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3 years ago

Like electric charges repel each other. Please select the best answer from the choices provided

Physics

2 answers:

alexdok [17]3 years ago

7 0

<span>Like electric charges repel each other. TRUE
I hope this helped :)</span>

g100num [7]3 years ago

3 0

Answer: Option (a) is the correct answer.

Explanation:

It is true that like charges repel each other because their line of force repel each other.

For example, when two positively charged ions are placed together then they tend to repel each other.

Whereas unlike charges attract each other.

For example, when we place a negative charge near a positive charge then the positive charge will readily get attracted to the negative charge because the line of force also attract each other.

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Josh starts throwing his pitch; we assume that his arm moves in a perfect circular arc, and his arm is 0.7 m long. If he needs t

harina [27]

As we know that centripetal acceleration is given as

$a_c = \frac{v^2}{R}$

here we know that

linear speed = 35 m/s

here radius of path is same as length of arm

R = 0.7 m

now from above above formula we have

$a_c = \frac{35^2}{0.7}$

$a_c = 1750 m/s^2$

so acceleration is 1750 m/s/s

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4 years ago

What is the magnitude of the free-fall acceleration at a point that is a distance 2R above the surface of the Earth, where R is

ss7ja [257]

Answer:

g' = g/9 = 1.09 m/s²

Explanation:

The magnitude of free fall acceleration at the surface of earth is given by the following formula:

g = GM/R² ----- equation 1

where,

g = free fall acceleration

G = Universal Gravitational Constant

M = Mass of Earth

R = Distance between the center of earth and the object

So, in our case,

R = R + 2 R = 3 R

Therefore,

g' = GM/(3R)²

g' = (1/9) GM/R²

using equation 1:

g' = g/9

g' = (9.8 m/s)/9

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3 years ago

The material or substance that a wave moves through is called a _______. The medium affects the speed of the wave that passes th

Step2247 [10]

It goes in this order. Medium, density, viscosity

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4 years ago

Read 2 more answers

On a planet with different gravity, would the molarity of water be different? explain your reasoning.

ruslelena [56]

On a planet with different gravity, the molarity of water won't be different as water produces regular natural gravity.

<h3>How to explain the gravity?</h3>

Although sunlight is the energy source, gravity is the main factor driving the water cycle. The Earth's gravity pulls matter downward and toward its center. Gravity is the force that attracts two objects. It pushes water downhill and precipitation from the clouds. Air and ocean water are also moved by gravity.

We understand that even if the gravitational pull varies throughout the universe, the molarity of water would be constant everywhere. This is thus because a substance's mass is unaffected by gravity; only its weight is. The quantity (or mass, indirectly) of a solute is used to calculate the molarity.

Here, on a planet with different gravity, the molarity of water won't be different as water produces regular natural gravity.

Learn more about gravity on:

brainly.com/question/557206

#SPJ1

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2 years ago

An object is dropped from an airplane and takes 72 seconds to hit the ground. What is the magnitude of its VF Y ?

Dafna1 [17]

The final vertical velocity of the object is 705.6 m

Explanation:

Here we have to analyze the vertical motion of the object, which is a free fall motion, with constant acceleration of

$g=9.8 m/s^2$