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Alik [6]
4 years ago
5

Help!

Physics
2 answers:
Advocard [28]4 years ago
6 0
A. i think i don’t know for sure
Eddi Din [679]4 years ago
4 0
I think the answer is A
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How do mountain building and volcanoes relate to plate motion at convergent boundaries
Naddika [18.5K]
Mountains and volcanoes are built at convergent plates in a boundary which pushes up the earth.
5 0
4 years ago
A motorcycle slows down uniformly from a speed of 21 m/s to rest in 6.0s. How far did it travel during this time?
Verizon [17]

Answer:

63 m

Explanation:

The initial velocity of the motorcycle is

v_i = 21 m/s

The final velocity is

v_f = 0

And the time taken is

t=6.0 s

Since the acceleration of the motorcycle is uniform, we can find the distance traveled by the motorcycle during this time by using the following SUVAT equation:

S=\frac{1}{2} (v_i +v_f) t

Substituting numbers into the equation, we find

S=\frac{1}{2}( 21 m/s + 0)(6.0 s)=63 m

7 0
3 years ago
What is a wave frequency? A. the number of waves that pass a fixed point in a fixed period of time B. the speed that a wave is p
Tanzania [10]
Frequency - number of waves (vibrations, revolutions, of cycles) that pass a given point per unit time.

the correct answer should be A

hope this helps :)

8 0
3 years ago
Read 2 more answers
You are riding in a hot air balloon that, relative to the ground, has a velocity of 6.0 m/s due east. You see a hawk moving dire
charle [14.2K]

Answer:Velocity = 6.325m/s

Directional angle= 18.43°

Explanation:

Using Right angle triangle

Let Velocity of ballon&hawk be VHB represent the height of the triangle.

Let Velocity of balloon angle ground be VBG represent adjacent of the triangle.

Let Velocity of hawk and ground BE VHG represent the hypothesis.

Theta = opp/Adj= VHB/VBG

using pythagorean

VHG= SQRT(VHB^2+VBG^2)

VHG= sqrt(2^2+6^2)

VHG= sqrt(4+36)

VHG= 6.325m/s

Tan theta= 2/6

Tan theta =0.3333

Tan^-1 0.3333=18.43°

8 0
4 years ago
If you drop a rock off a cliff and it hits the ground 3 seconds later how tall is that cliff
skelet666 [1.2K]

Answer:

Basic kinematics, negating drag and assuming ideal conditions, we use the equation:

d=vi*t+1/2*a*t^2

Since vi is 0 (we know this because you’re dropping it, not throwing it)…

…and the only acceleration acting on it is gravity, a=9.8 m/s^2…

…we get

d=1/2(9.8)(5)^2

Explanation:

Some quick mental math tells us that this is about 125 m.

Plugging it in, we find it to be 122.5 m.

6 0
3 years ago
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