Physics, 09.10.2019 09:30 abalaam

What is centripetal force and where might you find an example?

Answers: 3

Show answers

Answers

When there is no force acting on a moving object, it just
keeps on moving in a straight line. It takes force to pull
the object away from a straight line.

Whenever anything moves in a curve, there's a force on it,
pulling it toward the center of the curve. That's called a
"centripetal" force.

I think the easiest example to understand is spinning a stone
or a yo-yo around your head on the end of a string. The object
is moving in a circle, and the force that's keeping it on the circle
is the tension in the string. If the string suddenly breaks, then
that force suddenly goes away, and the object suddenly stops
moving in a circle ... it takes off in a straight line, in the direction
it was moving on the circle at the instant when the string broke
and the centripetal force stopped.

But examples are everywhere ... wherever you see something
that's moving in a curve and not in a straight line.

A fun one to talk about is things in orbit ... the Earth around the
Sun, the Moon around the Earth, Jupiter's moons around Jupiter,
and TV satellites and the International Space Station around the
Earth. An orbiting object might not exactly move in a circle, but it
moves in a path that's always curved, so there's a centripetal force
acting on it all the time. Where does that force come from ?

Where ?

Why, it's the force of gravity between the two objects, always
trying to pull them together !

Answer from: Quest

Divide 108.2 x 10^6 into 1.5 x 10 and the result will be in au (astronomical units)

Answer from: Quest

answer;

d. are made mostly of liquid

explanation;

-the general composition and structure planets includes; they have a thick gas and liquid layer covering a small,solid core. mostly the gases are hydrogen and helium atmosphere and layers of liquid hydrogen. for instance neptune and uranus are examples of the outer planets, they have a core covered by ice and ammonia.

-neptune's atmosphere is hydrogen and helium with a bit of methane so there is no oxygen to breath and the interior is made up of frozen water and ammonia with a rock and iron core. thus, there is no liquid water or solid surface to survive.

Another question on Physics

Physics, 21.06.2019 23:30

The most important difference between a wedge and an inclined plane is a. their size b. their shape c. how they are used d. what they are made of

Answers: 1

Answer

Physics, 22.06.2019 17:30

Chameleons catch insects with their tongues, which they can rapidly extend to great lengths. in a typical strike, the chameleon's tongue accelerates at a remarkable 220 m/s2 for 20 ms, then travels at constant speed for another 30 ms.

Answers: 1

Answer

Physics, 23.06.2019 02:30

Aproton is shot from the negative disk toward the positive disk. what launch speed must the proton have to just barely reach the positive disk?

Answers: 2

Answer

Physics, 23.06.2019 06:30

If a car is traveling on the highway at a constant velocity, the force that pushes the car forward must be a. equal to the weight of the car. b. less than the force of friction exerted upon the car. c. equal to the force of friction exerted upon the car. d. greater than the weight of the car.