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A camera is focused on a group of people 3 m from the lens, wjocj jas a focal lenght of 50 mm = 0.05 m.
(a) What is the lens-to-film distance?
(b) What is the linear magnification?
(c) If the film height is 24 mm = 0.024 m, what is the maximum height of a person whose image can completely fit on the film?
A passenger on a stopped bus notices that rain is falling vertically just outside the window. Find the speed of the raindrops, given that the bus is moving with a speed of 17.2 m/s
Using a vernier caliper of least count 0.01 cm, the length of a cylinder is measured to be 3.76 cm, and its diameter 1.28 cm. 1-Find the volume of the cylinder. 2-Calculate the probable percent error in the length. 3-Calculate the probable percent..
Describe how a uniform electric field might be used to measure distance. Hint: In the parallel electrode arrangement, what parameter(s) varied with distance between the electrodes and what parameter(s) stayed constant?
A 98.0 kg hockey player skating at 2.12 m/s 32° S of W is body checked by an 87.0 kg opponent who is skating at 1.40 m/s 42° N of E. What is the velocity of the pair immediately after the collision
A solid sphere ( moment of inertia, I=2/5MR^2) is rolling smoothly with a speed of 6.0m/s pom a horizontal surface. How fast will the sphere be rolling
The Moon has one fourth of the diameter of the Earth with just 1.25 % of its mass. Calculate the gravitational acceleration on the surface of the Moon
On a dry day, just after washing your hair to remove natural oils and drying it thoroughly, run a plastic comb through it. Small bits of paper will be attracted to the comb. Explain why.
A piano wire with mass 2.65g and length 79.0cm is stretched with a tension of 34.0N. Calculate the average power carried by the wave
Suppose that a simple pendulum consists of a small 61 g bob at the end of a cord of negligible mass. find the pendulums maximum kinetic energy
A person with a weight of 222 lb stands on two feet with their weight equally distributed between the two shoes, compute the pressure on each shoe independently
A 96-kg man's thighbone has a relaxed length of 0.56 m, a cross-sectional area of 6.7 10-4 m2, By how much does the thighbone compress when the man is standing on both feet
A wire with mass 38.0g is stretched so that its ends are tied down at points a distance 78.0cmapart. What is the speed of propagation of transverse waves in the wire
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