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Snezhnost [94]
3 years ago
13

Brainliest!!! A student wanted to answer the question, “How does the amount of glycerin affect the size of a bubble blown with s

oap mixture of water, dish soap and glycerin?”. She decided to test the amount of glycerin added to a soap mixture and used 1 drop, 2, drops, 3 drops, and 4 drops. She would add 10 mL of soap to 50 mL of water for each bubble solution. She measured the size (cm) of the bubble produced for each solution.
What is the independent variable?
Physics
2 answers:
trapecia [35]3 years ago
7 0
It’s Glycerin because an independent variable is defined as the variable that is changed or controlled in a scientific experiment. It represents the cause or reason for an outcome. A change in the independent variable directly causes a change in the dependent variable. The effect on the dependent variable is measured and recorded.
laiz [17]3 years ago
5 0

Answer: water is your independent variable.

Explanation: it’s the one variable that stays consistent in the experiment

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An electron is moving in the presence of an electric field of 400 N/C. What force does the electron experience?
yanalaym [24]

Answer:

Explanation:

Given

Electric Field strength E=400\ N/C

charge of electron q=1.6\times 10^{-19}\ C

Force on the charge particle is given by

F=qE

F=1.6\times 10^{-19}\times 400

F=640\times 10^{-19}\ N

but this force will be acting in the direction opposite to the direction of Electric field because electron is negatively charged                                            

8 0
3 years ago
Most geologists think that the movement of Earth's plates is cause by 
kramer
<span>c) convection currents in the mantle </span>
5 0
3 years ago
Read 2 more answers
What happens to the force attraction of the distance two objects is increased?
Fed [463]

Answer:

Explanation:

The attraction weakens. Two objects that are farther apart are not drawn together as strongly as if they were close together.

5 0
3 years ago
When running a marathon what kind of energy transformation takes place
xz_007 [3.2K]
Thermal energy is transforming, i think.
5 0
3 years ago
Question 1 of 25
finlep [7]

Answer:

<em>2.753*10^-11N</em>

Explanation:

According to Newton's law of gravitation, the force between the masses is expressed as;

F = GMm/d²

M and m are the distances

d is the distance between the masses

Given

M = 3.71 x 10 kg

m = 1.88 x 10^4 kg

d = 1300m

G = 6.67 x 10-11 Nm²/kg

Substitute into the formula

F = 6.67 x 10-11* (3.71 x 10)*(1.88 x 10^4)/1300²

F = 46.52*10^(-6)/1.69 * 10^6

F = 27.53 * 10^{-6-6}

F = 27.53*10^{-12}

F = 2.753*10^-11

<em>Hence the gravitational force between the asteroid is 2.753*10^-11N</em>

<em></em>

6 0
2 years ago
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