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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 3 centimeter radius 120-turn coil of 12.5 ohm resistance rotates about a diameter in a uniform magnetic field of 0.13 T. find how much charge would it record when the coil is flipped
A missile of mass 1.05 x102 kg is fired from a plane of mass4.70 x 103 kginitially moving at a speed of 2.50 x102 m/s. If the speed of the missilerelative to the plane is 1.25 x103 m/s, what is the final velocity of the plane?
A person pushes a 16.2-kg shopping cart at a constant velocity for a distance of 27.5 m on a flat horizontal surface. She pushes in a direction 32.3 ° below the horizontal. A 35.3-N frictional force opposes the motion of the cart. (a) What is the mag..
One end of a stretched ideal spring is attached to an airtrack and the other is attached to a glider with a mass of 0.360. Find the magnitude of the maximum acceleration of the glider
A steel ball bearing 7.0 mm in diameter is dropped into a cylinder of glycerin. What is the terminal velocity of the ball bearing
Calculate the normal force on the bridge atpoint B (the right support). The accelerationof gravity is 9.8 m/s2. Answer in units of N
determine the weight of the collar.
A baseball pitcher can throw a fastball at a speed of ~150 km/hr. what is the largest size spherical asteriod of density p = 3 g cm^-3 from which he can throw the ball fast enough that it: a) escapes from the asteroid into heliocentric orbit?
a cannon barrel is elevated at an angle of 45deg. it fires a ball with a speed of 326 ms. for the following questions
Using a meter stick as a balance, a pivot is located at 30cm. a known mass of 412g suspended at 10cm, Calculate the mass of the unknown that keeps the mechanism balanced
A 72 kg man in a 5-kg chair tilts back so that all weight is balanced on two legs of the chair. Assume that each leg makes contact with the floor over a circular area with the radius of 1.0 cm, and find out the pressure exerted on the floor by eac..
A small button placed on a horizontal rotating platform with diameter 0.295 m will revolve by the platform when it is brought up to a speed of 30.0 rev/min, provided the button is no more than 0.132 m from the axis.
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