All categories

3 years ago

Please Help!! I'm timed!!

Physics

2 answers:

Paraphin [41]3 years ago

8 0

Answer:

an atomic nucleus contains most of the atoms mass

nikdorinn [45]3 years ago

5 0

$▪▪▪▪▪▪▪▪▪▪▪▪▪ {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪$

The Correct statement is :

<u>An atomic nucleus contains most of the atom’s mass</u>.

You might be interested in

Djejfje kdjejfjeofjod fjdidjskd.jdjdjdjdp

Mariana [72]

YUHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH gbghdwqygfywefyugsadfyuyuqwbhfbds hehrwuhuaijkfa

5 0

3 years ago

A capacitor is connected across an ac source. Suppose the frequency of the source is doubled. What happens to the capacitive rea

fgiga [73]

The capacitive reactance is reduced by a factor of 2.

<h3>Calculation:</h3>

We know the capacitive reactance is given as,

$Xc = \frac{1}{2\pi fC}$

where,

$Xc\\$ = capacitive reactance

f = frequency

C = capacitance

It is given that frequency is doubled, i.e.,

f' = 2f

To find,

$Xc$ =?

$Xc' = \frac{1}{2\pi f'C}$

$= \frac{1}{2\pi 2f C}$

$= \frac{1}{2} (\frac{1}{2\pi fC} )\\$

$Xc' = \frac{1}{2} Xc$

Therefore, the capacitive reactance is reduced by a factor of 2.

I understand the question you are looking for is this:

A capacitor is connected across an AC source. Suppose the frequency of the source is doubled. What happens to the capacitive reactant of the inductor?

The capacitive reactance is doubled.
The capacitive reactance is traduced by a factor of 4.
The capacitive reactance remains constant.
The capacitive reactance is quadrupled.
The capacitive reactance is reduced by a factor of 2.

Learn more about capacitive reactance here:

brainly.com/question/23427243

#SPJ4

3 0

2 years ago

How is the lifetime of a star related to its mass?

Flauer [41]

Stars having less mass collapses early than those with more mass. This can be explained by Einstein's equation E=mc².
According to this equation, mass of stars is converted into light due to thermonuclear reactions occuring in the core of star which acts as engine of the stars. This thermonuclear reactions keeps star alive. Thermonuclear reactions occurs slowly in massive stars hence massive stars live more than light stars.

6 0

3 years ago

Complete the sentences to describe the difference between speed and velocity.

xeze [42]

Answer:

velocity =displacement/time

and speed =distance/time

6 0

3 years ago

A garden hose attached with a nozzle is used to fill a 10‐ gal bucket. The inner diameter of the hose is 2 cm, and it reduces to

nadya68 [22]

Answer: