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astraxan [27]
3 years ago
8

In an electron dot diagram, the symbol for an element is used to represent

Physics
1 answer:
N76 [4]3 years ago
8 0
.....the answer is A....
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Multiple choice: Sunspots appear dark because
zepelin [54]

Answer: C. They are regions in which strong magnetic fields make it difficult for fresh supplies of hot, ionized gas to reach the photosphere

Explanation:

Sunspots appear dark because they are regions in which strong magnetic fields make it difficult for fresh supplies of hot, ionized gas to reach the photosphere.

Sunspots are typically cooler than their surroundings. For example, the temperature of a large sunspot can be about 4,000 Kelvin which is lower than the temperature of the photosphere around it which is about 5,800 Kelvin.

3 0
2 years ago
The hill is covered in gravel so that the truck's wheels will slide up the hill instead of rolling up the hill. The coefficient
mamaluj [8]

Answer:

Explanation:

check attachment  for the solution.

8 0
2 years ago
Do you think it is alright for a girl to try to win a race for a bike ride explain your answers
Korvikt [17]
Of course! Why not? Explain why? Um, because girls are capable of doing things.
4 0
2 years ago
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In the diagram below, a 5 kg box is pushed from rest by an applied force of 15N for 22 seconds. What was the impulse caused by t
Yakvenalex [24]

Answer:

330Ns

Explanation:

Given parameters:

Mass of the box  = 5kg

Initial velocity  = 0m/s

Force applied  = 15N

Time  = 22s

Unknown:

Impulse  = ?

Final momentum  = ?

Solution:

The impulse of the box can be determined using the expression below:

     Impulse  = Force x time

    Impulse  = 15 x 22 = 330Ns

The final momentum is the same as this impulse

The impulse and the final momentum is 330Ns

4 0
2 years ago
A student whirls a rubber stopper attached to a string in a horizontal circle above her head. If the radius of the stopper in ci
alexandr402 [8]

Answer:

v = 12.57 m/s

Explanation:

As we know that the radius of the circular motion is given as

R = 50.00 cm

time period of the motion is given as

T = 0.2500 s

now we know that it is moving with uniform speed

so it is given as

v = \frac{2\pi R}{T}

now plug in all data

v = \frac{2\pi(0.50)}{0.25}

v = 12.57 m/s

3 0
3 years ago
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