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2 years ago

What is the force between two charged objects called ?

Physics

2 answers:

Ierofanga [76]2 years ago

7 0

Answer:

Coulomb force

Explanation:

The electric force between charged bodies at rest is conventionally called electrostatic force or Coulomb force. The force is along the straight line joining the two charges.

Travka [436]2 years ago

4 0

Coulomb force I think

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How many neutrons does element X have if its atomic number is 23 and its mass number is 90?

givi [52]

Answer:

Explanation:

- The atomic number (Z) of an atom is equal to the number of protons in the nucleus

- The mass number (A) of an atom is equal to the sum of protons and neutrons in the nucleus

Therefore, calling p the number of protons and n the number of neutrons, for element X we have:

Z = p = 23

A = p + n = 90

Substituting p=23 into the second equation, we find the number of neutrons:

n = 90 - p = 90 - 23 = 67

4 0

3 years ago

Read 2 more answers

you are sitting behind the bus driver on a moving bus in relation to a person standing on the sidewalk you are what

grigory [225]

You are sitting behind the bus driver on a moving bus in relation to a person standing on the sidewalk you are what

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relative to sidewalk you are moving with the driver

4 0

3 years ago

You see a lightning bolt flash in the distant sky. You hear the corresponding thunder 6.8 seconds later. If the temperature is 2

Anna35 [415]

Answer:

$Distance = 2.4\ km$

Explanation:

Given

$Time (t) = 6.8s$

$Temperature = 28C$

Required

Determine the distance at which the lighting struck

First, we need to determine the speed at which the lighting struck because the peed of sound varies with temperature.

At about 28C, the speed of sound is 346m/s

So, we have the following:

$Speed = 346m/s$

$Time = 6.8s$

Distance is calculated as thus:

$Distance = Speed * Time$

$Distance = 346m/s * 6.8s$

$Distance = 2352.8$

Divide by 1000 to get distance equivalent in kilometers

$Distance = \frac{2352.8km}{1000}$

$Distance = 2.3528km$

$Distance = 2.4\ km$ ---- Approximated

7 0

3 years ago

1. A man is running on the straight road with the uniform velocity

Rufina [12.5K]

None he is undergoing constant uniform velocity. Acceleration is the rate of change of velocity

8 0

2 years ago

Read 2 more answers

Two satellites A and B of the same mass are orbiting Earth in concentric orbits. The distance of satellite B from Earth’s center

riadik2000 [5.3K]

Answer:

ratio of tangential velocity of satellite b and a will be 0.707

Explanation:

We have given distance of satellite B from satellite A is twice

So $r_b=2r_a$

Tangential speed of the satellite is given by

$v=\sqrt{\frac{GM}{r}}$ , G is gravitational constant. M is mass of satellite and r is distance from the earth

We have to find the ratio of tangential velocities of b and a

From the relation we can see that tangential velocity is inversely proportional to square root of distance from earth

So $\frac{v_b}{v_a}=\sqrt{\frac{r_a}{r_b}}$

$\frac{v_b}{v_a}=\sqrt{\frac{r_a}{2r_a}}$

$\frac{v_b}{v_a}=\sqrt{\frac{1}{2}}$

$\frac{v_b}{v_a}=0.707$

So ratio of tangential velocity of satellite b and a will be 0.707

5 0

2 years ago