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Two blocks with masses M1 and M2 are released from the top of twofrictionless inclined planes of the same height making 30 and 60degree angles with the horizontal direction, respectively. Which of the blocks is going faster when it reaches the bottom of itsrespective incline?
When the block just touches the spring, how much gravitational potential energy has it lost? Give your answer as a positive number. After the mass has fully compressed the spring, what is its total loss of gravitational potential energy? Give your an..
The convex lens of a copy machine has a focal length of 25 cm. A letter to be copied is placed 40.0 cm from the lens.
An aircraft carrier has a speed of 16.4 m/s relative to the water. What is the frequency of the sound heard by the crew on the aircraft carrier
A car rounds a curve that is banked inward. The radius of curvature of the road is R = 139, the banking angle is ? = 31°, Find the minimum speed that the car can have without slipping
A dentist wants a small mirror that, when 3.00 cm from a tooth, will produce a 4.5X upright image. What must its radius of curvature be
Imagine holding an air-filled 2 L soda bottle (V = 2000 cm3) underwater. You have used a scale to determine that the mass of the soda bottle is mbottle = 50 g. what force is required to hold it underwater
A bowling ball of mass 2.7 kg and radius 9.5 cm rolls from rest, What is the speed of the ball at the bottom of the incline
a hammer slides down a roof that makes a 40 degree angle with the horizontal. what are the magnitudes of the components
at the science olympiad competition a group of middle school students uses a trebuchet that launches a tennis ball from
The sun produces its power from the conversion of mass into energy by Einstein's equation E=mc2 where c=3x10^8 mls. the sun's intensity on the earth is 1346W/m^2, find the rate at which mass is being converted to energy in the sun
an airplane diving at an angle of 54deg with the vertical releases a projectile at an altitude of 770 m. the projectile
A dog chasing a ball starts at rest and accelerates uniformly over a distance of 5 meters. It takes the dog 1 s to cover that first 5 m. What is the dog's acceleration, and what speed is the dog traveling when it reaches the 5 m point?
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