Gravity is a force that every mass exerts on every other mass. When you jump up in the air, not only does the Earth
exert a gravitational force on you, but you also exert a gravitational force on the Earth. You, of course, fall back down to
the Earth. Which of the following explains why the Earth is not moving toward you when you jump up in the air?
A. Earth exerts a gravitational force on itself.
B. You don't weigh enough to affect Earth's surface.
C. Your mass is very small compared to Earth's mass.
D. Earth's fixed orbit around the Sun keeps it from moving
Answer:
Brainliest A and I want brainliest please
Explanation:
That pull is gravity at work. Every object in the universe that has mass exerts a gravitational pull, or force, on every other mass. The size of the pull depends on the masses of the objects. You exert a gravitational force on the people around you, but the Gravity or gravitational forces are forces of attraction. We're not talking about finding someone really cute and adorable. It's like the Earth pulling on you and keeping you on the ground. That pull is gravity at work.
Every object in the universe that has mass exerts a gravitational pull, or force, on every other mass. The size of the pull depends on the masses of the objects. You exert a gravitational force on the people around you, but that force isn't very strong, since people aren't very massive. When you look at really large masses, like the Earth and Moon, the gravitational pull becomes very impressive. The gravitational force between the Earth and the molecules of gas in the atmosphere is strong enough to hold the atmosphere close to our surface. Smaller planets, that have less mass, may not be able to hold an atmosphere.at force isn't very strong, since people aren't very massive.
Obviously, gravity is very important on Earth. The Sun's gravitational pull keeps our planet orbiting the Sun. The motion of the Moon is affected by the gravity of the Sun AND the Earth. The Moon's gravity pulls on the Earth and makes the tides rise and fall every day. As the Moon passes over the ocean, there is a swell in the sea level. As the Earth rotates, the Moon passes over new parts of the Earth, causing the swell to move also. The tides are independent of the phase of the moon. The moon has the same amount of pull whether there is a full or new moon. It would still be in the same basic place.
What are atoms? What do we use it for
Answer:
atoms are everything and they are use to create anything and everything
Answer:
Atoms are composed of subatomic particles that are the building blocks of life
What is the chemical symbol for salt?
Answer: chemical formula of table salt is NaCl
Explanation:
All answers must have the correct unit! (g/mL) d= mass/volume, d= masa/volumen
Find the density of the following:
A. A substance with mass of 35.0 g and occupies 25.0 mL
B. A substance that has a mass of 45.0 g and occupies 2.00 L (remember what the units for density we use are)
C. A substance with mass of 2750 g and occupies 250 mL
heh.......... sorry man............... but this was posted over 5 hours ago........ so nobody is gonna see it and you probably dont need the answer anymore..... so errrr..... imma justtttt..... take these points :D
Air is made up of different gases such as oxygen nitrogen and carbon dioxide
Forces and Motion:Question 1
A rider on a bicycle travels north for 1.5 hours and covers a distance of 18
kilometers. What is the velocity of the bicycle?
Answer:
Velocity = 12 km/h
Explanation:
Velocity can be defined as the division between distance traveled and the time it took for that distance to be traveled:
Velocity = Distance / TimeWith the above information in mind, we can calculate the velocity of the bicycle:
Velocity = 18 km / 1.5 hVelocity = 12 km/hThus the velocity of the bicycle is 12 kilometers per hour.
An unknown liquid fills a 200 ml cylinder and has a mass of 150g. Calculate the density./
Answer:
0.75 g/mLExplanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\[/tex]
From the question we have
[tex]density = \frac{150}{200} = \frac{3}{4} \\ [/tex]
We have the final answer as
0.75 g/mLHope this helps you
what is the product of the combustion of hydrogen
Answer:
Hydrogen burns in oxygen to form water. The flame is almost colourless. Mixtures of hydrogen and oxygen (or hydrogen and air) can be explosive when the two gases are present in a particular ratio, so hydrogen must be handled very carefully.
What are the numerical values defined by STP?
what happens when the temperature of a solid reaches its melting point
Answer:
it melts
Explanation:
5. The formula unit of calcium sulfide is :
(1 Point)
OCa, S,
o Ca₂S
O Ca23
O Cas
the ion SO-² ia given : find the protons electrons and neurons
Answer:
dude did you not pay attention in science the answer is 18- n 20- p 18-e
Explanation:
Which elements are necessary to accomplish work?
force, cause, displacement
force, cause, energy
force, energy, displacement
energy, cause, displacement
The answer to this question is A "force, cause, displacement"
Hope that helps!
30 points!!
What is the mass of a 10 gram sample of potassium-42 that will remain unchanged after 124 hours?
Explanation:
hope this helps you
Mark my answer as brainalist
A force that pulls all objects that have mass toward one another is called
I think it is newtons but not that sure
Answer:
Gravity
Explanation:
I remembered from quizlet.
