23) What is the magnitude of the electric field intensity at a point where a proton experiences an
1 answer:
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Answer:
3.92 N (straight down)
2.36 N (down, parallel to the plane)
Explanation:
The only force acting on the system is apparently that due to gravity. The mass of the system is the sum of the masses of the blocks, so is ...
0.20 kg + 0.20 kg = 0.40 kg
The force due to gravity is given by ...
F = ma = (0.40 kg)(9.8 m/s²) = 3.92 N . . . (straight down)
That force is acting straight down, so is at an angle with respect to the direction the blocks are constrained to move.
The force down the plane is (3.92 N)·sin(37°) ≈ 2.359 N . . . (down the plane)
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<em>Comment on the answer</em>
We have given two answers to the question, because in this frictionless system, the force acting normal to the plane of motion is irrelevant to the system dynamics. The question asked for the net force on the system, which is the force due to gravity, so we have given that magnitude also.
You can hear two students talking in the corridor first, then see them due to the speed of sound.
The speed of sound is the distance that sound energy will propagate per unit of time through a medium. At room temperature, the speed of sound in air is about 1125 ft/s (343 m/s).
The speed of sound varies from substance to substance in function of the material density, elasticity and temperature. Typically sound travels most slowly in gases (like air 343 m/s), faster in liquids (like water 1481 m/s) and fastest in solids (like iron 5120 m/s).
<h3>What is velocity?</h3>It is a physical quantity that indicates the displacement of a mobile per unit of time, it is expressed in units of distance per time, for example (miles/h, km/h).
Learn more about velocity at: brainly.com/question/3004254
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