Define circular motion and give some examples.

Answers

Answer 1

Answer: "Circular motion" is motion in a circular path.

-- Any point on the tire of a bicycle or a car that is moving.

-- Any point on the hour, minute, or seconds-hand of an 'analog' clock.

-- The ball in the roulette wheel before it comes to a stop.

-- Any point on the rim of the Wheel of Fortune before it stops.

-- Any point on any propeller of a windmill, when the wind is blowing.

Answer 2

Answer:

$\green{\huge{\red{\boxed{\green{\mathfrak{QUESTION}}}}}}$

Define Circular motion and its types

$\huge\green{\boxed{\huge\mathbb{\red A \pink{N}\purple{S} \blue{W} \orange{ER}}}}$

${ \red{ \bold {\mathbb {\textit{Circular \: motion}}}}}$

MOTION OF THE BODY CIRCULAR PATH IS CALLED CIRCULAR MOTION

FEW IMP POINTS ABOUT IT :-

‌A tengential is always responsible for change in speed
‌If the Direction of acc and velocity is same then body's speed inc
‌If they r in oppsite direction then Body's speed dec .
‌If speed becomes constant then tangential acc become zero .
‌By the basis of tangial acc the circular motion is divided into two types uniform circular motion and non uniform circular motion

${ \blue {\bold{UNIFORM \: CIRCULAR}}} \n \green{ \bold{ MOTION}}$

‌when object in a circular path in a constant speed or constant circular speed is called uniform circular motion.
‌In case of uniform circular motion acc tendial will be zero
‌In case of uniform circular motion acc centripetal will be equal to net acc.

${ \green{ \bold{ NON UNIFORM}}} \n {\blue{ \bold{CIRCULAR \: MOTION}}}$

‌Centripetal acc is not equal net acc
‌Circular acc and tendial acc is not equal to zero .

$\pink{ \huge {\bold{EXAMPLES \ratio- }}}$

Earth revolving around the sun is an example of uniform circular motion
Spinning top rotation on its own axis is example of non uniform circular motion
Rotating/ moving blades of fan etc
a rotating stone lied to a rope

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B) mechanical motion.

C) heat and light energy.

D) electrical and heat energy.

Answers

In this case the stored chemical energy in the logs was changed into heat and light energy. The correct option among all the options that are given in the question is the third option or option "C". The logs started burning and this burning released the light energy and the heat energy. I hope this answer helps you.

The position of an object moving along a line at any time t 2 0 is given by the function s(t) = t3 – 9t2 + 18, where s is measured in feet and t is measured in seconds. A) Find the velocity of the particle at t = 4.

Answers

Answer:

S = t^3 - 9 t^2 + 18 position of particle

V = dS / dt = 3 t^2 - 18 t speed of particle at time t

V = 3 * 4^2 - 18 * 4 = 48 - 72 = - 24 ft/sec

A coil is connected to a 100v d.c. supply and takes a current of 10A. Calculate the value of the resistance of the coil

Answers

Resistance = (voltage) divided by (current)

Resistance = (100 volts) / (10 Amperes) = 10 ohms

What are the primary differences between stars and planets

Answers

Stars don't have moons and planets do

stars aren't big enough to emit enough kight and heat meaning they cant cause nuclear reactions

PLEASE HELP!! ILL MARK BRAINLYEST!!New substances are produced in a chemical change.

True
False

Answers

The Answer is true hope this helps

Which of the following group 7A elements is the most reactive?

Answers

Among the elements in group 7A, the most reactive would be Fluorine. Fluorine is a major component of toothpaste, what we use to brush and clean our teeth with. It is so reactive that it cannot be contained in glass.

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