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Goryan [66]
4 years ago
11

WILL GIVE BRAINLIEST!!!!!!!!!!!!!!!!!!

Physics
1 answer:
faust18 [17]4 years ago
8 0

Answer:

9)a

10) I think true

11)b

Explanation:

9)a. because it's told that the car is slowing down, the sum of the forces that are towards left, should be more than the ones that are towards right. if the car was gaining speed, "b" would have been correct. and if it was told that the car is moving without a change in the speed, "c" would have been correct.

10) if a moving object has a change of speed or direction, it would have an acceleration. now if a moving object experiences an unbalanced force, it'd either slow down, gain speed or change direction, and in all of the three possibilities it'd have an acceleration.

11) upward and downward forces are equal, and the sum of them would be 0N(because they have opposite directions). so they negate each other.

and the rightward force is 5N more than the leftward force. so the Net Force would be 5N.

-30+30-10+15=5N

if it is unclear or you need more explanation, ask freely.

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A free electron is moving with a velocity of 3 × 105 m/s. It strikes a stationary electron in a head-on elastic collision. The m
Gelneren [198K]

Answer:

After the colision, the stationary electron's momentum is given as:

P = 2.7328 x 10^(-25) kg m/s

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Explanation:

In an Isolated system, when an object moving at some velocity v collides head on with a stationary object of equal mass. There velocities are exchanged.

This means that the first electron will become stationary and the electron which was stationary initially will start moving at a velocity of 3*10^(5)m/s in the same direction as the first electron.

Post collision momentum of the stationary electron:

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7 0
4 years ago
Read 2 more answers
What is the current through an electric heater with a resistance of 38  when the potential difference is 240 V?
Zinaida [17]

\bf{ \underline{Given:- }}

\sf•  \: Resistance \:  (R)  \: = 38 \:  Ω

• \sf \:  Potential  \: difference \:  (V)   \: = 240  \: v

\bf{ \underline{To \:  Find:- }}

• \sf  \: The \:  current \:  through \:  an \:  electric  \: heater.

<h2>\bf{ \underline{ Solution :-}}</h2>

\bf  \red{•\: The  \: formula  \: of \:  Current  \: (I) =  \frac{V}{R}}

\sf \rightarrow I =  \frac{240}{38}

\sf \rightarrow I = 6.32

\sf \pink{Answer :-  \: The \:  current \:  through \:  an \:  electric  \: heater \: is \: 6.32 \: A.}

6 0
3 years ago
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