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4 years ago

think of two school rules and briefly describe how these rules help protect health and why its important to follow them.

Physics

2 answers:

Softa [21]4 years ago

5 0

Answer:

Wash your hand when you are done using the restroom because you could spread germs if not.

Don't come to school if you are sick because then you will get others sick.

Explanation:

ipn [44]4 years ago

5 0

No running in halls:

The reasons i chose this is because if you run in the halls, you might trip on something and fall onto the floor. You could injure your face, and might get a tooth fallen out. If you walk, thenyou will know where you're going.

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A 790N person runs up a flight of 40 stairs (.25m for each step) in 20 seconds, and then down 10 steps in 5 seconds. How much to

Romashka [77]

A person runs up 40 stairs and then come down 10 steps

So total stairs upwards is given as

$N = 40 - 10 = 30$

now here we will have total height reached

$H = N\times h$

$H = 30 \times 0.25 = 7.5 m$

Now total energy used or mechanical work done is

$W = mgH$

$W = 790 \times 7.5 = 5925 J$

Now the mechanical power is given as

$P = \frac{W}{t}$

$P = \frac{5925}{20+ 5} = 237 W$

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3 years ago

How does the force on the rifle compare with the force on the bullet, and why?

I am Lyosha [343]

They are equal and opposite (action and reaction)

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3 years ago

Physical anthropology studies _____. the weather the human body the physics of death the material evidence collected at a crime

Elenna [48]

Physical anthropology studies the human body. This discipline is aimed at analyzing the evolution and diversity of human beings.

<h3>What is physical anthropology?</h3>

Physical anthropology is a branch of anthropology that studies the evolution and diversity of human beings.

Physical anthropology is also called biological anthropology due to its close relation with biological sciences.

This branch of anthropology (physical anthropology) is aimed at assessing the evolution and physical variation and/or behaviors of human beings.

Learn more about physical anthropology here:

brainly.com/question/8311728

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3 years ago

The unit of length most suitable for measuring the thickness of a cell phone is a

Elis [28]

centimeter or millimeter.

Explanation:

The unit of length most suitable for measuring the thickness of a cell phone is centimeter or millimeter.

Length refers to how long a material is.

There are different units of length.
Smaller units that are microscopic are used to measure length dimensions that are very small
For example, nanometre is used to express microscopic length values.
Centimeters and millimeters are used for small dimensions that we can easily see.
Longer lengths can take the order of a yard, kilometer, miles e.t.c

Learn more:

Length brainly.com/question/13035995

#learnwithBrainly

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4 years ago

An elevator lifts a total mass of 1800 kg, a distance of 60 m in 60 s. How much power does the elevator generate?

emmainna [20.7K]

Answer:

17640

Explanation:

Power = workdone/time

Power = (force x displacement)/time

Power = (mg x 60)/60

Power = (1800 x 9.8 x 60)/60

=> power = 17640 watt

3 0

3 years ago