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The far point of a nearsighted person is 7.4 m from her eyes, and she wears contacts that enable her to see distant objects obviously. A tree is 14.3 m away and 1.5 m high. (a) When she looks during the contacts at the tree, what is its image distance? (b) How high is the image formed with the contacts?
Can you explain the differences between elastic collisionand inelastic collesion with some examples? I dont fully understand law of coservation. can you givesome exaples about objects being conserved?
the electronic flash attachment for a camera contains a capacitor for storing the energy used to produce the flash. in
A toy train rolls around a horizontal 1.5-m-diameter track. The coefficient of rolling friction is 0.13. What is the magnitude of the trains angular acceleration
Two lenses, separated by a distance of 22.1 cm, are used in combination. The first lens has a focal length of +26.0 cm; the second has a focal length of -15.0 cm. What is the final image distances relative to the second lens
The 75 kg man is falling at 15 m/s! In an attempt to stop his fall, the brake shoe is pressed against the spinning pulley with a force of 1000 N. how long does it take to stop the man's fall
consider the process of accelerating a car from 0 to 60 miles per hour in 10 seconds versus 30 seconds.do both use the
A student doing part B of the experiment drops a ball from h0 = 100 cm, Find the fraction of Kinetic Energy lost in this collision
When spiking a volleyball, a player changes the velocity of the ball from 4.2m/s to -24m/s along a certain direction. If the impulse delivered to the ball by the player is -9.3kg . m/s, What is the mass of the volleyball?
A Styrofoam cup holding 135 g of hot water at 93°C cools to room temperature, 22.0°C. What is the change in entropy of the room
The drawing shows a laser beam shining on a plane mirror that isperpendicular to the floor. The beam's angle of incident is37.8°. The beam emerges from the laserat a point that is 1.10 m from the mirror and 1.80 m above the floor.
A 75.0 kg stunt man jumps from a balcony and falls 22.5 m before colliding with a pile of mattresses. what is the average force exerted by the mattresses on the stuntman
Two closely spaced circular disks form a parallel-plate capacitor. What are the diameters of the disks
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