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Problem: Megan loves to make homemade ice cream! She decides she is going to make good old fashioned vanilla out of regular cream (500g) stored in her refrigerator at 4°C. She knows the freezing point of cream is -1°C, the the specific heat of cream is 0.998ca/gl, and that the latent heat of fusion of cream is . 80cal/glac
How much energy (in kcal) is lost by the cream when it is completely frozen and the ice cream comes to thermal equilibrium with Megan's freezer at -17°C?
A transformer with a turns ratio (secondary/primary) of 1:14 is used to step down the voltage from a 120-V wall socket to be used in a battery recharging unit.What is the voltage supplied to the recharger?
An object of mass 2.00 kg is oscillating freely on a vertical spring with a period of 0.540 s, Find the spring constant k and Find the unknown mass
If a diverging lens of focal length -69.0 cm is then placed 25.0cm from the first lens on the opposite side of the lens from the object, What is the magnification due to the two-lens system
A 5 gram bullet is shot through a 1 kilogram wood block suspended on a string 2 meter long. Determine the speed of the bullet as it emerges from block
A water pistol aimed horizontally projects a stream of water withan initial speed of 5.75 m/s. How far does the water drop in moving1.75 m horizontally?
A block of material has a mass of 80 kg and a volume of 4.1 10-2 m3. How much heat must be added to the block in order to increase its volume by 1.0 10-5 m3
What is the change in velocity from 1 second to 5 seconds? How much time did it take to change that velocity?
A hot air balloon is descending straight down at a constant speed of 5.00 m/s. What is the velocity of the pellet and of the balloon
A 1.56m tall student stands before a vertical mirror. She can just see her whole body, from head to toe. How tall is the mirror
Map out these voltage values and sketch a set of equipotential surfaces for V = -400V, -100V, 200V, 500V, 800V and 1100V.
(a) A D5/2 term in the optical spectrum of 39 19K has a hyperfine structure with four components. Find the spin of the nucleus. (b) In (a) what interval ratios in the hyperfine quadruplet are expected?
Why are norms necessary to society? What are informal norms and formal norms? Explain the concept thoroughly.
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