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Your task in physics laboratory is tomake a microscope from two lenses. One lens has a focal length of 2.4 cm, the other1.2 cm. You plan touse the more powerful lens as the objective, and you want the eyepiece to be 17 cm from the objective. I calculated the distance from the sample to the objective lens tobe 1.3 cm which is correct. What is the magnification of your microscope?
An electron with an initial speed of 342910 m/s is brought to rest by an electric field. What was the potential difference that stopped the electron
A 950-kg cylindrical can buoy floats vertically in salt water. The diameter of the buoy is 0.920 m. Calculate the additional distance the buoy will sink
A hunter aims directly at a target (on the same level) 89.1 away. At what angle should the gun be aimed so as to hit the target
In the figure, suppose that the separation between speakers A and B is 5.90 m and the speakers are vibrating in phase. They are playing identical 110-Hz tones, and the speed of sound is 343 m/s.
A large piece of cork weighs 0.295 N in air, he spring scale reads 0.903 N. Find the density of the cork
A computer disk is 8.0 cm in diameter. A reference dot on the edge of the disk is initially located at theta=45 degrees. The disk accelerates steadily for 0.50 s, reaching 2000 rpm, after those coasts at steady angular velocity for another 0.50 s.
A 0.70 × 103 kg sports car collides into the rear end of a 2.2 × 103 kg SUV stopped at a red light. calculates the speed of the sports car at impact
An airplane with a speed of 77.7 m/s is climbing upward at an angle of 45.5 ° with respect to the horizontal. Relative to the ground, determine the angle of the velocity vector of the package just before impact
Two parallel planar mirrors face each other. An object is placed between them at a distance x from one and 3x from the other. how far away are the second-order images from the object, in terms of x
A string 2.0 m long is held fixed at both ends. If a sharp blow is applied to the string at its center, What are the lowest three standing wave frequencies for this string
Since there is no accommodation and the implant allows for correct distance vision, a corrective lens for close work or reading must be used. calculate the power of the lens in the reading glasses
Two spheres, one with mass M, radius R, and the other mass 2M,radius 3R, are released from rest at a distance of 12R between their centers. What is the velocity of each sphere when they collide?
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