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The speed of an automobile traveling due to east is uniformaly reduced from 75.0km to 45.7km/h in a distance of 88.5m.
(A) What is the magnitude and direction of the constant acceleration?
(B) How much time elapsesduring this deceleration?
A small telescope has a concave mirror with a 4.00-m radius of curvature for its objective. Its eyepiece is a 4.25-cm focal length lens. What is the angle of its telescopic image?
A 1-kg wood ball and a 5-kg metal ball have identical shapes and sizes. They are dropped simultaneously from a tall tower. Each ball experiences the same drag force because both have the same shape.
A ball is dropped from rest from the top of a 6.30-m-tall building, falls straight downward, collides in-elastically with the ground, How many bounces can the ball make
A 4.0-kg object has a velocity of 4.0 m/s headed east. An explosion causes it to break up into two smaller 2.0-kg objects. what is the velocity of the other object after the explosion
The classroom temperature is 20 C. The relative humidity is 60%. What is the total humidity (kg of H2O vapor) in the room
Light of wavelength 540 nm is diffracted by a grating ruled with 1000 lines/cm. There are a total of 2000 lines in the grating. Find the angular deviation of the third order image.
When jumping straight down, you can be seriously injured if you land stiff-legged. In a stiff-legged landing he comes to a halt in 1.8 ms. Find the average net force that acts on him during this time
A couple is defined as two parallel forces, separated by a distance, that have equal magnitudes but opposite directions. A couple only produces a rotation in a specified direction. The moment produced by a couple is known as a couple moment.
What does halving the frequency of a wave do to the other properties of a wave, like speed, amplitude, wavelength, period, etc.) Describe what happens to the wavelength, frequency, and spped of a wave as it moves from glass to air.
question1as thermonuclear fusion proceeds in its core the sun loses mass at a rate of 3.64 109 kgs. for the duration of
A man wants to swim across a river that flows N to S at 5 m/s.He can swim at a speed of 7m/s. how far south did he travel
A 110 g copper bowl contains 130 g of water, both at 24.0°C. A very hot 370 g copper cylinder is dropped into the water, causing the water to boil, How much energy (in calories) is transferred to the water as heat
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