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Vedmedyk [2.9K]
3 years ago
14

What do scientists use observations for?

Physics
1 answer:
ddd [48]3 years ago
6 0
Observations are used to record the results of an experiment.
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Look at the circuit diagram. Which of these components is part of the circuit?
tangare [24]
I think the answer is c AC power source
Hope this help you?
4 0
3 years ago
Where does the energy in an unburned match come from?
choli [55]

A matchstick has a lot of chemical energy stored in it. When the match is struck, it burns and the chemical energy in it produces heat energy and light energy.

5 0
3 years ago
While visiting the planet Mars, Moe leaps straight up off the surface of the Martian ground with an initial velocity of 105 m/s
yawa3891 [41]

Answer:

L = 0 m

Therefore, the cricket was 0m off the ground when it became Moe’s lunch.

Explanation:

Let L represent Moe's height during the leap.

Moe's velocity v at any point in time during the leap is;

v = dL/dt = u - gt .......1

Where;

u = it's initial speed

g = acceleration due to gravity on Mars

t = time

The determine how far the cricket was off the ground when it became Moe’s lunch.

We need to integrate equation 1 with respect to t

L = ∫dL/dt = ∫( u - gt)

L = ut - 0.5gt^2 + L₀

Where;

L₀ = Moe's initial height = 0

u = 105m/s

t = 56 s

g = 3.75 m/s^2

Substituting the values, we have;

L = (105×56) -(0.5×3.75×56^2) + 0

L = 0 m

Therefore, the cricket was 0m off the ground when it became Moe’s lunch.

5 0
3 years ago
Match the layer of Earth with its characteristic.
mote1985 [20]

Answer:

Explanation:

The Asthenosphere -- drives the movement in the plates

<em>It is a weak and flexible part of the upper mantle of the planet Earth.</em>

<em>It is located below the lithosphere. The depth of it is between 200 and 80 kilometers below the surface. It is usually solid but in some regions it is fluid. The temperature dictates the thickness of the Asthenosphere.</em>

The Core -- the hottest layer of the Earth.

<em>The inner Core of the Earth is a layer that's located in the core of it.  By definition, it is a rock-hard ball that has the radius of 1,220 kilometers, making it 20% of the Earth's radius and 70% of the Moon's radius. The samples are not discovered. It is believed that it has the composition of iron-nickel infusion along with other elements. The temperature is appx. 5430 °C, which is similar to the temperature of the surface of the Sun.</em>

Mesosphere -- contains the lower mantle

<em>By definition, it comes from the Greek word mesos, which means '' middle ''.</em>

<em>It is the third layer of the Earth. It is located above the stratosphere and below the thermosphere. The higher the altitude,  the lower the temperature. It ends in the coldest part of the Earth, Mesopause. And it begins at the Stratosphere.</em>

Lithosphere -- contains the tectonic plates

<em>By the definition, it is also a word that came from the Greek language. It comes from the word '' lithos '' which means '' rocky ''.</em>

<em>It is a hard, outer part of the Earth.</em>

<em>On the planet Earth, it is made out of the crust of the upper mantle.  The rocks from the Lithosphere are elastic.</em>

<em>They are two types of Lithosphere -- the oceanic Lithosphere and Continental Lithosphere.</em>

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6 0
3 years ago
Read 2 more answers
A passenger travels from the first floor to the 60th floor, a distance of 210 m in 35 s. what is the elevators speed
Sati [7]
  • Distance=210m
  • Time=35s

\\ \tt\bull\leadsto Speed=\dfrac{Distance}{Time}

\\ \tt\bull\leadsto Speed=210/35=6m/s

3 0
3 years ago
Read 2 more answers
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