Physics, 30.11.2019 04:31 iamabeast51
You pour 250 g of tea into a styrofoam cup, initially at 80? c and stir in a little sugar using a 100-g aluminum 20? c spoon and leave the spoon in the cup. assume the specific heat of tea is 4180 j/kg? ? c and the specific heat of aluminum is 900 j/kg? ? c.
what is the highest possible temperature of the spoon when you finally take it out of the cup?
Answers: 2
Physics, 22.06.2019 13:40
An ideal otto cycle has a compression ratio of 10.5, takes in air at 90 kpa and 40°c, and is repeated 2500 times per minute. using constant specific heats at room temperature, determine the thermal efficiency of this cycle and the rate of heat input if the cycle is to produce 90 kw of power.
Answers: 2
Physics, 22.06.2019 16:40
An owl dives toward the ground with a constant velocity of 4.40 m/s at 53.0° below the horizontal. the sun is directly overhead and casts a shadow of the owl directly below it. what is the speed (in m/s) of its shadow on level ground?
Answers: 3
Physics, 22.06.2019 18:00
Can you receive a shock severe enough to prevent you from releasing the wire from an ordinary outlet with dry hands? a. no b. yes explain
Answers: 1
You pour 250 g of tea into a styrofoam cup, initially at 80? c and stir in a little sugar using a 10...
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