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A 240 g piece of ice at 0°C is placed in 510 g of water at 23°C. The system is in a container of negligible heat capacity and is insulated from its surroundings.
(a) What is the final equilibrium temperature of the system?
(b) How much of the ice melts?
A wheel is disconnected from a motor and come to rest from 14,000 rpm because of a 0.90 m·N frictional torque. How many revolutions has the wheel turned before coming to rest
To stretch a certain spring by 2.50cm from its equilibrium position requires 9.00J of work, What was the maximum force required to stretch it by that distance
A massless frictionless pulley, an ideal string, and two masses (m1 = 2.50 kg and m2 = 4.00 kg) are connected together, What is the magnitude of the tension force in the string
She pumps the handle up and down, slowly lifting the car. What is the force exerted on the small piston during each downward stroke?
A converging lens with a focal length of 89.0cm forms an image of a 3.25cm -tall real object that is to the left of the lens. Where are the object and image located in relation to the lens
A small monkey is traveling along a branch, What is the max speed of the monkey during this interval? Show all calculations
A monatomic ideal gas containing 7.95 moles at a temperature of 235 K are expanded isothermally from a volume of 1.23 L to a volume of 4.44 L. Calculate the heat flow into or out of the gas
An electron beam is deflected upward through 3.23 mm while traveling in a vacuum between two deflection plates 11.6 mm apart, What is the kinetic energy of each electron when it leaves the space between the plates
You have been given 2.2019195 g of copper from which you are to fashion a wire whose resistance is 1.7423174 ohms. What will the diameter of the wire be that you fashion
A 2.0cm×2.0cm×6.0cm block floats in water with its long axis vertical. The length of the block above water is 1.0cm
on a hot day a house is kept cool by an air conditioner. The outside temperature is 32 degrees celsius and the inside temperature is 21 degree celsius. what is the mechanical power that it requires to hold the inside temperature constant
A helium-neon laser emits light of wavelength 632.8 nm and has a power output of 13 mW. How many photons are emitted per second by this laser
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