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A dentist's mirror is placed 2.4 cm from a tooth. The enlarged image is located 5.9 cm behind the mirror.
(a) What kind of mirror (plane, concave, or convex) is being used?
(b) Determine the focal length of the mirror.
(c) What is the magnification?
(d) How is the image oriented relative to the object?
A 50 g Super Ball travelling at 28 m/s bounces off a brick wall and rebounds at 18 m/s. A high-speed camera records this event. If the ball is in contact with wall for 5 ms, what is the magnitude of the average acceleration of the ball throughout ..
A silver wire has a cross sectional area A = 2.0 mm2. A total of 9.4 × 1018 electrons pass through the wire in 3.0 s. What is the drift velocity of these electrons
Young Jeffrey is bored, and decides to throw some things out of the window for fun. But since he is also very curious, he decides to do so in a controlled way.
A 5.0-kg object with a speed of 4.0 m/s collides head on with a 10-kg object moving toward it with a speed of 3.0 m/s. what is the post-collision speed of the 5.0-kg object
suppose a uniformly charged ring in the xy plane, centered at the origin. The ring has radius a and positive charge q distributed evenly along its circumference.
A section of copper transmission line carries a steady current of 265A and has resistance 0.82 ohem, Ignoring the energy needed to refrigerate the superconductor, how much energy will be saved in one year
Use this technique to find formula for the intensity of a sound, in terms of sound level and the reference intensity. There will be a quantity involved in the calculations. When you enter your answer, leave off the unit.
An x-ray tube is operated at 48200 V. Calculate the minimum wavelength of the radiation emitted by this tube
An automobile of mass 1500 kg moving at 25m/s collides with a truck of mass 4500 kg at rest. What is the final velocity of the car after the collision
A 2.0cm -tall candle flame is 2.0 m from a wall. You happen to have a lens with a focal length of 42cm, For each location, what is the height of the image
A group of people with total mass 1500 kg stands in a boat with mass 12,000 kg at rest in frictionless water. If the whole group walks 6.5 m from bow to stern, how much does the boat move in meters
a 150g bullet is fired from a rifle with a barrel of length 65cm the bullet starts from rest at one end of the barrel, find the speed of the bullet as it leaves the rifle
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