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A 40 g block of ice is cooled to -75°C and is then added to 590 g of water in an 80 g copper calorimeter at a temperature of 23°C. Decide the final temperature of the system consisting of the water, ice, and calorimeter. Remember that the ice should first warm to 0°C,melt, and then continue warming as water. The specific heat of ice is 0.500 cal/g ·°C = 2090 J/kg°C.
A satellite is placed in a circular orbit about Earth with aradius equal to 51% the radius of the Moon's orbit. What is its period of revolution in lunar months
a particle falling under gravity is subject to a retarding force proportinal to its velocity. find its position as a
A 730-N man stands in the middle of a frozen pond of radius5.0 m. He is unable to get to the other side because of a lack offriction between his shoes and the ice. How long does ittake him to reach the south shore
Assume the following waves are propagating in air. Calculate the wavelength for gamma rays of frequency f_1= 7.40×1021 Hz
A large window measures 1.7 m by 2.9 m. At what rate will heat be conducted through the window when the room temperature is 26 C and the outside temperature is -2 C if the window instead has a double pane of glass (a "thermopane"), in which each pane..
The difference in potential between the accelerating plates of a TV set is about 26000 V. If the distance between these plates is 1.5 cm, find out the magnitude of the uniform electric field in this region.
A 6.00V lantern battery is connected to a 11.1OMEGA lightbulb, and the resulting current in the circuit is 0.388A. What is the internal resistance of the battery
in a womens 100-m race accelerating uniformly laura takes 2.00 s and healan 3.00 s to attain their maximum speeds which
What is the magnitude of the magnitic filed.
an 88 g arrow is fired from a bow whose string exerts a force of 110 N on the arrow over a distance of 78 cm. what is the speed of the arrow as it leaves the bow
A revolutionary war cannon, with a mass of 2270 kg, fires a 16.5 kgball horizontally. The cannonball has a speed of 137 m/s after it has left the barrel.When the cannon was free to move across the ground (ignorefriction), the velocity of the canno..
question1the relatively high resistivity of dry skin about can safely limit the flow of current into deeper tissues of
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