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sammy [17]
2 years ago
6

Compared to the charge of proton,the charge of an electron has A) The greater magnitude and opposite sign B) The same magnitude

and the opposite sign C) The same magnitude and the same sign D) The greater magnitude and the same sign
Physics
1 answer:
Lyrx [107]2 years ago
4 0

Answer:

C. I'm pretty sure because I just took that test but I'm not sure

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1. A block of aluminum occupies
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Answer:

2700g/L

Explanation:

D=m/v

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Define potentiol energy , kenetic energy.​
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Potential energy is stored energy. For example, if a bowling ball is on top of a giant hill, we say it has potential energy because it has the potential to do work which is to roll down the hill.

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2 years ago
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A car with a mass of 1380 Kg is traveling at 23 m/s to the north. A truck with a mass of 1625 Kg is traveling at 26 m/s to the s
trasher [3.6K]

Answer: -3.49 m/s (to the south)

Explanation:

This problem can be solved by the Conservation of Momentum principle which establishes the initial momentum p_{i} must be equal to the final momentum p_{f}, and taking into account this is aninelastic collision:

Before the collision:

p_{i}=mV_{o}+MU_{o} (1)

After the collision:

p_{f}=(m+M)V_{f} (2)

Where:

m=1380 kg is the mass of the car

V_{o}=23 m/s is the velocity of the car, directed to the north

M=1625 kg is the mass of the truck

U_{o}=-26 m/s is the velocity of the truck, directed to the south

V_{f} is the final velocity of both the car and the truck

p_{i}=p_{f} (3)

mV_{o}+MU_{o}=(m+M)V_{f} (4)

Isolating V_{f}:

V_{f}=\frac{mV_{o}+MU_{o}}{m+M} (5)

V_{f}=\frac{(1380 kg)(23 m/s)+(1625 kg)(-26 m/s)}{1380 kg+1625 kg} (6)

Finally:

V_{f}=-3.49 m/s The negative sign indicates the direction of the velocity is to the south

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3 years ago
NEED HELP ASAP.. ANSWER AS MANY AS YOU CAN
Yuri [45]

Answer:q1=a q2=c

Explanation:

6 0
3 years ago
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