Physics, 17.12.2019 20:31 JoeyDoesMath2399
It's possible to boil water by adding hot rocks to it, a technique that has been used in many societies over time. if you heat a rock in the fire, you can easily get it to a temperature of 500∘c. if you use granite or other similar stones, the specific heat is about 800 j/(kg⋅k).if 5.0 kg of water at 10∘c is in a leak-proof vessel, what minimum number of 1.0 kg stones must be added to bring the water to a boil?
Answers: 1
Physics, 22.06.2019 11:30
Achlorine atom has 17 protons and 18 neutrons. what is its mass number? what is its atomic number?
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Physics, 22.06.2019 12:10
Ablock having mass m slides down an inclined plane. the force of friction between the block and the inclined plane is f, the block's weight is m g, and the normal force is n. (a) draw a free – body force diagram showing the forces acting on the block. (b) write down all relevant newton’s equations for a given situation.
Answers: 1
Physics, 23.06.2019 02:30
Find an expression for the electric field e⃗ at the center of the semicircle. hint: a small piece of arc length δs spans a small angle δθ=δs /r, where r is the radius. express your answer in terms of the variables q, l, unit vectors i^, j^, and appropriate constants.
Answers: 1
It's possible to boil water by adding hot rocks to it, a technique that has been used in many societ...
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