How is kinetic energy turned into electricity?

If I put one hand in hot tap water and the other in cold tap water then both in the same warm tap water what will happen

Natalija [7]

Answer:

you will feel warm

Explanation:

beacause your body will get the warm from warm water tap..

7 0

3 years ago

A ray of light strikes a smooth surface and is reflected. The angle of incidence is 35°. What can be predicted about the angle o

andreev551 [17]

By the law of reflection which says that the angle of reflection is equal to the angle of incidence, which in other words says, sin x = sin y, it can be said, based on the given that the angle of reflection is also equal to the angle of incidence of 35 degrees

5 0

3 years ago

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Consider two sizes of disk, both of mass M. One size of disk has radius R; the other has radius 4R. System A consists of two of

Harman [31]

Answer:

4 smaller disks

Explanation:

We are given;

Mass of smaller and larger disks = M

Radius of smaller disk = R

Radius of larger disk = 4R

Formula for moment of inertia about cylinder axis is:

I = ½MR²

Thus;

For small disk, I_small = ½MR²

For large disk, I_large = ½M(2R)² = 2MR²

We are told that moment of inertia of System A consists of two of the larger disks. Thus;

I_A = 2 × I_large = 2 × 2MR²

I_A = 4MR²

We are also told that System B consists of one of the larger disks and a number of the smaller disks. Thus;

I_B = I_large + n(I_small)

Where n is the number of smaller disks.

I_B = 2MR² + n(½MR²)

I_B = MR²(2 + n/2)

We are told that the moment of inertia for system A equals the moment of inertia for system B. Thus;

I_A = I_B

So;

4MR² = MR²(2 + n/2)

MR² will cancel out to give;

4 = 2 + n/2

Multiply through by 2 to give;

8 = 4 + n

n = 8 - 4

n = 4

5 0

3 years ago

You are on a school bus driving north at 20 m/s. You walk toward the back of the bus with a velocity of 6 m/s. What is your velo

Ganezh [65]

I answered the question but it got deleted?? why?

3 0

3 years ago

Fill in the blanks in the following paragraph to identify the properties of mirrors and lenses.

KATRIN_1 [288]

Answer:

Lenses produce images through REFRACTION but mirrors produce images through REFLECTION.

CONVEX lenses and CONCAVE mirrors focus light at a point. CONVEX mirrors and CONCAVE lenses spread light apart.

Explanation:

Refraction guides the image formation for lenses. Light rays are bent or refracted at both surfaces of the lens as they pass through it. With this, various effects can be obtained by focusing light rays on different range of curvatures of the lens.

Reflection guides the formation of images by plane and curved mirrors. Light rays change direction as they travel through a continuously changing medium. The law of reflection states that the angle of reflected ray is equal to the angle of incident ray upon reflection from a smooth surface.

A convex lens is curved outward causing the parallel light rays passing through it to be refracted inward. They meet at a focal point and focuses light at a single point likewise concave mirror.

A concave lens is curved inwards and light rays passing through it are refracted outward, spreading light apart which is also an action of convex mirror.

4 0

3 years ago