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lyudmila [28]
3 years ago
6

You travel 10 m north and then stop for lunch and

Physics
1 answer:
zaharov [31]3 years ago
8 0

Answer:

Zero

Explanation:

Displacement is a vector connecting the initial position with the final position of motion of an object.

In this case, we have the following motion:

10 m north

30 m north

40 m south

If we take north as positive direction and south as negative direction, we can identify each motion using the following displacement vectors:

d_1 = +10 m\\d_2 = +30 m\\d_3 = -40 m

So, the total displacement is:

d=d_1+d_2+d_3=10+30-40=0

Which means that the final position of the motion corresponds to the initial position.

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By looking at each ones texture. and maybe even color
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Where does the focal point of a convex mirror fall?
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C)at the vertex of the mirror
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The first Leyden jar was probably discovered by a German clerk named E. Georg von Kleist. Because von Kleist was not a scientist
skelet666 [1.2K]

Answer:

a) q = 4.47 10⁻⁵ C

b)     ΔV = 4.47 10⁴ V

Explanation:

A Leyden bottle works as a condenser that accumulates electrical charge, so we can use the formula of the energy stored in a capacitor

           U = Q² / 2C

         Q = √ (2UC)

let's reduce the magnitudes to the SI system

   c = 1 nF = 1 10⁻⁹ F

let's calculate

         q = √ (2 1 10⁻⁹-9)

         q = 0.447 10⁻⁴ C

         q = 4.47 10⁻⁵ C

b) for the potential difference we use

             C = Q / ΔV

            ΔV = Q / C

            ΔV = 4.47 10⁻⁵ / 1 10⁻⁹

            ΔV = 4.47 10⁴ V

8 0
3 years ago
The passengers are facing forward in the direction that the train is moving. What will happen to the passengers sitting on a tra
marysya [2.9K]

Passengers which are facing forward in the direction that train is moving, their bodies will move forward in application of sudden stop of train.

<h3>What is force of inertia?</h3>

Force of inertia is the force which acts in the opposite direction of the force of acceleration acting on the body.

Given infroamtion-

The passengers are facing forward in the direction that the train is moving.

The train comes to a sudden stop.

Lets see what happens step wise-

  • Here, the train in moving in the forward direction and the passengers are also facing forward in the direction that the train is moving.

  • Now the train comes to a sudden stop. By this sudden stop the train stops suddenly but all the object including the passengers is still travelling forward due to the inertia force.

  • Thus all the passenger will tend to move in the direction as they are still travelling.

Hence, passengers which are facing forward in the direction that train is moving, their bodies will move forward in application of sudden stop of train.

Learn more about the force of inertia here;

brainly.com/question/10454047

6 0
3 years ago
Suppose that volumes of four stars in the Milky Way are 2.7 x 1018 km3, 6.9 x 1012 km3, 2.2 x 1012 km3, and 4.9 x 1021 km3. What
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Answer:

The order is Star 3 < Star 2 < Star 1 < Star 4

Explanation:

Lets name the stars with their written order.

Star 1: 2.7 x 10^18 km3

Star 2: 6.9 x 10^12 km3

Star 3: 2.2 x 10^12 km3

Star 4: 4.9 x 10^21 km3

Star with lowest power of 10 has the least volume. Therefore, star 2 and star 3 would be the stars with least volume. Star 2's coefficient is better than Star 3. Thus, the order will be Star 3 < Star 2 < Star 1 < Star 4.

3 0
3 years ago
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