Answer:
300 kilometers
Explanation:
75 km x 4 = 300 km
Which of the following is a balanced equation? *
A Na +F-> NaF
B H2+02 -> H2O
C Ca + Br --> CaBr2
D Na + C12 --> NaCl
Answer:
maybe A is balanced
Explanation:
Na+F----->Naf
How is the difference between consecutive resonance points related to the wavelength of the wave?
Answer:
The difference between two consecutive resonance points is always ½ a wavelength apart.
Explanation:
In both open and closed pipe resonators, the resonance points are always 1/2λ apart. (The distance to the next antinode)
Blank is a good way to for me to see where I am going while
dribbling
Answer:
???
Explanation:
When a roller coaster speeds up going down I hill, what type of energy it that?
Answer:
The potential energy of the roller coaster increases as the coaster goes up a hill and can be converted to kinetic energy.
1. What does the curved blue line inside the SARS-CoV-2 virus represent? What is the purpose of this structure?
Answer:
its dna
Explanation:
to attack host and to harm
A boy is looking into a plane mirror .His nose is 30 cm in front of the mirror .How far is his nose from where its image appears to be ?
Answer:
60cm
Explanation:
30+30=60
how do we work out the world time zone differences
An arrow is shot into a falling apple. What type of collision is this an example of?
a Static
b Inelastic
c Elastic
d Kinetic
Answer:
The answer is B. Inelastic.
Answer:
The answer to this question is B. Inelastic.
Have great day! :3
Explanation:
The magnitude of a black hole's tidal force is proportional to and inversely proportional to
Answer:
the square distance i think doubble check me with others from brainly if i am wrong then i am so sorry.
If the rocket launches with a force of 10N, what is the force on the launch pad?
Answer:
10N
Explanation:
Action and Reaction forces state that the force will be equal
A student measures the time it takes for two reactions to be completed reaction eight is completed and 57 seconds and reaction be is completed and 48 seconds what can about the rights of these reactions
Answer: The rate of reaction B is higher
Explanation:
Just done the test, got it right.
The reaction b has the higher rate than a.
What is meant by rate of a reaction ?The pace at which the products are created from the reactants in a chemical reaction is referred to as the rate of reaction.
Here,
An indication of how quickly a reaction can be completed can be found in the reaction rate.
We can devise strategies to increase production by learning how quickly things are made and what slows down reactions.
As reactant concentrations fall over time, reaction rates often decrease as well. The reciprocal of the time required determines the rate of a reaction, or stage in a reaction.
R ∝ 1/t
Since, the rate of reaction is inversely proportional to the time, we can say that, the reaction b which was completed in lesser time compared to a, has the higher rate.
Hence,
The reaction b has the higher rate than a.
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Which force is sometimes attractive and has an infinite range?
A.strong nuclear
B.weak nuclear
C.gravitational
D.electromagnetic
Answer:
C. gravitational
Explanation:
Answer:
c
Explanation:
edge
Which of the following is a purpose of rules in sports and games? (5 points)
Answer:
To keep everyone safe
Explanation:
Without rules people could get hurt
The resistance of a 24 W, 12 V filament lamp depends on the current flowing through the lamp. For currents up to 0.8 A, the resistance has a constant value of 2.5 Ω.
Calculate the potential difference across the lamp when a current of 0.8 A flows through the lamp.
Answer:
V=IR
V=0.8×2.5
V=2V
where V=potential difference
I=Current
R=Resistance
.........
HELP PLEASE!!!!!!!!!Which statement is true of a heterogeneous mixture but not of a
homogeneous mixture?
A. It is made of different substances mixed together.
B. Its components are unevenly distributed.
c. Its components are evenly distributed
D. It is made of a single type of compound.
Answer:
it is b. components are unevenly distributed
Explanation:
in homogeneous mixture components are evenly distributed but in heterogeneous mixture they are not evenly distributed
Why can scientists ignore the gravitational force when
studying the physies of an atom?
Answer:
When studying atoms, scientists can ignore the Gravitational force between charged particles that make up the atoms because it is many millions of times smaller than other forces in the atom. Explanation: Scientists can ignore the gravitational force because the gravitational force is considered to be negligible as compared to the other forces due to its smaller value.
A car has a weight of 10 000 N. A man takes 10 seconds to push the car 5 m using a force of 1000 N. calculate the work done
Radio waves travel at the speed of light. How long would it take the Russians
to send a message to a spacecraft orbiting Mars at a distance of 7.8 x 10^10 m
from Earth?
