PHYSICS MIDDLE SCHOOL

HELP FAST CORRECT ANSWERS ONLY 20PTSSelect the correct locations on the image.

Where would you expect a hot main-sequence star with high luminosity to be located on the following HR diagram?
HELP FAST CORRECT ANSWERS ONLY 20PTS Select the correct locations - 1

Answers

Answer 1
Answer:

Answer:  Between -5 and 0

Explanation:
Answer 2
Answer:

Answer:

between 0 and -5

Explanation:

Plato/Edmentum

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Name three insulators

Answers

Paper, rubber and glass are some examples of insulators.
Bubble wrap, wood, plastic and rubber

When parts of your body functions as lever systems, what part supplies the force?

Answers

Muscles supply the force.  They exert force by getting shorter (contracting).
A muscle can't get longer by itself.  There needs to be another muscle
pulling in the opposite direction.

a student viewing a cell with a microscope observe a cell wall, a cell membrane,and a nucleus. The presence of these structures indicates that the student is looking at a cell from a

Answers

The answer should be Plant Cell

What is the period of a wave generated by anearthquake, if it has a wavelength of 500 meters and a
speed of 5,000 meters per second?

Answers

Answer:

Period T = 0.1 second

Explanation:

Given that the

wavelength = 500 meters

speed V = 5000 meters per second

The wave speed is the ratio of wavelength to period of the wave. That is,

V = λ/T

Where

V = wave speed (m/s)

λ = wavelength (m).

T = period (s)

Using the formula above gives

5000 = 500/T

Make T the subject of formula

T = 500/5000

T = 0.1 s

A soccer ball is kicked horizontally off a bridge with a height of 36 m. The ball travels 25 m horizontally before it hits the pavement below. What was the soccer ball’s speed when it was first kicked

Answers

Answer:

9.23 m/s

Explanation:

Let, the initial velocity be ux.

The horizontal velocity remans the same. So, time required, t = 25/ux

For vertical component, we know,

h = uy*t + (1/2)*g*t^2    [ g is positive because ball is falling downward ]

Putting in the values, we get,

36 = 0*(25/ux) + 1/2 * 9.81 * (25/u)^2

36 = 3065.625/u^2

u^2 = 85.15625

u = 9.23

[ If there's a problem with the solution, please inform me ]

What is the cell theory?

Answers

cell theory is a scientific theory which describes the properties of cells. These cells are the basic unit of structure in all organisms and also the basic unit of reproduction.
Typically, there are 3 parts to it: all living things are made of cells; cells come from pre-existing cells; the cell is the basic unit of structure and function in an organism.
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