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Sonja [21]
3 years ago
9

What practical function is provided by the ionosphere? Produces auroras charges atoms heats oxygen and nitrogen permits worldwid

e radio communication
Physics
1 answer:
Karolina [17]3 years ago
6 0

Answer:

Worldwide Radio Communication

Explanation:

The ionosphere is important because it is through the ionosphere that world wide radio communication is possible.

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A fisherman noticed that a wave strikes the boat side every 5 seconds. The distance between two consecutive crest is 1.5m. What
GrogVix [38]
5/1.5=7 I think that is the answer
8 0
3 years ago
Which equation represents the total energy of a system?
aev [14]

C) Total Energy = Potential Energy + Kinetic Energy

Explanation:

The total energy of a system (also called mechanical energy) is given by:

E=PE+KE

where

PE is the potential energy

KE is the kinetic energy

The two types of energy have a different origin:

  • Potential energy (PE) is the energy possessed by an object due to its position. It is commonly in the form of gravitational potential energy, which is the energy due to the position of the object in the gravitational field, defined as:

PE=mgh

where m is the mass of the system, g the acceleration of gravity, h the heigth of the object relative to the ground

  • Kinetic energy (KE), which is the energy possessed by an object due to its motion. It is calculated as

K=\frac{1}{2}mv^2

where m is the mass of the system and v is its speed.

Learn more about kinetic and potential energy:

brainly.com/question/6536722

brainly.com/question/1198647

brainly.com/question/10770261

#LearnwithBrainly

8 0
3 years ago
Which diagram best represents the field around a positively charged particle?
AveGali [126]
The last one. Opposites attract while similar ones repulse each other so all forces are pushing them apart
6 0
3 years ago
Please help me with this, I will mark as Brianalist if right...​
Solnce55 [7]

Explanation:

To me, it's option 1

Newton third law states that Every action produces an equal and opposite reaction. Hence, given the fact that the engine is on, it should be producing a constant force every time so, the speed should be constant as the force propelling it is the same

7 0
3 years ago
You are crouched at the "start" line. Bang! The race begins and 7 seconds later you end up 60 yards down the track. What was you
Nutka1998 [239]

Answer:

a = 7.35 ft / s²

Explanation:

For this exercise we must use the kinematics relations

        x = v₀ t + ½ a t²

as the runner leaves the starting line his initial velocity is zero

        x = ½ a t²

        a = \frac{2x}{t^2}

let's reduce the distance to foot

        x = 60 yd (3ft / 1yd) = 180 ft

let's calculate

         a = 2 180 / 7²

         a = 7.35 ft / s²

6 0
3 years ago
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