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Nata [24]
4 years ago
12

What causes changes in weather?

Physics
2 answers:
horsena [70]4 years ago
6 0

A: Air masses move and meet.

OLga [1]4 years ago
4 0

The answer is A, I took the test.

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In science, Bob learns that the energy of a wave is directly proportional to the square of the waves amplitude. If the energy of
Naddika [18.5K]

Answer:

Probably none of the above. it's says directly proportional so there would be a proportionality constant.

4 0
4 years ago
With fuel prices for combustible engine automobiles increasing, researchers and manufacturers have given more attention to the c
Alinara [238K]

Answer:

Then the difference of weight between the two cars are:

Δw = 14210 - 5292 = 8918 N

Explanation:

An object's weigh due to the gravitational attraction force of the earth is:

w = mg

            Where: m is the object's mass

                         g is the  gravitational acceleration in the surface earth

                         g = 9.8 m/s2

The the ultralight car's weight is:

w_{uc} = (540)(9.8)

w_{uc} = 5292 N

And the Honda Accord's weight is:

w_{HA} = (1450)(9.8)

w_{HA} = 14210 N

Then the difference of weight between the two cars are:

Δw = 14210 - 5292 = 8918 N

4 0
4 years ago
The activation of the sympathetic division would prepare people for
vagabundo [1.1K]
<span>The answer is fight or flight response.
The activation of the sympathetic division would prepare people for "fight or flight" response.
</span><span>The other names that are used for the fight or flight response are hyperarousal, response and the acute stress response.
There are two divisions in </span><span>autonomic nervous system, one of the division is sympathetic division and the other one is parasympathetic division.</span><span>
</span><span>
</span>
7 0
3 years ago
If a motorcyclist accelerates from rest to 40 m/s in 8 seconds, what is their acceleration?
IgorC [24]

Answer:

5 m/s²

Explanation:

Given:

v₀ = 0 m/s

v = 40 m/s

t = 8 s

Find: a

a = (v − v₀) / t

a = (40 m/s − 0 m/s) / 8 s

a = 5 m/s²

8 0
3 years ago
A train moves with a constant velocity for 15s for 155m. How fast is the train moving?
bonufazy [111]

Answer: 10.3m/s

Explanation:

In theory and for a constant velocity the physics expression states that:

Eq(1):  distance  = velocity times time <=> d = v*t    for v=constant.

If we solve Eq (1) for the velocity (v) we obtain:

Eq(2):  velocity  = distance divided by time <=> v = d/t

Substituting the known values for t=15s and d=155m we get:

v = 155 / 15 <=> v = 10.3

5 0
3 years ago
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