A train travels at an average speed of 25 miles per hour. How long does it take the train to travel 2000 miles?

Answers

Answer 1

nevermind. I was wrong. I didn't see the other answers


Related Questions

A. How many molecules of sugar are in 20.5 g of sugar?

Answers

Answer:

By definition, one mole (one gram molecular weight) of any substance, contains Avogadro’s number of particles; atoms if you are discussing an element, or molecules if a compound. Avogadro’s number has been determined by several methods, all of the accepted values lie within a range of +-1% about the value of 6.022045 x 10^23/gm. That is a large number, in this case approximately; 602,204,500,000,000,000,000,000 molecules of glucose.

1M is 1M 1M is 1M 1M is 1M 1M is 1M

Someone help me plz.

In each of the following pairs, circle the form of radiation with the LONGER WAVELENGTH:

A. red light or blue light

B. microwaves or radiowaves

C. infrared radiation or red light

D. gamma rays or UV rays​

Answers

Answer:

In the first one in a it is red light in b it is radio waves in c it is infrared radiation and d is UV radiation

Explanation:

The forms of radiation from the pairs listed that have longer wavelength are :

A) Red light

B) Radio waves

C) Infrared radiation

D) UV rays

Red light have a wavelength between 650 to 720 nm while a Blue light has a wavelength of 380nm to 500nm which makes it to produce a high energy  visible light.( HEV ) light. therefore the Red light has a longer wavelength.

The wavelength of a microwave is approximately  30 centimeters to 1 millimeter, which makes it shorter than the wavelength of a radio wave ( shortest wavelength in the electromagnetic spectrum.

Hence we can conclude that The forms of radiation from the pairs listed that have longer wavelength are A) Red light B) Radio waves C) Infrared radiation D) UV rays

Learn more about the electromagnetic spectrum : https://brainly.com/question/4533497


Mark is pushing a box down the hall. Mark is using 5N to push the box 20m. How much work is Mark doing?

Answers

The work by Mark : 100 J

Further explanation

Work is the transfer of energy caused by the force acting on a moving object  

Work is the product of force with the displacement of objects.  

Can be formulated  

[tex]\tt W=F\times d[/tex]

W = Work, J, Nm  

F = Force, N  

d = distance, m  

Mark is using 5N to push the box 20 m,

F = 5 N

d = 20 m

[tex]\tt W=5\times 20\\\\W=100~J[/tex]

the sum of all the kinetic energies of an object is it's​

Answers

Answer:

The sum of potential energy and macroscopic kinetic energy is called mechanical energy and stays constant for a system when there are only conservative forces (no non-conservative forces). The more mass a moving object has, the more kinetic energy it will possess at the same speed.

Explanation:

Answer: Mechanical energy

Explanation: The more mass a moving object has, the more kinetic energy it will possess at the same speed

- include the process that causes the sun to release so much energy
-The equation for the process that causes the energy. -show what is happening to all the energy coming from the sun.
-how does it affect earth and life on earth

Answers

Answer:   nuclear fusion, equation:(Z + N) in a nucleus of mass M. The formula is B = (Zmp + Nmn − M)c2, All of the energy from the Sun that reaches the Earth arrives as solar radiation, part of a large collection of energy called the electromagnetic radiation spectrum. Solar radiation includes visible light, ultraviolet light, infrared, radio waves, X-rays, and gamma rays. Radiation is one way to transfer heat.

Explanation: i explained everything in the answer hope this helped

Using the table on the right, perform the following metric unit conversions. Type your answer in the space provided.

0.001087 kg =
g

Answers

Answer:

1.087g

Explanation:

you can use the reminder King Henry Died By Drinking Chocolate Milk. You wanna that the period and move it right 3 times till you get to by.

Answer:

The first answer is 0.001087 kg =  1.087 g

The second answer is 25 mL =  0.025  L

Then the third answer is 531 ms =  0.531  s    

pleaseee help.....ASAP
will mark branliest!!
and give extra points!

