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9966 [12]
3 years ago
8

Which of the following is a true statment?

Physics
2 answers:
Andreas93 [3]3 years ago
5 0

Answer:

The Answer is C.

Explanation:

Its the right answer I just took the test

ValentinkaMS [17]3 years ago
3 0
Choices A, B, and D are false statements.

I think choice-C is trying to say the right thing, but it
might have gotten copied incorrectly.

Electric fields and electric forces both increase as the distance
decreases, and decrease as the distance increases.
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6X-6=9<br><br> Solve for X<br><br> Round to TWO decimal places
Brums [2.3K]

Answer:

X=2.50

Explanation:

6x-6=9

6x= 9+6

X=15/6

X= 2.50

8 0
3 years ago
A rotating paddle wheel is inserted in a closed pot of water. The stirring action of the paddle wheel heats the water. During th
fgiga [73]

Answer:

the final energy of the system is 35.5 kJ.

Explanation:

Given;

initial energy of the system, E₁ = 10 kJ

heat transferred to the system, q₁  30 kJ

Heat lost to the surrounding, q₂ = 5kJ

heat gained by the system, Q = q₁ - q₂ = 30 kJ - 5kJ = 25 kJ

work done on the system, W = 500 J = 0.5 kJ

Apply first law of thermodynamic,

ΔU = Q + W

where;

ΔU  is change in internal energy

Q is the heat gained by the system

W is work done on the system

ΔU = 25kJ + 0.5 kJ

ΔU = 25.5 kJ

The final energy of the system is calculated as;

E₂ = E₁ + ΔU

E₂ = 10 kJ + 25.5 kJ

E₂ =  35.5 kJ.

Therefore, the final energy of the system is 35.5 kJ.

3 0
2 years ago
Is it possible for an object that has a constant negative acceleration to change the direction in which it is moving? Explain wh
lozanna [386]
Yes! I think there are two ways you could go with this answer: 1) Acceleration is the change in velocity over time, it can be negative or positive. If you have an object that is already moving forwards in a straight line and give it a constant negative acceleration, it will slow down and then start going in reverse. 2)Velocity is a vector, meaning it has both magnitude and direction. In the example above, the acceleration is due to a change in magnitude, or speed (from +ve to -ve) but not a change in direction. Something that has constant speed but is changing direction is also accelerating (like something that is orbiting). You could use the earth as an example, which is constantly accelerating due to moving in a circle around the sun. At any time in the year you can say that in half a year's time the earth's direction will be reversed.
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In making water safe to drink, which process removes impurities by forcing water through sand or charcoal? A. aeration B. coagul
spin [16.1K]

The answer is C! I knew this way before taking the test

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4 years ago
Calculate the power if the current in a circuit is 3A and the resistance of the circuit is 50hms
Tresset [83]

Answer:

450W

Explanation:

V= I*R

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V=150V

P=I*V

P=3A*150V

P=450W

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