What are newtons three laws of motion?

2 answers:

8 0

Newton worked in many areas of mathematics and physics. He developed the theories of gravitation in 1666, when he was only 23 years old. Some twenty years later, in 1686, he presented his three laws of motion in the "Principia Mathematica Philosophiae Naturalis." hope that helps

igomit [66]2 years ago

7 0

Newton's First Law of Motion is the Law of Inertia,

The Second Law of Motionexpresses the relationship between force, mass and acceleration.

The Third Law of Motion states that "for every action, there is an equal and opposite reaction."

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100 kw of power is delivered to the other side of a city by a pair of power lines with the voltage difference of 13014.1 v.

FinnZ [79.3K]

A) The power delivered to the lines is
$P_{in}= 100 kW=1 \cdot 10^5 W$
And the voltage at which the lines work is
$V=13014.1 V$
Since the power delivered is the product between the voltage and the current:
$P=VI$
We can find the current flowing in the lines:
$I= \frac{P}{V}= \frac{1 \cdot 10^5 W}{13014.1 V}=7.68 A$

b) The voltage change along each line can be found by using Ohm's law:
$\Delta V = IR = (7.68 A)(10 \Omega)=76.8 V$

c) The power wasted as heat along each line is given by:
$P_d = I^2 R = (7.68 A)^2 (10 \Omega) = 590 W$
And since we have 2 lines, the total power wasted as heat in both lines is
$P_d = 2 \cdot 590 W=1180 W$

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sergey [27]

The answer is A and B

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AND

Protons and neutrons have approximately the same mass, about 1.67 × 10-24 grams.

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Use the terms in the word box to label each class of lever and the diagram.

balu736 [363]

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ollegr [7]

I think it is D
Hope my answer help you?

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Furkat [3]

Answer:

It’s A

Explanation:

I just took the test

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2 years ago

Read 2 more answers