Answer:
geothermal energy is the answer
friction always acts____ and in the ____ direction of the motion of an object
Answer:
Friction force always acts tangent to the surface at points of contact. Friction force acts opposite to the direction of motion. There are 2 types of friction: Static friction: If the two surfaces in contact do not move relative to each other, one has static friction.
Please help would it be 10?
Answer:
10N
Explanation:
Once started, why can nuclear fission continue to occur on its own?
a) The thermal energy released can cause the products to join.
b) The neutron formed by the reaction can cause more nuclei to combine.
c) The thermal energy released can cause the products to split.
d) A neutron begins the reaction, and more neutrons are formed in it.
Answer:
C. The thermal energy released can cause the products to split.
Explanation:
Because this is fission its bleeding off the atom.
A neutron begins the reaction and more neutrons are formed in it ( D )
When a nuclear fission is started it will continue to occur on its own because Nuclear fission is a form of reaction that starts with the splitting of the neutron of an atom into smaller nuclei which will continue to split into much smaller nuclei infinitely ( i.e. Chain reaction )
Hence we can say that once a Nuclear fission is started it can continue to occur on its own because A neutron begins the reaction and more neutrons are formed in it ( i.e. chain reaction )
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List 5 occasions in real life when you want friction (motion to stop)
Answer:
*want my husband's mouth to stop moving
*when im driving my car and the light turns red
*i want the person pushing the buggy behind me to stop when I stop
*when I'm on the 16th floor at the Horseshoe Casino Hotel and the elevator keeps passing my floor... would love for it to stop and pick me up
*when Publisher's Clearing House is delivering my big fat check, I definitely want them to stop and hand it over:)
A rock is dropped into a canyon that is 0.3 km deep. Determine the time it takes the rock to hit the bottom of the canyon?
Answer:
rock of mass m is dropped to the ground from a height h. A second rock, with mass 2m, is dropped from the same height. When the second rock strikes the ground, what is its kinetic energy? (a) Twice that of the first rock, (b) four times that of the first rock, (c) same as that of the first rock, (d) half as much as that of the first rock, (e) impossible to determine.
If a rock is dropped into a canyon that is 0.3 km deep, then the time taken by the rock to hit the bottom of the canyon would be 7.82 seconds.
What are the three equations of motion?There are three equations of motion given by Newton
v = u + at
S = ut + 1/2 × a × t²
v² - u² = 2 × a × s
Keep in mind that these calculations only apply to uniform acceleration.
As given in the problem, if a rock is dropped into a canyon that is 0.3 km deep.
By using the second equation of motion given by Newton,
S = ut + 1/2at²
300 = 0 + 0.5 × 9.8 × t²
t² = 300 / 4.9
t = 7.82 seconds
Thus, the time taken by the rock to hit the bottom of the canyon would be 7.82 seconds.
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A car travels 300km in six hour. What is the average speed
Answer:
50 km/hrExplanation:
The average speed of the car can be found by using the formula
[tex]s = \frac{d}{t} \\ [/tex]
d is the distance
t is the time taken
From the question we have
[tex]s = \frac{300}{6} = 50 \\ [/tex]
We have the final answer as
50 km/hrHope this helps you
Answer:
50mph
Explanation:
Just do[tex]\frac{300}{6}[/tex] (aka 300 divided by 6)
And you'll get 50 as your answer!
Hope this helps! Ty!
pins accompained by a ball bowling dates back to what era
You are one of the forensic anthropologist working on the Romanov Family investigation. You and your team are trying to determine the height of each of victim. Which bone will you analyze to create a profile of the victims?
Answer:
Femur
Explanation:
The bone to forensically analyze in order to create a height profile of the victims would the femur.
The approximate height of a human can best be estimated by measuring the length of the bone that runs from the hip to the knee, otherwise known as the femur.
For the males, the length of the femur in centimeters is multiplied by 2.32 followed by the addition of 65.53 in order to arrive at the approximate height of the individual. For the females, on the other hand, the length of the femur in centimeters is multiplied by 2.47 followed by the addition of 54.1.
I need to match the term with the definition
Please don't put a random answer
Answer:
A, B, C, D
Explanation:
Yes, i know it is abcd, but it is correct
Answer:
average speed - b
speed - d
acceleration- c
Instantaneous speed- a
Explanation:
I think I dont really remember
Is it healthy to be sad all the time?
