Physics, 18.03.2021 03:40, rachellynn02
Example 2: Calculating Time from Power
A typical healthy adult human can provide 150 W of output power. You have
to push a 65 kg box of cereal (at rest) along the floor, and the coefficient of
friction with the floor is 0.37 (your shoes have a coefficient of friction of 0.84
with the floor). How much time should it take you to push it 3 m along the
floor at maximum power? Assume you push at constant speed after initially
starting to move it.
Answers: 3
Physics, 21.06.2019 15:00, rafrod75
If this plastic cup is heated to its melting point, what will eventually happen to all the particles in the plastic? a. the particles will begin to move enough that they slide past each other. b. bonds will form and the liquid will become a solid. c. the spaces between the particles will get smaller. d. the particles will change state and become a crystalline solid.
Answers: 2
Physics, 22.06.2019 19:30, 27lcasselberry
Which of these has some mechanical energy? a. an atom b. heat inside earth c. a book on a shelf d. the fire from a lit match
Answers: 1
Physics, 23.06.2019 10:00, thicklooney
The molecular weight of oxygen gas (o2) is 32 while that of hydrogen gas (h2) is 2. prove that under same physical conditions, the velocity of sound in hydrogen is four times that in oxygen
Answers: 1
Example 2: Calculating Time from Power
A typical healthy adult human can provide 150 W of output po...
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