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DENIUS [597]
3 years ago
14

What measurements would you need to calculate the density of a nail?

Physics
1 answer:
Elis [28]3 years ago
4 0
It is c, man it is positively c.
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When designing an experiment how do you choose a system to investigate
Nana76 [90]
You pick a system for which no control sample exists, so that no one can show that the alleged causal relationships you assert do not, in fact, lead to the phenomenon you claim to have observed.
4 0
3 years ago
Which of the following is considered a physical change? burning paper rusting of metal evaporating water
alex41 [277]

When paper burns, some of the chemical compounds in the
paper combine with oxygen in the air and become different
chemical compounds.  That's a chemical change.

When iron rusts, or copper or silver turns green, that's the result
of the metal at the surface combining with the oxygen in the air and
forming a new chemical compound.  Those are chemical changes.

When water evaporates, H₂O in the liquid phase gains thermal
energy and changes to H₂O in the gaseous phase. No chemical
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6 0
3 years ago
Many arlines restrict maximum mass of a case to 23 kg why​
Alexxandr [17]

Answer:

weight

Explanation:

the weight of an object on an airline is one of the most important thing a pilot has to consider when prepping a flight and that is because if there is too much weight then the plane simply can't fly. imagine if everyone wanted to bring a 50 kg box. there are at least  200 people.  that alone is 10,000 lg of weight than you have to factor in all the people, wires on the plane, and certain appliances that some planes have.

7 0
3 years ago
"what shape are the pebble-sized particles that make up the rock?"
Fiesta28 [93]
The shape of which the pebble sized particles that makes up the rock is more of a rounded shape as they are bits and in circular formation, depicting it to be more rounder in which are particles that is made up in a rock. They can be in pebble sized or much more smaller than that when in bits.
5 0
3 years ago
As a dilligent physics student, you carry out physics experiments at every opportunity. At this opportunity, you carry a 1.39-m-
grin007 [14]

Answer:

The strength of magnetic field is 6.21 \times 10^{-5} T

Explanation:

Given:

Length of rod l = 1.39 m

Velocity v = 3.37 \frac{m}{s}

Induced emf = 0.291 \times 10^{-3} V

According to the faraday's law

Induced emf = Blv

We have to find strength of the magnetic field,

   B = \frac{0.291 \times 10^{-3} }{1.39 \times3.37}

   B = 6.21 \times 10^{-5} T

Therefore, the strength of magnetic field is 6.21 \times 10^{-5} T

7 0
3 years ago
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