What is the wave speed of a wave that has a frequency of 20 Hz and a wavelength of 30 m?

Which statement best describes how energy transfer within earths atmosphere 10 affect a weather condition? A)during radiation ob

Pie

Answer: D

Explanation: During convection, heat is being transferred between substances in direct contact with each other by electro magnetic waves.

Using the molten rock to explain the convection in the earth relative to how if affects the weather condition. Here, the rock is in a molten state, rising up from the bottom of the mantle after becoming hotter and less dense from the heat of the earth's core. As the rock loses heat into the earth's crust, it become cooler and more dense,sinking back to the core. These constantly circulating cells of hotter and cooler molten rock help to heat the earth's surface.

5 0

3 years ago

Consider a satellite in a circular orbit around the Earth. If it were at an altitude equal to twice the radius of the Earth, 2RE

Elenna [48]

Answer:

$v=\sqrt{\frac{gR_E}{2}}$

Explanation:

Satellites experiment a force given by Newton's Gravitation Law:

$F=\frac{GMm}{r^2}$

where M is Earth's mass, m the satellite's mass, r the distance between their gravitational centers and G the gravitational constant.

We also know from Newton's 2nd Law that <em>F=ma, </em>so putting both together we will have:

$ma=\frac{GMm}{r^2}$

$a=\frac{GM}{r^2}$

If we are on the surface of the Earth, the acceleration would be g and $r=R_E$ (Earth's radius):

$g=\frac{GM}{R_E^2}$

Which we will write as:

$gR_E^2=GM$

If we are on orbit the acceleration is centripetal ( $a=\frac{v^2}{r}$ ), so we have:

$\frac{v^2}{r}=a=\frac{GM}{r^2}=\frac{gR_E^2}{r^2}$

$v^2=\frac{gR_E^2}{r}$

$v=\sqrt{\frac{gR_E^2}{r}}$

And if this orbit has a radius $r=2R_E$ we have:

$v=\sqrt{\frac{gR_E^2}{2R_E}}=\sqrt{\frac{gR_E}{2}}$

3 0

3 years ago

Read 2 more answers

3 things that Gravity affects

slamgirl [31]

Answer: See explanation

Explanation:

Gravity is simply referred to as the force of attraction between two particles or masses. Through gravity, the moon moves round the Earth.

Gravity also causes a fruit to fall from its tree. It can also cause an object to roll and fall from the table to the ground. In gravity, distance and mass are vital.

4 0

3 years ago

What scientist is well known for his theory of relativity?

ella [17]

Albert Einstein published the theory of special relativity in 1905, and general relativity in 1916.

4 0

3 years ago

Two asteroids in outer space collide, and stick together. The mass of each asteroid, and the velocity of each asteroid before th

Kipish [7]

Utilizing the momentum principle is a good strategy since there are no outside forces acting on system, its total linear momentum is constant, and the total beginning and final momentum of the system are equal.

<h3>What does momentum mean in the real world?</h3>

The amount that motion is referred to as momentum. Since an object possesses speed if it is moving and has mass, amount is measurable in this situation. An object doesn't have momentum if it isn't moving. Nevertheless, despite its significance in everyday life, many people remained unaware of it.

<h3>What use does momentum serve?</h3>

Momentum is a vectors quantity since it has both size and direction. Since inertia has a direction, it is used to forecast the direction and rate of motion of objects after a collision. Below is a one-dimensional description of the fundamental characteristics of momentum.

To know more about momentum visit:

brainly.com/question/24030570

#SPJ4

3 0

1 year ago