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Maru [420]
3 years ago
10

Which of the following graphs represents constant positive acceleration

Physics
1 answer:
nika2105 [10]3 years ago
5 0
W, because as time is moving up at a consistent rate the speed is as well, creating the straight line.
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A radio has a 1.3 A current. If it has a resistance of 35 Ω, what is the potential difference?
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The downlink frequency is lower than the uplink frequency. True or False
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I think it is true

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The famous scientist Galileo Galilei did several experiments with sloping planes, which he rolled metal balls down so that he co
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Hi there!

The answer would be B. the slope of the plane.

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3 years ago
In an intergalactic competition, spaceship pilots compete to see who can cover the distance between two asteroids in the short-
pogonyaev

Answer:

a)  truc is C,  b) correct result is the B

Explanation:

As the speed of the competition is very high, for the judges the speed is

           v = d / t

           v = 3 109 m / 20

           v = 1.5 108 m / s

This is half the speed of light. For these high speeds we must use the relations of special relativity.

For the time          t = to γ

For distance         L = Lo / γ

                            γ = √ (1-v2 / c2)

Own time and distance (to and Lo) corresponds to the observer who is not moving the judges in this case

Let's look for the range value

                     γ = 1 / √ (1 - (1.5 / 3) 2) = 1 / 0.866 = 1.15

The time              t = 20 1.15 = 23 s

The distance       L = 3 10 9 /1.15 = 2.60 109 m

From these results we see that time increases and the distance is shorter.

Let's review the claims

A) False. It's the opposite

B) False

C) True. It is according to the result found

D) False.

In the nuclear fusion process, we will also use the special relativity that has a relationship between energy and mass

         ΔE = c² Δm

As in the process energy is released, for the law of conservation of the mass of energy to be fulfilled, the total mass of the products, He atom, must be reduced.

Therefore the correct result is the B

4 0
4 years ago
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