1.sometimes
2. no
3.yes
Answer:
my answer would be NO. it is not healthy
Answer:
2. No.
Explanation:
Absolutely not, think of one time being sad has ever helped you in a situation. The only thing sadness has ever done is make you not want to go anywhere, constantly eat, and stay in your bed.
If you're sad all the time, that could mean depression, and bottling up your depression could eventually lead to some form of hurting yourself, or someone you love, it may even lead to your death.
Whatever's making you sad, you need to address the situation and not bottle it up. Squash it once and for all so you can experience joy again, do not let a situation you're able to control make you want to lose your life.
Please help. I'll give brainliest :)
What happened to the supercontinents Columbia and Rodina?
They broke up and formed into the current land masses and
ocean floors.
The action of continental drift broke up Columbia an Rodina
into smaller continents.
The action of plate tectonics broke up Columbia and Rodina into
smaller continents.
They were formed before the process of plate tectonics began.
Explanation:
The choices aren't exactly correct. Technically, Rodinia pulled apart from tectonics, but then it slammed back together on the other side of the planet to form Pangea.
I guess C would be the closest correct answer.
Answer:
Is The First One-They broke up and formed into the current land masses and
ocean floors.
Explanation:
I Took The Quiz:)
PLSSSSSSSS SOMEONE HELP ME WITH THIS ONE!!
Answer:
D
Explanation:
At the other end of the spectrum toward red, the wavelengths are longer and have lower energy.
If an arrow with the mass of 30 grams, sits in a bow with the potential energy of 70 J, what would the velocity of the arrow be after it left the bow. Assume no energy loss.
2.2 m/s
68 m/s
4.7 m/s
4700 m/s
Answer:
68m/s
Explanation:
Given parameters:
Mass = 30g = 0.03kg
Potential energy = 70J
Unknown:
Velocity = ?
Solution;
Since there is no loss in energy, the potential energy and kinetic energy will be the same when shot;
P.E = K.E
K.E = P.E = [tex]\frac{1}{2}[/tex] m v²
70 = [tex]\frac{1}{2}[/tex] x 0.03 x v²
70 = 0.015v²
v = 68m/s
If you have 100 kg of each of these substances, which would require the most energy to increase its temperature by 25 Kelvin?
A. iron
B. carbon
C. rubber
D. air
Answer:
a
Explanation:
Answer:
A Iron
Explanation:
Hope this helps :D
plz do it all i will give brainlest and thanks to best answer do it right plz
The answer is D
Explanation:
soundwaves can travel through water aka a liquid but secondary waves cant
Hardin electronic corporation is designing a new cell phone, they need a solid material that will insulate the phone and product their users from electric shock. Which material would best fit the needs of Hardin engineers A. A non-metal B. A metalloid C. A metal D. A semiconductor
Answer:
A
Explanation:
The material that would best suit Hardin electronic corporation's need would be a non-metal.
Non-metals are naturally occurring substances or materials that lack the properties of metals. In other words, non-metals are poor conductors of heat and electricity, unlike metals.
Solid non-metals are, therefore, used as insulators in the design of materials. Hence, the best material for Hardin electronic corporation to use that will insulate the phone and protect their users from electric shock would be a non-metal.
The correct option is A.
Which of these changes would likely occur if the rate of Earth's rotation on its axis decreased? The length of day would be shorter F The length of day would be longer G The length of the seasons would be shorter. H The length of the season would be longer.J
Answer:
F. The length of day would be longer
Explanation:
Earths rotates on its axis from the eastward to the westward direction, earth takes about 24 hours to complete its rotation. If the rate of earth's rotation on its axis slows down then the days will be longer than usual. Thought the length of year would remain the same. Earth rotation is also impacted by the sun and moon's gravitational pull. The disappearance of the centrifugal force form the surface would cause climate changes and seasonal extremes.In baseball/softball how many players play in the field at one time?
Answer:
10 players
Explanation:
A pendulum swings back and forth. Is there energy in the system?
Answer:
yes
Explanation:
A pendulum should be able to contain enough energy to constantly be moving
All power plants use fuel to supply energy that turns into:
Answer: Electrical energy
Explanation:
A power plant is considering an industrial facility that has the ability to generate electricity from its primary energy.
There could be used one or more generator when it comes to power plants and their function is to convert mechanical energy into electrical energy in order to supply power to the electrical grid for other people that are needing electricity and more.
One planet is 3.00 x 1012 kg and another is 2.00 x 1010 kg and they are separated by a distance of 10 x 1015 m. Calculate the gravitational force between the two planets.
