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1) How much heat is required to change 50 g of ice at 0 oC into liquid water at 0 oC? (Answer: 4000 cal) 2) If 350 g of water initially at 25 oC released the amount of heat that you found in Part (1), what would its temperature be afterward? (Answer: 13.58 oC)
3) If you were to combine 50 g of liquid water at 0 oC with 350 g of the water at the temperature you found in Part (2), what would the final temperature of the mixture be?
4) Now, if 50 g of ice at 0 oC is combined with 350 g of water initially at 25 oC, what is the final temperature of the mixture?
5) How much heat is needed to raise the temperature of 350 g of water initially at 25 oC to 100 oC?
6) If the heat absorbed by the water in Part (5) came from the condensation of steam initially at 100 oC, how much steam condensed?
A uniform density cube of mass m, side 2b, and center at C is placed on a fixed horizontal cylinder of radius r and center O in Earth's gravitational field. The cube is originally put so that C is centered above O, but it can roll from side to side w..
q1. a demented scientist creates a new temperature scale the z scale. he decides to call boiling point of nitrogen 0
A car with a mass of 1600 kg is initially traveling at 72 m/s. Find the energy required to stop the car
An 80 kg person climbs a set of stairs that are 5 meters high. How much gravitational potential energy does she gain
The pressure on a 1 L-sample of water is increased from 1 atm to 200 atm, reducing its volume by 1%. Draw the pressure-versus-volume graph for this process
A train is travelling up a 5.0 degree incline at a speed of 2.25m/s when the last car breaks free and begins to coast without friction. a) How long does it take for last car to come to rest momentarily? b) How far did the last car travel before mo..
A sound wave from a siren has an intensity of 92.5 W/m2 at a certain point, What is the intensity level of the sound wave due to the ambulance
A radio tower is broadcasting an isotropic radio wave with a power of 1000 watts. What is the radiation pressure on a reflecting surface 250 meters away from the tower
A sinusoidal transverse wave is traveling on a string. Any point on the string: Moves in the same direction as the wave. Moves in uniform circular motion with the same angular speed as the wave.
The index of refraction of crown glass is 1.515 for red light and 1.523 for blue light. Find the angle separating rays of the two colors in a piece of crown glass if their angle of incidence is 57
It is desired to compute a single line to estimate temperature as a function of time. One person suggests averaging the three slope estimates to obtain a single slope estimate, and averaging the three intercept estimates to obtain a single interce..
an alien spaceship traveling at a constant velocity of 13 in the x direction passes the earth call this event a at time
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