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A 100g cube of ice at 273k is dropped into 1kg of water that was originally at 353k. what is the final temperature of the water after the ice has melted?
An object of interest is 3 mm from an objective for a compound microscope with a lens power of +250 D. what is the magnifying power of the eyepiece
A brave child decides to grab on to an already spinning merry-go-round. What is the moment of inertia of the merry-go-round with respect to its central axis
Heat flows into an ideal gas at a constant volume. The pressure increases from 1.5 atm to 5.5 atm. What is the total heat flow of the process
A 1.91-kg solid sphere (radius = 0.130 m) is released from rest at the top of a ramp and allowed to roll without slipping. What is the translational and kinetic energy
An electric dipole has opposite charges of 5.0x10^-15 C separated by a distance of .40mm. Determine the magnitude of the torque exerted on the dipole by the electric field
A student sits on a freely rotating stool holding two weights, each of mass 2.90 kg. When his arms are extended horizontally, Find the new angular speed of the student
a child on a swing set swing back and forth if the length of the supporting cables for the swing is 2.1 m long, what's acceleration does to gravity or oscillation
A thermos contains 159 cm3 of coffee at 93.7 °C. To cool the coffee, you drop two 13.2-g ice cubes into the thermos. What is the final temperature of the coffee
Short pulses of laser light traveling in the x-direction with a diameter of 1 mm are incident on a perfect mirror. The pulses are 10^-13 seconds long and have a repetition rate of 10 Hz, each with an energy of 1 mJ.
Draw a free-body diagram for the instrument during this time.(Assume that the space ship is accelerating upward. ) Find the force that the wire exerts on the instrument.
Two objects moving toward each other collide and rebound. Determine the change in kinetic energy of the smaller object
A rocket, away from all gravitational forces, accelerates upward at an acceleration of 12.8m/s^2. On its main deck is a crate with a mass of 81.6kg. How many forces act on the crate
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