Answer:
The gravitational force between the two planets is [tex]4\cdot 10^{-20} \ N[/tex]
Explanation:
Newton’s Law of Universal Gravitation
Objects attract each other with a force that is proportional to their masses and inversely proportional to the square of the distance between them.
[tex]\displaystyle F=G{\frac {m_{1}m_{2}}{r^{2}}}[/tex]
Where:
m1 = mass of object 1
m2 = mass of object 2
r = distance between the objects' center of masses
G = gravitational constant: [tex]6.67\cdot 10^{-11}~Nw*m^2/Kg^2[/tex]
The mass of the planets are:
[tex]m1 = 3\cdot 10^{12}\ Kg[/tex]
[tex]m2 = 2\cdot 10^{10}\ Kg[/tex]
And the distance is:
[tex]r = 10\cdot 10^{15}\ m[/tex]
Applying the formula:
[tex]\displaystyle F=6.67\cdot 10^{-11}{\frac {3\cdot 10^{12}*2\cdot 10^{10}}{(10\cdot 10^{15})^{2}}}[/tex]
Calculating:
[tex]\displaystyle F=6.67\cdot 10^{-11}{\frac {6\cdot 10^{22}}{1\cdot 10^{32}}[/tex]
[tex]F = 4\cdot 10^{-20} \ N[/tex]
The gravitational force between the two planets is [tex]4\cdot 10^{-20} \ N[/tex]
help it's for my civics class
ANSWER: D. Rule of Law
is the answer
d. rule of law
rule of law .
what is the acceleration of a 50kg object with 100 newtons force applied to it
2. An 873 kg dragster accelerates at a rate of 44.6 m/s during a race.
a. What is the magnitude of the net force exerted on the dragster during this time?
Known (Given):
=
Unknown:
Fnet =
Equation:
Fret=ma (or m*a)
Solution:
Answer:
38,673.9NExplanation:
According to newton's second law:
Force = mass * acceleration
Given
Mass = 873kg
acceleration = 44.66m/s²
Magnitude of the force is expressed as;
F = ma
F = 873 * 44.6
F = 38,673.9N
Hence the magnitude of the net force exerted on the dragster during this time is 38,673.9N
Jessica did an investigation about the states of matter. As part of the investigation, Jessica wanted to change a liquid into a solid. What must she do to bring about this change in state?
place the liquid in a different container
A
B
stir the liquid as quickly and thoroughly as possible
C
remove energy from the liquid so that its particles slow down
D
increase the energy of the liquid so that its particles move faster
Answer:
D : Increase the energy of the liquid so that its particles move faster
Explanation:
Sorry the other guy was wrong can i have brailiest please.
Which element accumulates in the environment due to the use of
fertilizers?
A. oxygen
B. hydrogen
C. nitrogen
D. carbon
To Find :
Which element accumulates in the environment due to the use of fertilizers.
Solution :
Most of the fertilizers used in daily practice are nitrogen fertilizers .
When soil became waterlogged, soil organisms take the oxygen they need from nitrates, leaving the nitrogen in a gaseous form which escapes into the air.
Also, nitrogen is very stable and did not participate in most of the reactions.
So, nitrogen is accumulates in the environment .
Therefore, option C. is correct.
The earth’s gravity is pulling on you. Are you pulling on the earth? Explain your reasoning.
Answer:
yes we do because every object that has mass produces gravitational force relative to how much mass it has
Explanation:
Which of the following represents a covalent compound?
a. BeF2
b. KF
C. PCIE
d. Ti
HELP ASAP!!
Even though the outer shell of Ca can hold up to 32 electrons it will be stable with?
a. 2
b. 4
C. 8
d. 16
In what way is Model B better than Model A?
O Model B shows the types of elements in the
compound, but Model A does not
O Model B shows the three-dimensional shape of the
molecule, but Model A does not.
O Model B shows how the atoms in the molecule are
connected, but Model A does not
O Model B shows the number of atoms of each
element in the molecule, but Model A does not
The way in which model B is better than model A is as follows: Model B shows how the atoms in the molecule are connected, but Model A does not (option C).
What is structural formula?A structural formula is any of the various diagrammatic representations of the structure of a molecule that shows how its atoms are linked to each other, with what type of bonds, and the presence of any charges.
On the other hand, a chemical formula is a notation indicating the number of atoms of each element present in a compound.
According to this question, two models of the same compound are given. Model A is the chemical formula of the compound while model B is the structural formula.
Therefore, it can be said that model B betters model A being that it shows how each atom of the compound are linked to one another.
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Answer:
C
Explanation:
