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frozen [14]
3 years ago
9

A student measures the speed of a rolling ball three times. She adds the measurements and divides by 3. What quantity did the st

udent calculate?
Physics
2 answers:
Lapatulllka [165]3 years ago
7 0
They calculated the mean value
AlexFokin [52]3 years ago
6 0

Answer:

average speed

Explanation:

Data collected for speed = 3 times

Say the three speeds are v1, v2 and v3

Now (v1 + v2 + v3) / 3

It gives the average speed.

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Plz help on this ASAP !!
makkiz [27]

It would most likely be answer B considering the other ones don’t make sense in this question

4 0
2 years ago
In the following lever system, what is the clockwise torque? 18 Nm 240 Nm 360 Nm 480 Nm
MaRussiya [10]

Answer:

240 Nm

Explanation:

The clockwise torque is the torque determined only by the force that makes the lever rotating clockwise: therefore, the force of 80 N on the right.

The torque produced by this force is given by:

\tau = F d

where

F is the magnitude of the force

d is the arm

For the force of 80 N on the right,

F = 80 N

d = 3 m (distance from the pivot)

So, the clockwise moment is

\tau = (80)(3)=240 Nm

3 0
3 years ago
Read 2 more answers
What is the medium through which the wave is moving?
irakobra [83]

Rope or one could consider it to be C to B or A to D

5 0
3 years ago
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Only answer if you know all of them
lesya692 [45]
1)
The connections between neurons in the retina, specifically the connections referred to as “lateral inhibition,” help us see which of the following better?

<em><u>A) Contrast</u></em>
B) Faces
<span>C) Colors

2)
</span>Improving the contrast of an image (making the dark regions darker and the light regions lighter) helps us to identify:

<em><u>A) The edges of objects</u></em>
B) The center of objects
<span>C) The color of an object
</span>
3)
What assumption does our visual system make in order to see curved surfaces (domes, holes)?

<em><u>A) Light comes from above</u></em>
B) Curved surfaces are always evenly lit
<span>C) Curved surfaces are always easy to see, no assumptions are made
</span>
4)
Which part of the face does our brain pay the most attention to?

<u><em>A) Eyes and mouth</em></u>
B) Eyes and ears
<span>C) Eyes and chin
</span>
5)
If all these assumptions sometimes lead to mistakes, for example in these optical illusions, why do we make them?

A) It helps us see things faster
B) It helps us see things correctly
C) It helps us pay attention to what's important
<span><em><u>D) All of the above
</u></em>
</span>
Hope that helps :)
*the correct answers are bolded, italicized, and underlined.*
4 0
3 years ago
Which state of matter contains the most energetic particles?
Ghella [55]
As in liquids or solids, if so it would be liquids because the particles are freely moving around and not held still like solids. 
4 0
3 years ago
Read 2 more answers
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