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Gnoma [55]
3 years ago
8

Physics (Electricity)

Physics
2 answers:
Georgia [21]3 years ago
7 0
Here are the 4 parts a-d.  

Elanso [62]3 years ago
5 0
8(a) charges at A and B are 4q(of which its initially q and later 3q is added) and q respectively.

answer is 4*4*10^{-5}
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The speed of light is about 3.00 × 105 km/s. It takes approximately 1.28 seconds for light reflected from the
Ulleksa [173]
Just to correct you - the speed of light is 3.0 x 10^5 km/sec and not 105 km/sec as given by you (maybe it was just a typing mistake from your end).

The average distance between earth and moon would be - 384,000 kms. 

This is calculated by the formula -> Distance = Speed x Time.
 

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3 years ago
Which of these results in kinetic energy of an object? (1 point)
Aleksandr [31]
Motion I’m pretty sure
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3 years ago
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PLEASE HELPPPP!!!<br> Density is the amount of mass per unit volume.<br><br><br> True or False
Alexxandr [17]

Answer:

true :D

Explanation:

4 0
3 years ago
A centrifuge is a device used to separate materials by their masses. A sample in a centrifuge is rotated at high speeds along a
german

Answer:

 F = 1.047 10⁻² N

Explanation:

Let's use kinematics to find the angular acceleration

             w = w₀ + α t

as for rest w₀ = 0

             w = α t

             α = w / t

let's reduce the magnitudes to the SI system

              w = 1000 rev / min (2π rad/ 1 rev) (1 min/ 60s) = 104.72 rad / s

              m = 1.00 g (1 kg / 1000 g) = 1,000 10⁻³ kg

              r = 10.0 cm (1 m / 100 cm) = 0.100 m

let's calculate

              α = 104.72 / 1

              α = 104.72 rad / s²

angular and linear variables are related

               a = α  r

               a = 104.72 0.100

               a = 10.47 m / s²

finally we substitute in Newton's second law

               F = 1 10⁻³ 10.47

               F = 1.047 10⁻² N

8 0
3 years ago
Maurice pulls on the end of a spring scale. He lets go of the end and observes the spring snap back into place. What force resto
Zina [86]

Elastic

Explanation is that it is force which is snapping back

7 0
3 years ago
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