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pentagon [3]
3 years ago
12

All electric charge is based on the protons and electrons in atoms. true or false

Physics
1 answer:
Free_Kalibri [48]3 years ago
4 0

Answer:

true

Explanation:

electric charge is determined by electrons and protons, which are subatomic particles.

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Use the term chemical change in a complete sentence
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A paper being burned is a chemical change.

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An electric circuit can have no current when a switch is <br> .
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An electric current can have no current when the switch is OPEN
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Graphs are representations of equations.<br> A. True<br> B. False
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Hi there!

The answer is: A. True

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A car with good tires on a dry road can decelerate (slow down) at a steady rate of about 5.0 m/s2 when braking. if a car is init
Sladkaya [172]

The time required by the car to stop is 4.916 sec.

Since the car is moving with the constant deceleration we can apply the first equation of motion to calculate the time required by the car to stop.

The first equation of motion is given as

V=u+at

Here, V=final speed of the car=0 mi/h as the car stops

u =initial speed of the car=55 mi/hr=24.58 m/s

a= acceleartion =-5 m/s^2 (here negative sign indicates for deceleration)

Now applying the values in the first equation

V=u+at

0=24.58-5*t

t=4.916 sec

Therefore the car will stops in 4.916 sec.

8 0
3 years ago
Example to measure the interval of time of a small stone dropped from 1m height.
Shalnov [3]

Answer:

The time required is 0.45 s.

Explanation:

Height, h = 1 m

initial velocity, u = m/s

Let the time is t.

Use second equation of motion

h = u t + 0.5 at^2\\\\1 = 0 +0.5 \times 9.8 \times t^2\\\\t = 0.45 s

7 0
3 years ago
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