with opposite charge of electron but) moving in the opposite direction in a head-on collision.
q1. a brick is thrown upward from the top of a building at an angle of 45deg to the horizontal and with an initial
What is the force of air resistance. how high was the jump.
Two small silver spheres, each with a mass of 12.0 g, are separated by 1.00 m. Calculate the fraction of the electrons in one sphere
A man clearly see an object that is 2m away(or more) without glasses. if the glasses have a refractive power of +1.50D, how close can an object be to the eyeglasses
a catcher catches a 145 g baseball traveling horizontally at 36.0 m/s. How large an impulse does the ball give to the catcher, what average force did the ball exert on the catcher
Two air-track gliders of equal mass are initially moving in the same direction along a straight line. What is the speed of the second glider
An initially motionless test car is accelerated uniformly to 145km/h in 8.28s before striking a simulated deer. The car is in contact with the faux fawn for .815s, after which the car is measured to be traveling at 82.0km/h. What is the magnitude ..
A converging lens (f1 = 24.0 cm) is located 56.0 cm to the left of a diverging lens (f2 = -28.0 cm). How far is the object from the converging lens
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