This list shows the heights in feet of the 30 tallest mountains in the United States. 14,269 14,361 14,470 14,831 16,237 14,270 14,370 14,494 14,950 16,390 14,286 14,410 14,500 15,300 16,500 14,294 14,420 14,530 15,638 17,400 14,309 14,421 14,573 15,885 18,008 14,345 14,433 14,730 15,979 20,320 Jennifer is making a frequency table for the mountain heights. She has created 7 intervals of 1000 feet as shown below. U.S. Mountains Height (ft) Tally Frequency 14,000 - 14,999 15,000 - 15,999 16,000 - 16,999 17,000 - 17,999 18,000 - 18,999 19,000 - 19,999 20,000 - 20,999 What are the frequencies for each interval? a. Frequency. 20, 4, 3, 1, 1, 0, 1. c. Frequency: 20, 3, 4, 1, 0, 1, 1. b. Frequency. 19, 5, 3, 1, 1, 0, 1. d. Frequency: 19, 5, 3, 1, 0, 1, 1. Please select the best answer from the choices provided A B C d

Answer:

250cm or 2.5m

Explanation:

using direct variation

the length is = l

the time (year) = t

let k be the constant

so he have:

l=kt

2.5=k× 1

k= 2.5

Now in the next statement the 100 is given but not the length so

l=kt

~ l=k× 100 years

But k = 2.5

so :

l= 2.5×100

l= 250 cm

Hence it will be 250cm or 2.5m at which they will get separated

Answer:

distance = speed × time

= 55m/s × 90s

= 4950 m

Answer:

1 - 52x10^-15 m

2 - 12x10^-18 m

3 - 26x10^-3 m

4 - 69x10^-12 m

5 - 0.085 meters

Explanation:

Answer:

THE ANSWER IS OPTION C.

Answer:

Volume I think

Explanation:

Answer:

A. volume and D. mass

Explanation:

Density is the amount of matter (mass) in a given space (volume).

The density of an object can be found using the following formula:

d=m/v

where m is the mass and v is the volume.

In order to find the density, you must know the mass and the volume of the object.

Therefore, the correct answers are A. volume and D. mass.

Products such as antifreeze are composed of organic compounds that are classified as alcohols. (a)

Maybe those other classes of chemicals also lower the freezing temperature of water, just like alcohol does.  I don't know.  But alcohol is what's used to make anti-freeze.  I'm guessing alcohol must be cheaper, less toxic, and less corrosive inside the engines' cooling systems than any of that other stuff is.

Answer:

The first 2 advantages of wind a source of electricity is that it provides you wifi and wind. 2 disadvantages of wind as a source of electricity is that to much wind could knock it down or slow down the source of the electricity.

Explanation:

I know this because i read a article on it.

Answer:

Removing some of the books reduced the mass of the box, and less force was needed to push it across the floor.

Answer: C

Telescope

Explanation: A telescope is an optical device in which scientists ( astronomers) use to view far away distance objects in the universe.

The single invention of the telescope has advanced what we know about the universe more than any other scientific technology. Because with the use of telescope alone, astronomers could view and study many heavenly objects or bodies and many planets in the universe.

The optical instrument makes very far distant objects appear magnified by using an arrangement of lenses or curved mirrors and lenses for clearer viewing of heavenly objects and planets in our universe.

Answer:

171

Explanation:

To work out average speed, you have to do distance divide by time.

1026 divide by 6= 171

I hope that helped you.

Answer:

F = 2520 N

Explanation:

We have,

The maximum acceleration of a fist in a karate punch is 4200 m/s². The mass of the fist is 0.6 kg.

It is required to find the force that the wood place on the fist. Force is given by the product of mass and its acceleration such that,

F = ma

[tex]F=0.6\times 4200\\\\F=2520\ N[/tex]

So, the force of 2520 N is acting on the wood.

Answer: D

Height of marble from ground

Explanation:

From the formula of kinetic energy and potential energy,

K.E = 1/2mv^2

While

P.E = mgh

From all the parameters given from the question. You can see that mass is constant, acceleration due to gravity is also constant.

Independent variable must be a value that can varies.

Since Jack rolled a marble down a ramp and recorded the potential energy and kinetic energy of the marble at different positions on the ramp to see the effects on both energies.

This different position must be the height which will produce an effect on the potential and kinetic energy of the marble.

Independent variable always provides an effect for dependent variable. Which are kinetic energy and potential energy in this case.

Height of marble from ground is the right answer.

Answer:

The Correct Answer is D

Height of marble from ground

Explanation:

Answer:

i think the aswers is C,

Answer:

67.7 N

Explanation:

Draw a free body diagram of the person on the sled.  There are four forces:

67.7 N  to the right,

friction force to the left,

weight force down,

and normal force up.

Constant velocity means 0 acceleration.

Sum of the forces in the x direction:

∑F = ma

67.7 N − F = 0

F = 67.7 N

Answer: Option B

Explanation:

The nuclear force is the strongest force in the universe. It is much more stronger than all the other forces and is 100 times stronger than the electric force.

The nuclear forces can be defined as the forces generated due to electron and protons in which the electrons have negative charge on it and the protons have positive charge on it.

Due to this force all the atoms and molecules, elements and compounds are held together.

Answer:

c

Explanation:

edge 2021

Answer:

c. tectonic plates

Explanation:

Answer:

the answer is rock masses

Answer:

c. A Generator

Explanation:

The whole point of a generator is to produce electrical energy. The generator will use a mechanical motor usually running off of gas to produce electricity.

Answer:

a theory is based on personal feelings but a law is based on testable evidence because a law is universal and constant fact of nature it is also an irrefutable theory a theory can become a law but a law can never become a theory it is based several scientific experimenrs

Explanation:

i hope this will help you

Answer:

C

Explanation:

To answer this problem, we must identify what range is. Range is the difference between the smallest and largest numbers in a set of data. Remember it can be helpful to order your sets of numbers from least to greatest to help you, but it is not mandatory.

Lets take this information for the data sets provided.

For Set A: 100 - 10 = 90, so this won't work.

For Set C: 50 - 10 = 40, this will work.

We know that set c works, so there is no need to move further.

The answer is letter c

Answer: Straight :)

Explanation:

LIght rays travel in straight paths and it is impossible for them to travel in curved, unpredictable, and changing paths

Answer:

9.8m/s²

Explanation:

An object experiening a free fall is simply under the influence of gravity.

When an object is influenced by gravity, the object falls with an acceleration known as acceleration due to gravity.

This acceleration known as acceleration due to gravity has a constant value of 9.8m/s².

Answer:

Mass of ball = 3.0102 Kg.

Explanation:

Potential energy at height h is given by

PE = mgh

where m is the mass of the body

g is the the acceleration due to gravity whose value is 9.8 m/s^2

h is the height from surface level

PE is potential energy

In the problem given h = 2 meters

PE = 59 joules

59 = m*9.8*2

=> m = 59/9.8*2 = 3.0102 Kg

Thus, mass of ball is 3.0102 Kg.

Answer:

3

Explanation:

Top person is wrong

just did lesson

Answer:

4778.4 cm³

Explanation:

Answer:

Glad you asked that!

Explanation:

Actually,no.You see,if the earth was perfectly straight,then the northern hemisphere and southern hemisphere would have the same seasons,which is pretty much the world.But our world is tilted,so we happen to have differences for southern hemisphere and northern hemisphere.