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3 years ago

Rahul sits in a chair reading a book. Which force is equal to the force Rahul exerts on Earth?

Physics

2 answers:

Mademuasel [1]3 years ago

8 0

The first opiton is the answer A)Rahul’s weight

swat323 years ago

3 0

the first opiton is the answer A)Rahul’s weight

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1) For a positive point charge, the lines radiate ………. . While, for a negative point charge, the lines converge …………. .

ch4aika [34]

Answer:

For a positive point charge, the lines radiate outwards, while for a negative point charge, the lines converge inwards.

Explanation:

A single point charges produces an electric field which has a radial shape.The sign of a charge determines the the direction of the field. In Positive charge have the direction of field is out of the charge and for negative charge, the direction of field is towards the charge.This behavior is in relation to how a positive test charge will experience in a field.

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3 years ago

Two students are standing on a fire escape, one twice as high as the other. Simultaneously, each drops a ball.

almond37 [142]

The second ball should strike at double the original t value

4 0

3 years ago

Which describes freefall

Sati [7]

A motion where gravity is the only force acting upon it

6 0

3 years ago

A small rubber ball is launched by a compressed-air cannon from ground level with an initial speed of 17.3 m/s directly upward.

elena-s [515]

Answer:

h=15.27m

Explanation:

Since at maximum height the vertical velocity must be null it's better to use the formula:

$v_f^2=v_i^2+2ad$

We will use this formula for the vertical direction, choosing the upward direction as the positive one, so we have:

$0=v_i^2+2ah$

$h=-\frac{v_i^2}{2a}$

which for our values is:

$h=-\frac{(17.3m/s)^2}{2(-9.8m/s^2)}=15.27m$

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3 years ago

Physicists often measure the momentum of subatomic particles moving near the speed of light in units of MeV/c, where c is the sp

maxonik [38]

Answer:

kg m/s

Explanation:

e = Charge = C

V = Voltage = $\dfrac{N}{C}m$

c = Speed of light = m/s

Momentum is given by

$\dfrac{MeV}{c}=\dfrac{e\times V}{c}\\\Rightarrow \dfrac{MeV}{c}=\dfrac{C\times \dfrac{N}{C}\times m}{m/s}\\\Rightarrow \dfrac{MeV}{c}=Ns\\\Rightarrow \dfrac{MeV}{c}=kg\times \dfrac{m}{s}\times s\\\Rightarrow \dfrac{MeV}{c}=kg\cdot m/s$

The unit of MeV/c in SI fundamental units is kg m/s

5 0

3 years ago