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When you take a bath, how many kilograms of hot water (36.4°C) must you mix with cold water (14.4 °C) so that thetemperature of the bath is 32.8 °C? The total mass of water(hot plus cold) is 183 kg. Ignore any heat flow between the waterand its external surroundings.
a 96 g piece of ice at 0.0degc is placed in an insulated calorimeter of negligible heat capacity containing 100 g of
A wagon is coasting at a speed vA along a straight and level road. When thirty-four percent of the wagon's mass is thrown off the wagon, parallel to the ground and in the forward direction, the wagon is brought to a halt. If the direction in which th..
A uniform 210N ladder rests against a perfectly smooth wall, making a 40.0 degrees angle with the wall. Find the normal forces that the wall exert on the ladder
A transformer with 120. turns in its secondary supplies 12. volts at 220. ma to a toy train. The primary is connected across a 120. V wall outlet. What power is delivered by the wall outlet
A ray of light enters an equilateral prism made of material with n=1.45 at angle of incidence theta. The internally refracted ray is parallel to the base of the prism. What is the angle of refraction for the ray leaving the prism?
A 100-g ice cube at 0 degrees C is placed in 650 g of water at25 degrees C. What is the final temperature of the mixture
A 0.15 kg baseball collides with a 1.0kg bat. The ball has a velocity of 40 m/s immediately prior to the collision. Estimate how fast the baseball is moving as it leaves the bat following the collision
An open train car, with a mass of 2130 kg, coasts along a horizontal track at the speed 2.41 m/s. The car passes under a loading chute and, as it does so, gravel falls vertically into it for 2.59 s at the rate of 489 kg/s. What is the car\'s speed af..
a double slit is illuminated with 656.3 nm light the screen is located 80 cm from the slits, calculate the fraction of the maximum intensity 0.6 cm from the central maximum
What equation is used to get the energy density between plates if we are given the electric field (V/m), area of capacitor (m^2) and separation of plates (mm)
two capacitors c1 and c2 with capacitors of 0.25 uf and 0.50 uf respectively are connected in parallel across on 80 volt circuit, what is the total charge stored in the capacitor
a car battery has a rating of 170 ampere-hours. this rating is one indication of the total charge that the battery can
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