All categories

3 years ago

Which statement best summarizes the central idea of "Applications of Newton's Law

2 answers:

5 0

The FIRST statement best summarises Newton's laws of Motion. (He also wrote laws of a lot of other things. He may have been the smartest scientist who ever lived.)

blondinia [14]3 years ago

3 0

It should be the first one

You might be interested in

A resistor with R=300 ? and an inductor are connected in series across an ac source that has voltage amplitude 500 V. The rate a

qaws [65]

Answer:

impedance Z = 416.66 ohm

voltage across inducance V = 346.99 V

power factor = 0.720

Explanation:

given data

resistor R = 300

voltage amplitude = 500 V

resistor = 216 W

to find out

impedance and amplitude of the voltage and power factor

solution

we apply here average power formula that is

average power = I²×R ............1

I = $\frac{Vrms}{Z}$

average power = ( $\frac{Vrms}{Z}$ )²×R

Vrms = $\frac{1}{\sqrt{2} }$ × Vmax

Z = V × $\sqrt{\frac{R}{2P} }$

Z = 500 × $\sqrt{\frac{300}{2*216} }$

impedance Z = 416.66 ohm

and

we know voltage across inductor is here express as

V = I × X .............2

so here X will be by inductance

Z² = R² + (X)²

(X)² = 416.66² - 300²

X = 289.15 ohm

and I = $\frac{V}{Z}$

I = $\frac{500}{416.66}$

I = 1.20 A

so from equation 2

V = 1.20 × 289.15

voltage across inducance V = 346.99 V

and

average power = Vmax × Imax × cos∅

tan∅ = $\frac{289.15}{300}$

tan∅ = 43.95°

so power factor is

power factor = cos43.95°

power factor = 0.720

7 0

3 years ago

Is it point<br> A,B,C or D

e-lub [12.9K]

the answer is (c) i think

5 0

2 years ago

a pennyfarthing is a style of a bicycle with a very large front wheel and a small real wheel, the cyclist who sit high above and

s344n2d4d5 [400]

Answer:

In one rotation, the large wheel turns 4m.

Explanation:

The given values are:

Input distance,

= 0.64 m

Mechanical advantage,

= 0.16

As we know,

⇒ $Out. \ Distance = \frac{Inp. \ distance}{Mechanical \ advantage}$

On putting the values, we get

⇒ $=\frac{0.64}{0.16}$

⇒ $=4 \ m$

4 0

3 years ago

A tool that uses lenses to focus light and<br>create useful images<br>

lianna [129]

the answer your looking for is Optical instrument.

5 0

3 years ago

Read 2 more answers

When a car moves up a hill with constant

zysi [14]

C gains potential energy

5 0

2 years ago

Read 2 more answers