Answer: you can call you when you can get me a call and I have to go back your mom I don’t have a lot to say about that because you don’t want me a little more because you have a lot to me because I have to do it I have a lot to say about it I have a good day and you don’t have a good day and you have a lot of fun with your family I don’t want you have a good night I love your day you ty me you don’t want me a good night to me a little about me you don’t have a good day I love your day I don’t
Explanation: the app crashes every time I have a good night and a good night out and it is good yuyu Hi hi mom I have to go back and pick you a little little more you have to go back
What type of friction is it when two students are pushing a box that is at rest
A wave is traveling at the speed of light. If it has a frequency of 4 x 10^15 Hz, what is its wavelength?
Answer:
7.5x10-^8m
Explanation:
the formulae is v=fh ,where f is frequency
h is wavelength
hence wavelength=v/f
since the speed of light is 3x10^8
then the wavelength =3 x 10^8/4 x 10^15
=7.5x10^-8m
how are polar and nonpolar molecules similar and different?
Answer:
Polar molecules occur when there is an electronegativity difference between the bonded atoms. Nonpolar molecules occur when electrons are shared equal between atoms of a diatomic molecule or when polar bonds in a larger molecule cancel each other out.
Explanation:
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3. Which of these does not have potential energy?
a. A book resting on the floor
b. A roller coaster at its maximum height
c. A bird flying in the sky
d. A basketball shot in the air
Answer:
a. A book resting on the floor
Explanation:
Potential energy is the energy stored in a object due to its position relative to some zero position. An object possesses gravitational potential energy if it is positioned at a height above/below the zero height.
A child pulls on wagon with force of 20 N if the wagon models a total of 10 M in four seconds what is the average power generated by the child in watts
Answer:
[tex]power = \frac{(force \times distance)}{(time)} \\ power = \frac{(20 \times 10)}{4} \\ power = \frac{200}{4} \\ power = 50 \: watts[/tex]
What happens when you cut a magnet
in half?
Yub87654d HELP there is this person trying to kid,.,nap,./, kids so if you see an account called Hernyana report there questions and there account
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Answer:
what???
Explanation:
Kennedy and Lilly are in science class. They are asked to prove that some forces are non-contact
forces. The girls list five examples of objects exerting a force on each other without touching. Do you
agree with their list? Tell why or why not?
1. Two like magnetic poles repel each other.
2. Putting on a wool sweater can make your hair get static electricity when it rubs against the
sweater.
3. When you bring two negatively charged balloons near each other they push each other away.
4. Magnets stick to a refrigerator.
Number 1 and 3 demonstrate non-contact forces because the magnets or electrically charged objects exert
forces on each other without touching.
3 is the only example of non-contact forces since like charges repel each other.
Number 1 and 4 are non-contact forces since they both use magnets.
All four are good examples of non-contact forces since they all use either magnets or electric charge which are
non-contact forces.
Answer:1,3 and 5
Explanation:
A balloon of hydrogen is put into to pressure chamber. The initial pressure and volume of hydrogen is 1 atm and .5 cm3. The pressure of the chamber is increased to 2 atm. What is the new volume?
Answer:
0.25 cm³.
Explanation:
We shall apply Boyle's law to find the solution . According to it
PV = constant where P is pressure and V is volume of the gas.
P₁ V₁ = P₂V₂
1 x .5 = 2 x V₂
V₂ = 0.25 cm³.
A.She says that as increase in pressure increases the volume of helium gas.
B.She says that a decrease in pressure decreases the volume of helium gas.
C. She says that a decrease in temperature increases the volume of helium gas.
D. She says that an increase in temperature increases the volume of helium gas.
Answer:
c
Explanation:
she say that a decrease in temperature increases the volume of helium gas
Answer: c
Explanation:
WHAT IS THE DENSTY OF ALL THE LAYER IN THE ATMOSPHERE
Answer:
The troposphere starts at the Earth's surface and extends 8 to 14.5 kilometers high (5 to 9 miles). This part of the atmosphere is the most dense. Almost all weather is in this region.
Explanation:
The troposphere contains roughly 80% of the mass of Earth's atmosphere. The troposphere is denser than all its overlying atmospheric layers because a larger atmospheric weight sits on top of the troposphere and causes it to be most severely compressed.
The troposphere starts at the Earth's surface and extends 8 to 14.5 kilometers high (5 to 9 miles). This part of the atmosphere is the most dense. Almost all weather is in this region.
how does an a.c generator work?