Chemistry High School


Calculate the speed of a bicycle
traveling 20 km in 2 hours. Show the
formula, and your work with the correct
units. HELP PLEASE AND HURRY

Answers

Answer 1

Answer:

10 km/hr

............

Calculate The Speed Of A Bicycletraveling 20 Km In 2 Hours. Show Theformula, And Your Work With The Correctunits.
Answer 2

The speed of a bicycle is 10 km/hour or 0.27 m/sec.

What is the Speed?

The speed may be defined as the rate of change of position of an object in any direction. It is significantly measured as the ratio of distance to the time in which the distance was covered.  Speed is a type of scalar quantity that has only direction but no magnitude.

According to the question, the distance traveled by bicycle = 20 km or 2000 meters.

The total time is taken = 2 hours or 7200 seconds.  

Now, the formula for calculating the speed is as follows:

S = Distance/ Time = 20km/2 hours = 10 km/hour.

S = Distance/ Time = 2000 meters/7200 seconds = 0.277 m/sec.

Therefore, the speed of a bicycle is 10 km/hour or 0.27 m/sec.

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Related Questions

What is the hybridization of the carbon in the HCN molecule?

Answers

Could you mark me as brainliest?

Answer: sp hybridization

I literally forgot!
What is chemistry?​

Answers

Answer:

Chemistry, the science that deals with the properties, composition, and structure of substances (defined as elements and compounds), the transformations they undergo, and the energy that is released or absorbed during these processes

Answer:

hope it helps you a little

You are sitting in the central park bleachers of a Major League baseball park. You see a batter strike a pitched ball. About 0.4 seconds later you hear the contact between the bat and the ball. In terms of the properties of light and sound waves, how do you explain the difference in the communications you receivedbabout the same event?

Answers

Answer:

See the answer below

Explanation:

The speed of light in air and space is faster than the speed of sound in the same media. Light travels with a speed of approximately 3 x [tex]10^8[/tex] m/s while sound can only travel at 343 m/s (at 20 [tex]^oC[/tex]).

Consequently, the visuals of a batter striking a pitched ball which travel by light and is perceived through the eyes would be seen before the sound of the strike.

The difference in the speeds of light and that of sound largely explains the difference in the communication received about seeing a batter striking a pitched ball before hearing the sound of the strike

Carbon tetrafluoride, CF, contains four identical C-F bonds. Fluorine is more
electronegative than carbon. How will this impact each of the bonds between carbon and
fluorine?
a. The electrons in each C-F bond will be more attracted to the carbon atom.
b. The electrons in each C-F bond will be attracted equally to both atoms.
C. The electrons in each C-F bond will be more attracted to the fluorine atom.
d. The electrons in each C-F bond will separate easily.

Answers

Answer:

C. The electrons in each C-F bond will be more attracted to the fluorine atom.

Which of the following is true about chemical reactions?

They are accompanied by changes in energy.
They form new substances with new properties.
both A and B
neither A nor B

Answers

B) they form new substances with new properties.

Answer:

B : THEY FORM NEW SUBSTANCES WITH NEW PROPERTIES .

1. Which of the following is a typical characteristic of ionic solids?
A. low melting point
C. no conductivity in solution
B. soft and malleable
D. neutral net charge

Answers

The answer is D. Neutral net charge

Please help I will mark brainy

Answers

Answer:

the answer is c I took the test

which information does the chemical formula co2 not give you?
A. number of valence electrons in each atom
B. ratio of atoms in the compound
C. total number of atoms in one molecule of the compound
D. type of elements in the compound

Answers

Answer:

A

Explanation:

Considering the definition of chemical formula, the correct answer is option A): number of valence electrons in each atom.

A chemical formula is the representation of the elements that make up a compound and the proportion in which they are found, or the number of atoms that make up a molecule.

In other words, a chemical formula is an alphanumeric expression that is used to indicate the composition of a chemical substance and that is constructed from the symbols of its constituent elements, affected by numerical subscripts that report the number of atoms of each element that it is part of the substance.

In summary, the correct answer is option A): number of valence electrons in each atom.

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Justify the placement of element II (Chlorine), on the periodic table, within its group and period.

Answers

It is the 17th element in period 3 group 17 which is called the halogen group


Which of these is NOT a planet due to its small size and lack of dominant
gravitational pull?
()Saturn
()Mercury
()Uranus
()Pluto

Plss help :)

Answers

Answer:pluto

Explanation:

Since 2006, per the International Astronomical Union's planetary criteria, Pluto isn't considered a planet because it hasn't cleared the neighborhood around its orbit of other objects.

Answer:

Pluto

Explanation:

Saturn is huge, second biggest plant in our solar system

mercury is big same with Uranus

and Pluto is closer to a moon than a planet

Which formula represents an ionic bond? 1 NaCl 2 N2O 3 HCl 4 H2O

Answers

Answer:

1 NaCl

Explanation:

NaCl is sodium chloride, and sodium chloride is an ionic compound because it's held together with ionic bonds.

