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2 years ago

Which of the foolwing best define net force?

Physics

1 answer:

DochEvi [55]2 years ago

8 0

Net force can be defined as the sum of force acting on an object in all the directions

.i.e Net force= F acting on a body at upward direction+ F at downward direction+ F at leftward direction+ F at rightward direction.

e.g if a body is at rest the sum of forces acting on body in all direction is zero

but if a body is moving its mean body is facing an unbalanced net force.

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Giving 25 points need help ASAP!

Bumek [7]

Answer:

i dont exactly know the answer but i do know the formula

Explanation:

1/ 1/R1 + 1/ R2+

4 0

2 years ago

How much heat would be absorbed by 75.20 g of iron when heated from 22 C to 28 C

Bumek [7]

Mass x SH x °C (or K) ΔT

= 75g x 0.45J/g/K x 6.0 ΔT

= 202.5 Joules of heat absorbed.

(202.5J / 4.184J/cal = 48.4 calories).

I guess that is the answer

8 0

2 years ago

Read 2 more answers

Help me please I only have a few minutes to get this doneplease and thank q

DIA [1.3K]

A: particles are more spread out in gas

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2 years ago

The distance between two charged objects is doubled. What happens to the electrostatic force between the two?a)It will double.b)

zzz [600]

Answer:

d) It will be cut to a fourth of the original force.

Explanation:

The magnitude of the electrostatic force between the charged objects is

$F=k\frac{q_1 q_2}{r^2}$

where

k is the Coulomb's constant

q1 and q2 are the charges of the two objects

r is the separation between the two objects

In this problem, the initial distance is doubled, so

r' = 2r

Therefore, the new electrostatic force will be

$F=k\frac{q_1 q_2}{(r')^2}=k\frac{q_1 q_2}{(2r)^2}=\frac{1}{4}(k\frac{q_1 q_2}{r^2})=\frac{1}{4}F$

So, the force will be cut to 1/4 of the original value.

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2 years ago

Observations of galaxies and clusters of galaxies indicate that about ____ percent of the matter in the universe is dark matter.

Setler79 [48]

All the stars, spheres and galaxies that can be perceived nowadays make up just 5 percent of the universe. The former 95 percent is prepared of stuff stargazers can't see, notice or even understand. These secretive substances are called dark energy and dark matter. Experts determine their presence grounded on their gravitational influence on what little bits of the universe can be perceived.

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2 years ago