Answers

Answer:

C

Explanation:

All three can become negative versions: negative ions

Answer:

It is going to be D because Group 1 A and 2 A are s block elements which are METALS, also they are not halogens as the 7 A group is called halogens, Plus they give +1 oxidation state so Correct answer is D as they are group 1 A elements so they have only one valence electron in their valence shell

How is Mass converted to the energy released in the fire

Answers

Answer:

The heat and light released by fire comes from the breaking of chemical bonds. ... The mass of each molecule, before burning, exceeds the total mass of its atoms by a tiny amount that is equivalent (through E=mc²) to the total energy of all its atomic bonds.

Explanation:

I hope this helps (:

List harmful effects of global warming? PLZZ HELP WHOEVER IS FIRST ILL MARK BRAINLEIST

Answers

Answer:

first theres the poliution  one of the biggest things thats starts global warming then theres recycle and non recycle because people mix there trash up when their not suppossed to.

Explanation:

Bonus question #2: Unknown element, Element X, exists in nature as two isotopes:
^{351}
351

X has a mass of 350.9196 u and
^{353}
353

X has a mass of 352.9209 u. The average atomic mass of Element X is 351.96 u. Calculate the relative abundance of the two Element X isotopes.

Answers

Answer:

Explanation:

your answer is 351.96 i not a 100 per sent right but that should be it

Examples of physical change include?

A. Melting
B. Boiling
C. Freezing
D. All of these are examples of physical change

Answers

Answer:

All of these examples are physical changes.

Explanation:

Physical changes are changes affecting the form of a chemical substance, but not its chemical composition.

_________ change is a change in matter that results in a material changing from one state to another without any change in chemical properties. Example: solid ice changes to liquid water.​

Answers

Answer:

Physical change

Explanation:

How does a rain gauge measure rainfall?
A.
by collecting rain in a measuring container
B.
by counting raindrops
C.
by measuring the sound of rainfall
D.
by measuring the darkness of clouds

Answers

a) by collecting rain in a measuring container
(explanation) a rain gauge is just a cylinder that will catch rain.
A, by collecting rain in a measuring container.

Do all metals have more electrons than protons

Answers

Answer:

no

Explanation:

What colors are the fireworks in the photo? How do you
think the matter and energy of fireworks of different colors are similar and
different?

Answers

Answer:

Shortly after, the electron will fall back down to a lower energy level, releasing energy in the form of light. Therein lies the key to colorful fireworks!

The matter and energy of fireworks simply rely on the flow of electrons from the ground stage to the excitatory stage.

What is Matter?

Matter may be defined as any sort of substance that is constructed of numerous types of particles that occupy physical space and possess inertia. In simple words, matter may be characterized as anything which occupies space and has mass.

When the electrons move from the ground stage to the excitatory stage, they require a significant amount of energy in any form. But when they fall back to the ground stage from the excitatory stage, they liberates energy.

The same principle is applied in the colorful observation of fireworks. The stored energy is released and different colors of fireworks become visible.

Therefore, the matter and energy of fireworks simply rely on the flow of electrons from the ground stage to the excitatory stage and vice-versa.

To learn more about Matter and energy, refer to the link:

https://brainly.com/question/23490755

#SPJ2

Which of these elements has an electron configuration of [Kr]5s2?
barium

calcium

rubidium

strontium

Answers

Strontium has an electron configuration of [Kr]5s²

Further explanation  

In an atom there are levels of energy in the shell and sub shell  

This energy level is expressed in the form of electron configurations.  

Writing electron configurations starts from the lowest to the highest sub-shell energy level. There are 4 sub-shells in the shell of an atom, namely s, p, d and f. The maximum number of electrons for each sub shell is  

s: 2 electrons  

p: 6 electrons  

d: 10 electrons and  

f: 14 electrons  

From an electron configuration of [Kr]5s² can be concluded :

element is in period 5 (5 = shell)element is group 2(valence electron =2 and block s) has atomic number 38 (Kr = 36 + 2(valence elektron from 5s²)

If we look at the periodic system, the elements that meet the requirements in question are Strontium (Sr)

Answer:

D) strontium

Which of the following is the unit of measurement used to describe the severity of an earthquake?