The gas could be which of the following? Select all that apply. Hint: These gases are more dense than air. Nitrogen Neon Argon Carbon Dioxide Helium Hydrogen Propane Carbon Monoxide
​

Answers

Answer:

nitrogen, oxygen, carbon dioxide, argon, hydrogen, helium

Explanation:

Help fast please What is the definition of homeostasis?
A. Your body out of balance
B. Being sick
C. Your body not needing any regulation
D. Your body systems staying in balance

Answers

Answer:

I think its D

Explanation:

Answer:

D

Explanation:

It's B because homeostasis is the ability to maintain a relatively stable internal state that persists despite changes.

Hope this helps!!! If this is incorrect, I'm so sorry! Have a lovely day.

Help plz 15 pointsss

Answers

1. Transition metals
2. Halogen
3. Noble gas
4. Metals
5. Metalloids
6. Non metal

2. The heat energy fequired to change a
unit mass of a solid into a liquid at
constant temperature is called
(1) heat of vaporization
(2) heat of formation
(3) heat of solution
(4) heat of fusion

Answers

Heat of solution (I believe)

how much heat is absorbed when 15.0 g of liquid water is heated until the temperature increases by 16.0.

Answers

n snsnnsnansnannnans

The yield ( → ) symbol always points to the

Answers

I dont get what the question is?? im so sorry!

How much oxygen (O) is in 5.41 × 106 atoms of oxygen

Answers

Answer:

They show you  how to do it sweetie

Explanation:

123456789 Common math

WHAT DOES THE MASS OF AN OBJECT MEASURE HURRYYYYYYYYYYYYYYYYYYYYY

Answers

Answer:

object's inertial property

Explanation:

The mass of an object is a measure of the object's inertial property, or the amount of matter it contains. The weight of an object is a measure of the force exerted on the object by gravity, or the force needed to support it. The pull of gravity on the earth gives an object a downward acceleration of about 9.8 m/s2.

Answer:

The mass of the object internal property, or the amount of matter it contains

Explanation:

Hope this helps! Happy Holidays!

What is the subscript of 3MgC12

Answers

I’m not entirely sure buh i think Mg would be 3 and C would be 12

an atom has 11 protons, 12 neutrons, and 11 electrons. what is the charge of the atoms nucleus?
A) +11
B) -11
C) 0
D) 23

Answers

Answer:

Since sodium has 11 protons, the number of neutrons must be 23 – 11 = 12 neutrons.

Explanation:

Please help I really need but this time I'm fr I don't have much time ill mark brainliest

Answers

Answer:

i fi am not wrong the correct answer is  D

Explanation:

Answer:

The answer is D

Explanation:

More height= more potential energy

how does an electron emit light?

Answers

Answer:

by moving between defined energy levels

Why is sublimation such a critical component for the water cycle in cold climates?

Answers

The air is so dry that when it hits a snowpack, the frozen water evaporates, going directly from the ice to vapor and bypassing the liquid phase entirely. This is called sublimation, and it's a common way for snow to disappear in the arid West."

Answer:

Sublimation is the transition in physical state from solid (ice) to vapor with no intermediate liquid stage. In other words, the ice becomes water vapor without melting. Ideal weather conditions would be low humidity (to allow vaporization), high altitude (lower air pressure facilitates the transition), and strong sunlight (to provide the energy for the transition). High snow-packed mountain ranges offer all of these conditions. Since the temperature is too cold for evaporation, sublimation is needed to provide enough water vapor to feed the water cycle and promote precipitation elsewhere on the planet. Without it, the water would stay frozen in the snow and ice and reduce the amount of liquid water that would replenish the planet.

Explanation:

plato

Arrange the following elements in order from lowest to highest first ionization energy : , Ar , Cs, Na *

Answers

Lowest Cs, Na, highest is At

Answer:

Lowest Cs, Na, highest is At

Explanation:

Which element is probably most like Carbon? and why

Answers

Silicon because it is abundant on Earth. Also, carbon and silicon are both building blocks of life.
It is silicon. It is the second element in the line of metalloids, which makes it extremely chemically similar to carbon in terms of protons and electrons

what is the density of a liquid if it's volume is 125 mL and it's mass is 50g?

Answers

Answer:

0.4g/ml

Explanation:

density= mass/volume

density=50g/125ml

density=0.4g/ml

help me its is hard..

Answers

Answer:

800 kJ

Explanation:

Answer:

800 kj

Explanation:

the line is at 800

Eating around chemicals in the work place is considered safer because today’s chemicals are more diluted than in the past

Answers

Eating around chemicals in the workplace is considered safe because today's chemicals are more diluted than in the past. Hazard tio

Which of the following atoms has the highest first
ionization energy?
a. helium
6. potassium
d. hydrogen
e. carbon

Answers

Answer:

Helium

Explanation:

The first ionization energy varies in a predictable way across the periodic table.

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