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A steel ruler is calibrated to read true at 17.5°C. A draftsman uses the ruler at 38.5 °C to draw a line on a 38.5°C copper plate. As indicated on the warm ruler, the length of the line is 0.403 meter. Find to what temperature should plate be cooled, such that the length of the line truly becomes 0.403 meter?
A spaceship travels at a constant speed from earth to a planet orbiting another star. When the spacecraft arrives, twelve years have elapsed on earth, and 9.2 years have elapsed on board the ship. How far away (in meters) is the planet according to t..
Scientists in a laboratory produce a sound wave in a simulated environment (air) with a velocity of 476 m/s
In exercise physiology studies it is sometimes important to determine the location of a person's center of mass. How far from the woman's feet is her center of mass
A slab of ice floats on a freshwater lake. What minimum volume must the slab have for a 45.0kg woman to be able to stand on it withoutgetting her feet wet
A solid steel ball and a tennis ball the same size are dropped at the same time. Find which ball has the greater force acting on it
The position of an object as a function of time is r? =(3.2t+ 0.90 t2)i^+(1.7t? 1.2 t2)j^m, Find the object's magnitude of the acceleration and What is the direction of the acceleration
The eye focuses by:
a particular satellite was placed in a circular orbit about 145 mi above earth.a determine the orbital speed of the
How much energy is dissipated during the 5 minute interval.
You fly your 20.0m -long spaceship at a speed of c/ 4 relative to your friend. determine the speed of your friend relative to you
A diving board oscillates with simple harmonic motion of frequency 3.23 cycles per second. What is the maximum amplitude with which the end of the board could vibrate in order that a pebble placed there not lose contact with the board during the o..
A vertical cylindrical tank contains 1.80 mol of an ideal gas under a pressure of 1.00 atm at 20.0oC. What is the mass of this piston
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