Answers

Answer:

Try magnitude.

Explanation:

Answer:

The Richter scale measures the largest wiggle (amplitude)

Explanation:

The Richter scale measures the largest wiggle (amplitude) on the recording, but other magnitude scales measure different parts of the earthquake. ... Intensity is a measure of the shaking and damage caused by the earthquake; this value changes from location to location.

Human body uses the energy provided from food digestion. Endothermic or exothermic?

Answers

Answer:

Endothermic

Explanation:

Exo is outside so exothermic would be outside the body

The carbohydrates are break down into glucose. Then glucose combines with oxygen in the cells and provides energy. Hence, digestion is an exothermic process.

What is an exothermic process ?

Food digestion produces heat. This happens as a result of the organism releasing heat during meal digestion. A process that releases heat is exothermic.

Heat is released during an exothermic reaction, raising the temperature of the immediate environment. The environment is cooled through an endothermic process that absorbs heat.

Glucose is created by the breakdown of these carbs. In the cells of our body, this glucose interacts with oxygen to produce energy. So, the process of digesting is exothermic.

Chemical processes involved in food digestion disassemble large food molecules into smaller, more manageable "building block" components.

Thus, Human body uses the energy provided from food digestion is exothermic process.

To learn more about exothermic process, follow the link;

https://brainly.com/question/12321421

#SPJ2

For the n = 3 electron shell, which of the following quantum numbers are valid? Check all that apply.

Answers

Answer:

The valid quantum numbers are l=0, l=-2 and l= 2.

Explanation:

Given that,

n = 3 electron shell

Suppose, the valid quantum numbers are

l = 3

m = 3

l = 0

m = –2

l = –1

m = 2

We know that,

The value of n = 3

Principle quantum number :

Then the principal quantum number is 3. Which is shows the M shell.

So, n = 3

Azimuthal quantum number :

The azimuthal quantum number is l.

[tex]l=0,1,2[/tex]

Magnetic quantum number :

The magnetic quantum number is

[tex]m=-2,-1,0,1,2[/tex]

Hence, The valid quantum numbers are l=0, l=-2 and l= 2.

Answer: I = 0  m = -2 m = 2

Explanation: Edge.

the correct answers to the second part of this are:

n = 1, I = 0, m = 0

n = 3, I = 0, m = 0

n = 5, I = 4, m = -3

C12H7Cl3FNaO2 what are the elements in that chemical formula

Answers

Answer:

hope it helped you

Explanation:

Sodium fluoride - 5-chloro-2-(2,4-dichlorophenoxy)phenol (1:1:1) | C12H7Cl3FNaO2 |

A snicker bar has 300. Kcal, how many Joules of energy does it contain?

Answers

Answer:

1255200J

Explanation:

1 cal = 4.184 J

1kcal = 4184 J

thus, 300 kcal= 4184 × 300

= 1255200J

= 1255.2 kJ

= 1.2552 MJ

pure sodium and chlorine are extremely dangerous, but when combined the result in substance that we use every day. How do you think the properties of sodium and chlorine change when they are combined to make sodium chloride?

Answers

Answer:

Explanation:

chlorine has 7 valence electrons while sodium has 1. on their own, they are very reactive elements. a full valence electron shell has 8 electrons, so when elements combine and have 8 electrons in their outer shell, they are not reactive. when sodium and chlorine are combined to form sodium chloride (table salt), it is no longer dangerous. the number of valence electrons changes its reactivity and how it combines.

The properties of sodium and chlorine change when they are combined to make sodium chloride should be explained below.

