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A child holds a candy bar 10.0 cm in front of a convex mirrorand notices that the image is only one-half the size of the candybar.
a) What is the radius of curvature of the mirror?b) Draw a ray diagram for this problem.
Sam, whose mass is 74 kg, straps on his skis and starts down a 67-m-high, 20 ^\circ frictionless slope. Find Sam's speed at the bottom using work and energy
q1. a person eats a dessert that contains 26o calories. this skin temperature of this individual is 38 degrees celsius
A bullet is fired through a board 13.5 cm thick, with a line of motion perpendicular to the face of the board. If the bullet enters with a speed of 387 m/s and emerges with a speed of 163 m/s, what is its acceleration as it passes through the boar..
How much current flows throughout the television.
A certain LCD projector contains a single thin lens. An object 29.5 mm high is to be projected so that its upright image fills a screen 2.52 m high. Find the focal length of the projection lens
q1. suppose a constant ratio of 13.60 counts per minute per gram of living matter. a sample of a petrified tree was
If a helium nucleus with a mass of 6.68 10-27 kg, a charge of +2e, how close will the helium atom come to the gold nucleus before it stops and turns around
A transformer has 330 primary turns and 1340 secondary turns. The input voltage is 120 V the output current is 15 A. What are the output voltage and input current
A hollow cylinder of mass 0.141 kg and radius 4.10 cm has a string wrapped several times around it, Find the acceleration of the cylinder
A charged particle is injected at 153 m/s into a 0.0747-T uniform magnetic magnetic field perpendicularly to the field. What is the charge-to-mass ratio of this particle
If 100 physics students each give off 100 W as they sit in the classroom taking an exam, estimate the temperature increase of the room during the hour-long test
A proton is accelerated from rest through 500. V. It enters a magnetic field of 0.300 T oriented perpendicular to its direction of motion. determine the frequency with which it moves around this path
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