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3 years ago

In your own words describe the motion of convection currents?

2 answers:

5 0

Convection is the circular motion that occurs as hotter air or liquid increases when the cooler air or liquid drops down, and has faster moving molecules, rendering it less dense. Convection currents within the earth shift layers of magma, and currents are formed by convection in the ocean.

Black_prince [1.1K]3 years ago

5 0

Heat energy can transfer by convection when there is a significant difference in temperature between two parts of a fluid. When this temperature difference exists, hot fluids rise and cold fluids sink, and then currents, or movements, are created in the fluid.

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When the mass of an object increases, the forcé of gravity

diamong [38]

Answer:

increace

Explanation:

they are both going up

7 0

3 years ago

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Why one part of the earth's surface is arid and dry and a nearby part is lush and wet is explained by the term?

Darina [25.2K]

The process that explains why one part of the earth's surface is arid and dry and a nearby part is lush and wet is areal differentiation. It is an approach to geography that shows the dependence of the distribution of physical and human phenomena and the relation to each other from the physical location. Areal integration on the other hand is the approach that studies how places interact with each other.

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4 years ago

A grape is thrown straight up in the air. If it was thrown at 2 m/s, how high will it go in the air?

ser-zykov [4K]

Answer:

Answer: Height is 0.204 m

Explanation:

At the highest point, it is called the maximum height.

• From third newton's equation of motion:

${ \rm{ {v}^{2} = {u}^{2} + 2gs}}$

• At maximum height, v is zero

• u is initial speed

• g is -9.8 m/s²

• s is the height

${ \rm{0 {}^{2} = {2}^{2} - (2 \times 9.8 \times s)}} \\ \\ { \rm{4 = 19.6s}} \\ \\ { \rm{s = 0.204 \: m}}$

4 0

2 years ago

Read 2 more answers

A worker pushes a box across the floor to the right at a constant speed with a force of 25N. What can you conclude about the box

kotykmax [81]

Answer:

C. Friction between the box and the floor is 25N to the left

Explanation:

7 0

3 years ago

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11. A plow pushes 100 kg of snow with 300 N of force. How much is the pile of snow accelerated?

Fed [463]

Answer:

Explanation:

This is an application of Newton's second Law.

Formula

F = m * a

F = 300 N

m = 100 kg

a = ?

F = m * a

300N = 100 kg * a Divide by 100

300N/100kg = a

a = 3 m/sec^2

3 0

2 years ago