Information regarding chlorine:

chlorine comprises of 7 valence electrons while on other hand, sodium has 1.  A full valence electron shell contains the 8 electrons, so when elements combine and have 8 electrons in their outer shell, they are not reactive.

learn more about substance here: https://brainly.com/question/19287431

(this is 6th grade science so that’s the closet subject I could find) Do you know an adult who drinks coffee, tea, or soda pop? Think about that person and picture them in your mind. Write a description to help that person understand how they can smell their favorite beverage even though it’s a liquid.

Answers

Answer:

Well you could boil the liquid, That would make steam from the liquid. Noramlly you can smell steam.

Explanation:

The hybrid orbitals of a molecule are shown in the figure.
These hybrid orbitals were most likely formed by mixing
one s orbital and one p orbital.
one s orbital and two p orbitals.
one s orbital and three p orbitals.
O two s orbitals and two p orbitals.

Answers

Answer:

One s orbital and One p orbital

Explanation:

Based on your data, how are elements arranged into chemical families?

Answers

Answer:

Based on their groups

Explanation:

Answer:

They are arranged vertically depending on how many valence electrons they have, if they have the same amount, they will have the same chemical family in each column.

Write 657000 in scientific notation.

Answers

Answer:

600000+50000+7000

Explanation:

there are 20 _______ amino acids (9)

(fill in the blank)

Answers

Answer: different

Explanation: There are 20 different amino acids.

which solution is most likely to conduct electricity when it is dissolved in water?

a)CH3OH
b)C6H12O6
c)SrCl2
d)NH3

Answers

Explanation:

Glucose (C₆H₁₂O₆) is an electrolytes hence it conduct electricity.

Therefore,

Option B is correct.

Science investigation skills

Answers

People conduct scientific investigations by formulating a hypothesis and observing the results. They then draw conclusions from those results and then share those conclusions with the larger scientific community.

The nucleus is held closely together by?

Answers

The nucleus of an atom is held together by the strong nuclear force to hold together protons and neutrons. The strong nuclear force is stronger than electricity and gravity. It's even the strongest out of the four fundamental forces.

Other Questions
Summarize the criticisms of intelligence tests and the relationship between IQ test scores and job success SPONTANEOUS IMPROV IS... Find the measure of each angle. Assume the lines are parallel. why did Anne frank come for a visit The conversion of energy involve many chemical reactions taking place within an organism or the environment. What is the term for the energy needed to begin one of these reactions? A. reaction energy B. Activation Energy C. Absorption Energy D. Conversion Energy y=1/2(x+4)(x-2) vertex Question 1 with 8 blanks A ver, chicas! stos son los planes para maana. Presten atencin porque no quiero (1) 1 of 8maana. Which of the following is not equal to the rational number 7/4 ? Option 1: 14/8 Option 2: 10/7 Option 3: 1.75 Option 4: 1 3/4YOU COULD PICK MORE THEN ONE OPTION Which personal pronoun agrees with the noun "Tim?" Step 1: Select a two-digit number less than 100.Step 2: Add 3 to your number.Step 3: Double the result.Step 4: Subtract 9.Step 5: Multiply by 5.Step 6: Add 15.Step 7: Divide by 10Did you get your original number? Use algebra to show why this works. How isthis problem different from the previous problem?SOMEONE PLEASE HELPP MEEE!!! Write a proportion to find how many points x a student needs to score on a test worth 50 points to get a test score of 40% What is the range of this quadratic function? Which value of x makes the equation -5x-(-7-4x) =-2(3x-4 true? Wreh runs laps around a track every day after work. He runs at a constant rate and completes about 12 laps every 18 minutes.How many minutes does it take Wreh to run 30 laps?Solve this problem two different ways. Note: cross multiplication will only receive credit as one approach. What is the name of the island that Haiti and La Repblica Dominicans share? Whats the answer?????? what terms are components of body composition Answer key box Se , sabes, sabe , sabemos , saben , conozco , conoces , conoce , conocemos , conocen , saber , conocer Rewrite the range of each companys wireless access devices in feet using scientific notation. (5,280 feet =1 mile) Would you address your doctor using t orusted?1. t 2. usted