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An irregularly shaped object 10 long is placed with each end on a scale. If the scale on the right reads 67 and the scale on the left reads 87 , how far from the left is the center of gravity.
For a double-slit experiment, the inside edges of two 1.73-mm wide slits are separated by a distance of 1.35 mm. find the separation of the bright fringes on the screen
A hot-air balloon is rising upward with a constant speed of 2.68 m/s. When the balloon is 5.62 m above the ground, How much time elapses before the compass hits the ground
Find the magnitude of the acceleration a of a block as it slides down the incline without friction. You must use a coordinate system with horizontal x and vertical y
A 1.0 kg mass is connected to a spring with a spring constant of 9.00 N/m. find the maximum spring potential energy of the simple harmonic motion
A 600 Hz sound wave travels through a gas. If the wavelength of the sound is 0.4 m, what is the speed of sound in the gas
An iron brick measuring 200 mm / 20 cm / 0.05 m is submerged in pure water. (mass density 7860 kg/m^3/ weight 490 lb/ft/ specific gravity 7.86), What is the net force on the brick
The normal airflow over the Rocky Mountains is west to east. The air loses much of its moisture content and is chilled as it climbs the western side of the mountains. What is its temperature at the end of the descent
An air-hockey pucks floats across the table and bumps into a second puck, initially at rest. The first puck - mass 0.0250 kg - is moving initially due east at 5.50 m/s. Find the speeds of both pucks after the bump
Draw vectors indicating the normal force. suppose that the weight of the femur is negligible compared to the applied downward force.
A crate travels 30 m due to a constant force of 350 N. The friction can be neglected for the first 15 m. What is the final speed of the crate if it weighs 110 kg
A 0.50-kg croquet ball is initially at rest on the grass. When the ball is struck by a mallet, the average force exerted on it is 225 N. how long was the mallet in contact with the ball
X rays diffract from a crystal in which the spacing between atomic planes is .200nm. what is the angle of the first-order diffraction
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