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irakobra [83]
3 years ago
7

What three steps can you take to ensure your measurments are both accurate and precise?

Physics
1 answer:
Ivan3 years ago
8 0

First, use a high-quality measurement tool. Next, measure carefully. Finally, repeat the measurement a few times. Hope it helps!

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From the top of a cliff, a person uses a slingshot to fire a pebble straight downward, which is the negative direction. The init
Talja [164]

Answer:

\vec{a} = -(9.8~{\rm m/s^2})\^y

Explanation:

Regardless of the initial velocity of the pebble, the acceleration of the pebble is equal to the gravitational acceleration which is equal to 9.8 m/s2 towards downwards direction.

This can be shown by Newton's Second Law. According to the law, the net force applied on an object is equal to mass times acceleration of that object.

During the downward motion, the only force acting on the pebble is the gravitational force, hence its acceleration is equal to gravitational acceleration.

8 0
3 years ago
Calculate the critical angle for Zircon which has a refractive index of n = 2*
MA_775_DIABLO [31]

Answer:

Given that refractive index of the material is √2. i.e. n = √2. Hence, critical angle for the material is 45°

8 0
3 years ago
Which of the following is a mixture?<br> a air<br> biron<br> Chydrogen<br> d nickel
Korolek [52]
The answer is Chydrogen
5 0
3 years ago
Which illusion or test was most difficult for you to perceive correctly? Why do you think this particular illusion was so challe
Alecsey [184]

Answer:

test 5 seemed to be the hardest for me to perceive in account i only saw three f's when there was indeed 6 it was very difficult to find the f's even going very slowly.  

Explanation:

correct on edge

4 0
2 years ago
Where are you most likely to build up enough static charge to receive a
FromTheMoon [43]

You're most likely to build up enough static charge to receive a  shock by walking around in a carpeted restaurant in the desert. (A)

Walking on carpet is the fastest way to accumulate charge, and the dry desert air prevents the charge from dribbling off of you and away.

When I walked on stones in the Sinai Desert, the dry wind with a little bit of sand or dust in it built up enough static charge on me that I got a shock every time I stood less than a foot away from my partner.

I had the same experience a few years later near Ouarzazate in the interior of Morocco.

When you hear people say "the desert is dry", they mean it's <em>DRY !  </em>

6 0
3 years ago
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