PHYSICS MIDDLE SCHOOL

Which of he following is the best example of potential energy a:a bird making a nestB:a car stopped at the top of the hill
C:a gymnast doing a cart wheel
D:a swimwear doing the backstroke
Please answer asapppppp I need help

Answers

Answer 1

Answer:

I think it's B. A car stopped at the top the hill

Answer 2

Answer:

A: bird making a nest

I may be wrong. Hope it helps.

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What is the center of atom called??

Answers

Nucleus is the center of an atom

Nucleus are the center of an atom just like he said down below

The Earth's axis of rotation is tilted. Because of this, the amount of sunlight an area on the planet receives each day variesdepending on the time of year. These variations result in four distinct seasons.
The diagram below shows the Earth at one particular point in its yearly revolution around the Sun.
Image courtesy of NASA
When the Earth is in the position shown above, the Northern Hemisphere experiences the start of
hemisphere is tilted
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because that

Answers

Answer:

the answer is the one that is tilted away from the sun because that is winter

Explanation:

i hope that i helped

20. There are two electrical devices, one is electrical kettle of 2KW-200V andnext one is electrical heater of 1KW-240 V. Which device has highest
resistance?

Answers

Electrical kettle:

P = 2 KW = 2000 W

U = 200 V

⇒ I = P/U = 2000 / 200 = 10 A

We apply the Law of Ohm:

R = U / I = 200V / 10A = 20 Ω

=======

Electrical heater:

P = 1 KW = 1000 W

U = 240 V

⇒ I = P/U = 1000 / 240 = 4,16 A

We apply the Law of Ohm:

R = U / I = 240V / 4,16A = 57,69 Ω

Answer:

The device with the highest resistance is the electric heater.

Lenses in eyeglasses change the direction of light rays to help the lens of the eye form an image inside the eye . What process take place in the eyeglass lenses ?

Answers

To make this process happen, the eye contains a lens between the retina and the pupil. The lens and the cornea, a transparent covering, then work together, focusing the image on the retina. Vision problems occur when the image focused on the retina is focused either too far back, resulting in farsightedness or too far in, resulting in nearsightedness. In combination with these conditions, glasses may also work to assist with those suffering from crossed eyes, where the eyes refuse to focus together, which produces two of the same object in the field of vision, which results in blurriness of both objects. How glasses correct these problems is determined by what kind of lens the glasses are made of. The two types of lenses are the plus and minus lens. The plus lens has a convex shape, which focuses images on the retina when the eye’s lens originally focuses the image too far back. The minus lens has a concave shape, which focuses images on the retina when the eye’s lens originally focuses the image too close. Different strengths of these lenses determine how far back or how far forward the focus should be brought so that the image is displayed correctly on the retina.

How can you increase the momentum of an object? Explain.

Answers

if you increase either mass or velocity the momentum of an object increases proportionally if you double the mass or velocity you double the momentum.

Mass and velocity are both directly proportional to the momentum. If you increase either mass or velocity, the momentum of the object increases proportionally. If you double the mass or velocity you double the momentum.

The momentum is given by:

P=mv

Where P is momentum.

m is mass and v is velocity.

Therefore, the momentum is increased either by increasing mass or velocity.

To know more about momentum:

brainly.com/question/24030570

#SPJ6

if you increase either mass or velocity the momentum of an object increases proportionally if you double the mass or velocity you double the momentum

The rotational speeds of four generators. are listed in RPM arrange the generators in order based on the electric fields they create. Start with the weakest electric field and end with the strongest. Assume that the generators are identical except for their speed