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ki77a [65]
3 years ago
6

High mass stars are more massive produce more energy burn brighter and have shorter life cycle than low mass stars

Physics
1 answer:
Zarrin [17]3 years ago
5 0
Yes, they do all of those things.
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Why is it that parents establish a positive relationship and positive communication with babies and young children
adoni [48]
In order to gain their trust, so that in any situation in their lifes like any worry their in, they can trust their parents for solutions in this wore some moment.
6 0
3 years ago
What role does density play in the movement of convection curruents?
shtirl [24]

Convection occurs through heat transfer due to a difference in density in the fluids.

Consider a pot of water being heated. The water in the pot gets heated rises ,it provides energy for the particles in the water to move and thus the water expands which results in the density of the water becoming less. These particles rise up till the top of the pot owing to the property of very less density of the particles.


Then after some time, it cools down which results in increase of the density of the particles. The heavier denser particles sink to the bottom and is once again heated and rises and this process continues unless all the water particles in the pot are heated and warmed.This transfer of energy by the movement of particles cause convection.


During the day the heat surface above the earth exposed to the sun's rays is heated. This rise in temperature,decreases the density of the air and the warm air rises.

This air cools down and becomes denser. This dense cool air sink back and forces the warm air to rise again.

This transfer of movement of particles causes convection. This cycle is the cause of winds and thus energy is transferred through the atmosphere.


7 0
3 years ago
A 3.8 kg ball is rolling eastward across a horizontal,
natali 33 [55]

Answer:

12

Explanation:

8 0
3 years ago
30N of force is used to raise a box that weight 60N up an incline plane. What is the mechanical advantage of the incline plane?
Sati [7]
To calculate MA = force needed/force used
Example
MA = 60/30 = 2
The mechanical advantage is 2
3 0
3 years ago
Christina drives his moped 7 kilometers North. She stops for lunch and then drives 5 kilometers East. What distance did she cove
Mashutka [201]

Answer:

She covers the distance is 12 km.

The magnitude of displacement is 8.6 km.

The direction of her displacement is north east.

Explanation:

Given that,

Christina drives his moped 7 kilometers North and stop for lunch and then drive 5 km east.

We need to calculate the total distance

Using formula of distance

d=d_{1}+d_{2}

Put the value into the formula

d=7+5

d=12\ km

We need to calculate the magnitude of displacement

Using formula of displacement

D=xi+yj

D=5i+7j

D=\sqrt{5^2+7^2}

D= 8.6\ km

The direction of her displacement is north east.

Hence, She covers the distance is 12 km.

The magnitude of displacement is 8.6 km.

The direction of her displacement is north east.

6 0
3 years ago
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