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
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The act of moving from one place to another. a. locomotor b. aerobic c. stationary d. static
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Physics, 22.06.2019 05:00
Does work output exceed work input when a machine is used? a) yes, it does, as machines create energy. b) it depends on the type of machine used. c) no, it doesn’t, as machines are inefficient. d) no, it doesn’t, as machines cannot create energy.
Answers: 1
Physics, 22.06.2019 05:10
Waves are used in many practical applications to support work, entertainment, and health. one example is the use of ultrasound imaging to safely track the development of a growing fetus. what is a specific example of a practical application of waves in medicine, entertainment, safety, or other fields? provide a brief explanation of how the properties of waves are useful to that application.
Answers: 3
Physics, 22.06.2019 12:40
Question part points submissions used suppose that 2 j of work is needed to stretch a spring from its natural length of 26 cm to a length of 36 cm. (a) how much work is needed to stretch the spring from 28 cm to 32 cm? (round your answer to two decimal places.)
Answers: 2
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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