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2 years ago

Can an object exert a force on itself?

1 answer:

5 0

No it can’t. The result of interaction is force and for interaction, we need two. I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.

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How does changing the potential difference in a circuit affect the current and the resistance?

Effectus [21]

Answer:

The current will be increased and also for the resistance.

Explanation:

The analysis of a direct current circuit can give us the explanation we need. Using the ohm law, which tells us that the voltage is equal to the product of the current by the resistance we have:

$V=I*R\\where\\V= voltage [V]\\I= amperes [amp]\\R=resistance [ohm]\\$

The voltage is equal to the potential difference therefore we will have these expressions:

$I=\frac{V}{R} \\R= \frac{V}{I}$

If we increase the potential differential or circuit voltage, the current will also increase and so does the resistance by increasing the voltage. If we put numerical values in the equation given before, we can confirm this fact.

4 0

2 years ago

An airplane flying at 115 m/s due east makes a gradual turn following a circular path to fly south. The turn takes 15 seconds to

bulgar [2K]

To solve this exercise it is necessary to apply the concepts related to Centripetal and Perimeter acceleration of a circle.

The perimeter of a circle is defined by

$P = 2\pi r$

Where,

r= radius

While centripetal acceleration is defined by

$a=\frac{v^2}{r}$

Where,

v= velocity

r= radius

PART A)

The distance of a body can be defined based on the speed and the time traveled, that is

x = v*t

For our values the distance is equal to

x = 15*115=1725m

The plane when going to make the turn from east to south makes a quarter of the circumference that is

$\frac{P}{4} = \frac{2\pi r}{4}$

The same route you take is the distance traveled, that is

$x = \frac{P}{4}$

$x = \frac{2\pi r}{4}$

$1725 = \frac{2\pi r}{4}$

$r = 1098.17m$

PART B)

With the radius is possible calculate he centripetal acceleration,

$a = \frac{v^2}{r}$

$a = \frac{115^2}{1098.17}$

$a = 12.04m/s^2$

Therefore the radius of the curva that the plane follows in making the turn is 1098.17m with a centripetal acceleration of $12.04m/s^2$

3 0

3 years ago

The nucleus of most atoms is composed of which of the following sub-atomic particles? (A) tightly packed neutrons

solmaris [256]

Answer:

(B) tightly packed protons and neutrons

Explanation:

Nucleus of any atom is the dense central part of any atom.
It consists of two sub-atomic particle namely proton and neutron.
These sub-atomic parts are tightly packed in nucleus which makes the nucleus dense .
This dense nucleus is responsible for most of the mass of atom.
The atomic mass for any atom is decided by sum of the mass of proton and neutron

Thus, correct answer is

(B) tightly packed protons and neutrons

4 0

2 years ago

How can you decrease the amount of input force of a wheel and axle?

nasty-shy [4]

Explanation:

hmm by the increasing the size of wheel and decreasing axle

7 0

2 years ago

An electric current consists of moving

Slav-nsk [51]

<h3>An electric current consists of moving</h3>

<h2>ANSWER</h2>

A) atoms

<h3><em><u>B) electrons</u></em></h3>

C) elements

D) molecules

3 0

2 years ago