What does a reaction energy diagram represents
Answer:
The energy changes that occur during a chemical reaction can be shown in a diagram called a potential energy diagram, or sometimes called a reaction progress curve. A potential energy diagram shows the change in potential energy of a system as reactants are converted into products.
Explanation:
Answer:
The answer is the changes in energy during a reaction. Have a good day.:)
Earth’s magnetic field results from movements in the
a.
mantle.
b.
outer core.
c.
inner core.
d.
crust.
Answer:
do you want to know why
Explanation:
inner core
4.
An FM radio station broadcasts at 106.7 x 106 Hz. What is the corresponding wavelength of the radio wave?
Answer:
λ = 2.8 m
Explanation:
Given data:
Frequency of radio wave = 106.7 ×10⁶ Hz
Wavelength of radio wave = ?
Solution:
Formula:
Speed of wave = frequency × wavelength
speed of wave = 3×10⁸ m/s
by putting values,
3×10⁸ m/s = 106.7 ×10⁶ Hz × λ
Hz = s⁻¹
λ = 3×10⁸ m/s / 106.7 ×10⁶ Hz
λ = 3×10⁸ m/s / 106.7 ×10⁶ s⁻¹
λ = 0.028×10² m
λ = 2.8 m
Answer number 3 plzz
Answer:
energy
Explanation:
it is required energy to remove an electron from an atom
Why do chemists routinely test existing chemicals
Answer:
The chemists such as analytical chemists determine the structure, composition, and nature of substances by examining and identifying their various elements or compounds. These chemists are crucial to the pharmaceutical industry because pharmaceutical companies need to know the identity of compounds that they hope to turn into drugs.
How many formula units is 213 g of PbCl2?
a
1.28 x 1026
b
4.61 x 1023
G
7.86 x 1023
d.
15.72 1024
Answer:
4.61 x 10^23
Explanation: Convert 213g of PbCl2 to mol, which is 0.7658950184462004, multiply 0.765 with 6.022 x 10^23.
1 mole is equal to 6.023 × 10 ²³ molecules. 4.61 x 10^23 formula units is 213 g of PbCl2.
What do you mean by mole ?The term mole is defined as the amount of substance of a system which contains as many elementary entities.
One mole of any substance is equal to 6.023 × 10²³ units of that substance such as atoms, molecules, or ions. The number 6.023 × 10²³ is called as Avogadro's number or Avogadro's constant.
The mole concept can be used to convert between mass and number of particles.
Convert 213g of PbCl2 to mol,
1 mole is equal to the 6.023 × 10 ²³ molecules
1 mole of PbCl2 is equal to the 6.023 × 10 ²³ molecules
which is 0.7658950184462004, multiply 0.765 with 6.022 x 10^23.
= 0.765 × 6.022 x 10^23
= 4.61 x 10^23
Thus, 4.61 x 10^23 formula units is 213 g of PbCl2.
To learn more about the mole, follow the link;
https://brainly.com/question/26416088
#SPJ2
1. What is the independent variable?
2. What is the dependent variable?
Answer:
-The independent variable is a variable often denoted by X, whose variation does not depend on that of another.
-The dependent variable is a variable often denoted by Y, whose value depends on that of another.
3:Both plants and animals get the energy they need to grow by breaking down food
true or false?
3a:why did you selected your response?
False
Plants do not break down their own food. They do not break down glucose. Animals however, need to ingest and break down the food in order to obtain energy.
Answer:
False
Animals get their energy be breaking down food but plants get their energy from sun and make food by the process of photosynthesis.
Lucy knew that a tea cup of water has a boiling point of 100˚ Celsius. She currently has a 5 liter soup pan filled with water. At what temperature will the 2.5 two liters of water boil? A. 500˚ Celsius B. 0˚ Celsius C. 105˚ Celsius D. 100˚ Celsius
Which of the following statements is not a main point of Dalton's atomic theory?
of
Select one:
a. Atoms are indestructible.
b. Atoms are made up of smaller particles.
C. All matter is made up of atoms.
d. All atoms of one element are exactly alike, but they are different from atoms of other elements.
Answer:
B is not main point Dalton addressed
2. Describe how baking cake is an example of irriversible change.
Answer:
Baking a cake is a chemical and irreversible change, because once the raw materials are chemically converted during baking, one cannot recover the raw materials from the cake
please help me on science asap doc
make sides and power point
Answer:There is no doc when i open it, its shows up blank
c2h4o2 empirical formula
When thermal
energy of a system increases, the particles move ____.The motion of the particles can move parts of the system. When something causes an object to ___ it has done work on it.
a. slower;move
b. faster;move
c.faster;heat up
d.slower; heat up
Justine was feeling very sick she went to the doctor who told her she had a bacterial infection and withdrew blood for blood work. Which component in justines blood would be higher than normal
Plasma
White blood cells
Red blood cells
Platelets
Answer:plasma
Explanation:
plasma white blood cells red blood cells platelets.