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Firdavs [7]
3 years ago
10

Which type radiation can be observed well from Earth's surface?

Physics
2 answers:
ddd [48]3 years ago
6 0

Answer:

Gamma Ray's as they have the shortest wavelength and highest frequency in the electromagnetic Spectrum.

umka2103 [35]3 years ago
4 0

Answer:

Eletromagnetic radiation which is also known as visible light.

Explanation:

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Most cars today use an ___ combustion engine ...<br> A. internal <br> B. external
Greeley [361]

A. Internal. Most cars use that type of set up because it's more efficient, you can find more about it on this website, https://auto.howstuffworks.com/did-cars-ever-have-external-combustion-engines.htm  

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~ Ria

4 0
3 years ago
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If a cart goes around a turn at 20 km/h ,what remains constant
Vitek1552 [10]

Answer: 4.speed

Explanation:

In this case, we know that the cart remains at a constant 20km/h.

Now, one could say that "the velocity remains constant, because it always is 20km/h"

But remember that velocity is a vector, so this has a direction, and if the cart is going around a turn, then the direction of motion is changing, which tell us that there is acceleration.

But the module of the velocity, the speed, remains constant at 20km/h.

Then the correct option is 4, speed.

7 0
3 years ago
A 1 800-kg pile driver is used to drive a steel I-beam into the ground. The pile driver falls 4.60 m before coming into contact
N76 [4]

Answer:

F = 614913.88 N

Explanation:

We are given;

Mass of pile driver; m = 1800 kg

Height of fall of pole driver; h = 4.6 m

Depth driven into beam; d = 13.6 cm = 0.136 m

Now, from energy equations and applying to this question, we can write that;

Workdone = Change in potential energy

Formula for workdone is; W = F × d

While the average potential energy here is; W = mg(h + d)

Thus;

Fd = mg(h + d)

Where F is the average force exerted by the beam on the pile driver while in bringing it to rest.

Making F the subject, we have;

F = mg(h + d)/d

F = 1800 × 9.81 × (4.6 + 0.136)/0.136

F = 614913.88 N

7 0
3 years ago
How are we Made out of cells
Anna [14]
All living beings are made up of cells. Some of them are made up of only onecell and others have many cells. The average adult human body has around 37.2 trillion cells.
5 0
3 years ago
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While at soccer practice, Korey ran around the track at 10 meters per second. He had a constant speed and did not change directi
Mariana [72]

Answer:

0m/s²

Explanation:

A body with a constant speed always has a zero acceleration

Hence if Korey ran around the track at 10 meters per second and had a constant speed and did not change directions, then his acceleration will be 0m/s² not considering his initial speed

4 0
3 years ago
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