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mote1985 [20]
1 year ago
9

Random errors can be reduced by taking repeated measurements.Error and uncertainty are interchangeable words that describe the s

ame concept.are these statements true or false
Physics
1 answer:
fiasKO [112]1 year ago
5 0

repeated mesurement can reduce the error

it is true

if you take any mesurement repeatedly and the average is taken, the error will be less

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While on the moon, the Apollo astronauts enjoyed the effects of a gravity much smaller than that on
Ainat [17]

Answer:

1.628 \frac{m}{sec^{2} }

Explanation:

Anywhere in the universe, In a closed system, <u>Conservation of energy</u> is applicable.

In this case

Neil is initially on the surface of moon and has a velocity of 1.51 \frac{m}{sec} in upward direction.

⇒He has Kinetic energy= K_{i} = \frac{1}{2} m{v^{2} } J

But with respect to the surface of the moon,

where m=mass of moon

           v=velocity of Neil

He has Potential energy= P_{i}=0 J

At the highest point of his jump, his velocity =0

⇒ Kinetic energy=K_{f}=0 J

His Potential energy with respect to the surface of moon=P_{f}=m \times g\times h

where m=mass of moon

           g= gravitational acceleration on moon

           h=height from moon's surface

By Conservation Energy Principle

K_{i}+P_{i}=K_{f}+P_{f}

K_{i}+0=0+P_{f}

\frac{1}{2} m{v^{2} } = m \times g\times h

\frac{v^{2} }{2} =  g\times h

\frac{1.5^{2} }{2} J= g\times 0.7 m

⇒ g = \frac{1.14}{0.7} = 1.628 \frac{m}{sec^{2} }

8 0
3 years ago
The yangtze river is the world’s third-largest river and is used extensively as a trade avenue.
mel-nik [20]

The yangtze river is the world’s third-largest river and is used extensively as a trade avenue. The given statement is true.

<h3>What is trade avenue?</h3>

Trade avenue is a street or road used to do trading or exchange of goods.

Yangtze river is in China. It runs for 3900  miles right from the Tibetan Plateau to the estuary of East China near to Shanghai.

The Yangtze river is the world’s third-largest river and is used extensively as a trade avenue.

Thus, the statement is true.

Learn more about trade avenue.

brainly.com/question/3304374

#SPJ1

3 0
2 years ago
Which sphere is NOT a part of the cycling of oxygen through Earths systems ?
stepan [7]
The answer would be Exosphere because, there are 3 main regions that circulate oxygen through the Earths system, which are the Biosphere, Atmosphere, and the Lithosphere. 
5 0
3 years ago
A jetliner flies east 2000 miles from San Francisco to Chicago. It has an average air speed of 600 mph relative to the air. What
mariarad [96]

Answer:

750 mph, east

Explanation:

The jetliner is going from San Francisco to Chicago... so it's moving from West to East, at 600 mph, relative to the air.

The wind is also moving from West to East, at 150 mph.

Since both are going in the same direction, we combine the speeds by adding them to each other.  If they were in opposite direction, we would subtract them.

So, 600 mph for the plane + 150 mph for the wind = 750 mph, going EAST.

7 0
3 years ago
What causes melting of material under divergent plate boundaries?
Triss [41]
Melting: as mantle material rise toward the divergent plate boundary the pressure is reduced which causes melting
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