PHYSICS MIDDLE SCHOOL

What are some examples of vascular plants?

Answers

Answer 1

Answer:

Hi Kayla

Examples are ;

1) Gymnosperms

2) Angiosperms

Hint; Gymnosperms create cones to house their seeds

Angiosperms; Create their seeds inside fruits

I hope that's help:0

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A 100 N force is applied to move a 15 kg object a horizontal distance of 5 meters at constant speed. * A 15 J B 150 J
C 1500 J
D 15000 J

Answers

Although this question doesn't ask a question, I'm guessing that the
question is probably "How much work is done in moving the object ?"

If my hunch is correct, then the answer is not listed among the choices.

Work = (force) x (distance)

= (100 N) x (5 m) = 500 joules.

Well whaddaya know! Maybe that wasn't the question.

Help me ASAP (this is science ;-;)

Answers

Go on .........I don’t see a question

There is no question on here

OK THIS WILL WORTH 25 POINTS IF BEST: WHAT IS THE ONLY NATURAL SUBSTANCE FOUND ON EARTH THAT CAN BE 3 STATES OF MATTER?

Answers

Every natural substance CAN exist as solid, liquid, or gas, if you make the temperature and pressure right. The only one that exists in all three states all the time, all around us, in the same range of temperature and pressure found naturally on Earth and in which we live comfortably, is water.

What is the force of gravity (from the Earth) on the 700kg satellite if it’s 10km above the Earth's surface?

Answers

Answer:

g = 4.7 × $10^(-16)$ m/ $s^(2)$

Explanation:

Given that the mass of the satellite = 700 kg, and 10,000 m above the earth;s surface.

From Newton's second law,

F = mg ............... 1

From Newton's gravitation law,

F = $(GMm)/(r^(2) )$ .................. 2

Where: F is the force, G is the gravitational constant, M is the mass of the first body, m is the mass of the second body, g is the gravitational force and r is the distance between the centers of the two bodies.

Equate 1 and 2 to have,

mg = $(GMm)/(r^(2) )$

⇒ g = $(GM)/(r^(2) )$

But; G = 6.67 × $10^(-11)$ N $m^(2) Kg^(-2)$ , M = 700 Kg, r = 10000 m

Thus,

g = $(6.67*10^(-11*700) )/(10000^(2) )$

= $(4.669*10^(-8) )/(1*10^(8) )$

= 4.669 × $10^(-16)$ m/ $s^(2)$

The force of gravity on the satellite is 4.7 × $10^(-16)$ m/ $s^(2)$ .

The force of gravity on a 700kg satellite 10km above the Earth's surface can be calculated using the equation F = mg.

The force of gravity on an object is given by the equation F = mg, where F is the force of gravity, m is the mass of the object, and g is the acceleration due to gravity.

On Earth's surface, the acceleration due to gravity is approximately 9.8 m/s^2. However, as the satellite is 10 km above the Earth's surface, the force of gravity will be slightly less than that.

To calculate the force of gravity on the satellite, we can use the equation F = mg. Substituting the mass of the satellite (700 kg) and the acceleration due to gravity (9.8 m/s^2 - (9.8 m/s^2 * (10 km/ 6371 km))), we can find the force of gravity.

Learn more about force of gravity here:

brainly.com/question/12753714

#SPJ3

What type of soil can become as hard as stone when dries out

Answers

maybe clay soil.............................

I dont think there is such type of soil. Soil is formed by weathering of rocks and held together by loose force. When any type of soil dries out, it becomes brittle. Thus, there is no such type of soil. yes, it can be clayey because it has higher density, but it does not become as hard as a ROCK when it dries out actually.

What is currently the most supported theory about the future of the universe A.)the universe could remain exactly as it is today
B.) the universe may continue to expand
C.) stars could burn out , causing the universe to become dark and cold
D.) gravity could pull galaxies back together causing a reverse of the Big Bang

Answers

Answer:

B.) the universe may continue to expand

Explanation:

The steady state theory which states that the universe was, is and will be the same, has been discredited by two physicists who found the leftover energy from the big bang.

If you are listening to FM radio, you might have heard some static noise while changing stations, that noise is from the leftover energy from the big bang. This energy is called the dark energy.

The dark energy tries to rip everything apart while gravity tries to hold everything together.

It was observed that the dark energy is stronger than gravity.

The distance between the galaxies is increasing. This proves that the dark energy successfully defeated the gravity and expanted two massive objects in the universe.

Because of this dark energy the universe will continue to expand.

Note: Dark energy is also increasing the distance between protons in atomic nucleus in every atom in our body too. Chilly right?

the answer is B! it would continue to expand.....just took the test XD

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