Physics, 18.11.2019 19:31 Sprout7430
An object slides down a very smooth ramp, with negligible friction. it slides with constant acceleration a under the action of two forces: the supporting force n exerted by the ramp, and the force m g due to gravity exerted by the earth. what can you say about how the magnitude of n compares to the magnitude of m g?
1. n is less than m g.
2. their magnitudes are equal, as is almost always true on the earth’s surface.
3. none of these
4. n is greater than m g.
Answers: 2
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An electron is traveling with initial kinetic energy k in a uniform electric field. the electron comes to rest momentarily after traveling a distance d. (a) what is the magnitude of the electric field
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Physics, 22.06.2019 13:00
The magnitude of the amount of energy released by burning a fuel source, measured in energy per unit mass, is called its fuel value. note that the fuel value is the negative of the isobaric specific heat of combustion for the fuel. if all the energy obtained from burning 1.23 pounds of butane with a fuel value of 10.85 kcal/g is used to heat 128.0 kg of water at an initial temperature of 18.3 °c, what is the final temperature? note that 1 lb = 453.6 g.
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How much energy must a refrigerator absorb from 225 g of water so that the temperature of the water will drop from 35°c to 5°c
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Physics, 22.06.2019 17:30
Atruck driver is attempting to deliver some furniture. first, he travels 8 km east, and then he turns around and travels 3 km west. finally, he turns again and travels 13 km to his destination. what is the drivers distance
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An object slides down a very smooth ramp, with negligible friction. it slides with constant accelera...
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