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A rock of mass 0.19 kg falls from restfrom a height of 12 m into a pail containing 0.30 kg of water. Therock and water have the same initial temperature. The specific heatcapacity of the rock is 1820 J/(kg·C°). Ignore the heatabsorbed by the pail itself, and determine the rise in the temperature of the rock and water.
A rifle is aimed horizontally at a target 54.0m away. The bullet hits the target 2.60cm below the aim point, What was the bullet's flight time
A 50.0 kg box is resting on a horizontal floor. A force of 250 N directed at an angle of 26.0 degrees below the horizontal is applied to the box. What is the minimun coeffiecient of static friction
A 10 kg crate (begins 3m off the ground) slides along a smooth horizontal frictionless surface at a constant speed of 4 m/s. What is the kinetic energy as it slides on the upper surface
I place a 250 g mass on a spring. When it has finished oscillating, the spring has extended from 30 cm to 55cm. How do I calculate how far it has extended from its equilibrium? For the 250 g mass, what is the force exerted by gravity on this mass? Wh..
The driver of a motorboat that can move at 10 m/s wishes to travel directly across a narrow strait in which the current flows at 5 m/s. At what angle upstream should the driver head the boat
Prior to the music CD, stereo systems had a phonographic turntable on which vinyl disk recordings were played. calculate the total number of rotations for the complete start-up
The plates of a cathode ray tube are parallel and are 5 mm apart. What is the acceleration of the electron
A 12.0-V battery remains connected to a parallel plate capacitor with a plate area of 0.284m2 and a plate separation of 4.14mm, What is the store energy in the capacitor
Steam enters a turbine at 1240 ?C and is exhausted at 82 ?C. What is the maximum eficiency of this turbine
A block is placed at the end of the frictionless ramp and is pulled up the ramp through a solid ball on the end of a string that passes over a frictionless pulley that does not affect the motion of the block or ball. The ramp is 3.40 meters long and ..
A star in a distant galaxy is located at a distance of 20 kpc from the center of that galaxy. What is the total mass of the dark matter in this galaxy
A cylinder 0.150 in diameter rotates in a lathe at 620. What is the tangential speed of the surface of the cylinder
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