Manmade or Natural gases which are contributing to greenhouse effect by absorbing the heat and warming the planet.
These gases are carbon dioxide, methane, water vapor, and nitrous oxide which occur naturally and unnaturally in nature
some examples are like excess and unnecessary use of petroleum products leads to increase the amount of greenhouse gases in nature.
Deforestation and cutting trees also lead to increase the greenhouse gases in environment.
A ball of 10kg falls from rest from a height of 150m, Neglating air resistance, calculate its kinetic energy after falling a distance of 40m. Take g=10m/s
Answer: [tex]3920\ J[/tex]
Explanation:
Given
mass of ball m=10 kg
It is placed at a height of 150 m
It is dropped from the height and allowed to free fall for 40 m
Velocity acquired by the ball during this fall is given by [tex]v^2-u^2=2as[/tex]
Insert u=0, a=g
[tex]\Rightarrow v^2-0=2\times 9.8\times 40\\\Rightarrow v=\sqrt{784}\\\Rightarrow v=28\ m/s[/tex]
Kinetic energy at this instant
[tex]K.E.=\dfrac{1}{2}\times 10\times 28^2\\\\\Rightarrow K.E.=3920\ J[/tex]
what is the power of a student that has done a work of 10 joules in 10 seconds
Answer:
1 Watt
Explanation:
P=W/t
P=10/10
P=1 Watt
Weathering of rocks can occur in many ways. In the western United States, strong winds can erode huge rock formations by blowing millions of tiny grains of sand at these rocks. Which term accurately describes this type of weathering?
A. Thermal
B. Chemical
C. Physical
D. Meteorological
walk done in units time is called
Answer:
Explanation:
work done per unit time is caleed power.it's SI unit is watt.it depends upon time.
Please hurry Describe why electric currents can be dangerous
Answer:
Cardiac Arrest, burns, and nerve damage.
Explanation:
Basically, the main risk is cardiac arrest, caused by the electric current interfering with the normal operation of the heart muscle. Other possible damages are burns due to the electric energy vaporizing the water inside the cells, and nerve damage caused by excessive current through the nerves.
Pea plant clones are given different amounts of water for a three-week period. The first pea plant receives 400 milliliters a day. The second pea plant receives 200 milliliters a day. The third pea plant receives 100 milliliters a day. The fourth pea plant does not receive any extra water: the plant only receives natural ways of receiving water. The heights of the pea plants are recorded daily.
IV ________________________________
DV_______________________________
Answer:
3
Explanation:
A car initially at rest undergoes uniform acceleration for 6.32 seconds and covers a distance of 120 meters. What is the approximate acceleration of the car?
Answer:
Explanation:
The equation for acceleration is
[tex]a=\frac{v_f-v_0}{t}[/tex]. We have the initial velocity since we are told that the car started from rest. What we don't have is the final velocity. But we can find it because we were told that the car undergoes uniform acceleration, so the equation
d = rt will give us that final velocity.
120 = r(6.32) so the velocity or rate of the car is
r = 19 m/s. Plug that in to find the acceleration of the car:
[tex]a=\frac{19-0}{6.32}[/tex] so
a = 3.0 m/s/s
As thermal energy is added to a sample of water, the kinetic energy of its
molecules increases, but the particles remain close together. Which part of
the heating curve illustrates this process?
Answer:
B
Explanation:
Answer:
B. C
Explanation:
took the test :V
Physicist ____ was found to have completely made up some of the data on which his astounding discoveries were made.
Answer:
Jan Hendrik Schön I believe
_____ Rocks are porous.
A) Sedimentary
B) Metamorphic
C) igneous
Answer:
Sedimentary rocks are porous.
Explanation:
So option A) Sedimentary is your answer. Have a great summer
what is velocity Write its formula
Answer:
Explanation:
plss plss plss help ASAP. thank u
Answer:
13. (A) 20°
14. (D) 65°
15. (A) 0 m/s
Lake is home to a large number of trout. Identify what is most likely to happen if a chemical is dumped into the lake. It is a science question
Answer:
The correct option is C) III. That is, the trout will suffer from disease.
Explanation:
Note: This question is not complete as the options are not included. The complete question with the options is therefore provided before answering the question as follows:
A lake is home to a large number of trout. Identify what is most likely to happen if a chemical is dumped into the lake.
I. The trout will not be affected by the pollution.
II. The number of trout will increase.
III. The trout will suffer from disease.
A) I
B) I and II
C) III
D) II and III
The explanation of the answer is now provided as follows:
Natural selection is the process that took place in the lake. Only those trouts that were fit to survive, or those that have alleles that allow them adapt to new conditions, live and multiply in the presence of an external environmental effect like pollution. In such a circumstance, the fittest organisms would have survived, and the population's allelic frequency would have grown through time. Due to pollution, creatures harboring the other alleles died, causing the total frequency of alleles to alter.
Therefore, the correct option is C) III. That is, the trout will suffer from disease.
m = [1/√1-(v/c) 2 ]mo
An object whose rest mass is 2.0kg is accelerated to 0.9c. What is its relativistic mass?
Relativistic kinetic energy is KErel = (γ − 1)mc2. γ=1+1v22c2 γ = 1 + 1 v 2 2 c 2 . A binomial expansion is a way of expressing an algebraic quantity as a sum of an infinite series of terms.
Hope This Helps YouHELP ME ASAP I WILL MARK YOU THE BRAINLIEST NO LINKS
Answer:
rolling friction is the lady in the forest
static friction is the man pushing the fridge
sliding friction is the snow kid
and fluid fraction is the bird I'm pretty sure
What is the period of a sound wave with a frequency of 20Hz?
28. The mass of a steel building frame is 5500 kg. What power is used to raise it to a helght of 5.0 m If the work is done in 12.0 seconds?
Remember to include your data, equation, and work when solving this problem.
Answer:
2292W
Explanation:
Use the formula for energy first:
[tex]E=D*M[/tex]
Where E = Energy || D = Distance || M = Mass.
Solve that equation:
E = 5 * 5500 ==> 27500J
To find power, divide energy per time:
27500J / 12s =~ 2292W
Did it in a rush, any problems message me
What would make oppositely charged objects attract each other more?
increasing the positive charge of the positively charged object and increasing the negative charge of the
negatively charged object
decreasing the positive charge of the positively charged object and decreasing the negative charge of the
negatively charged object
increasing the distance between the positively charged object and the negatively charged object
maintaining the distance
tance between the positively charged object and the negatively charged object
Hurry I need answers quick I’m timed
Answer:
A). Increasing the positive charge of the positively charged object and increasing the negative charge of the negatively charged object.
Explanation:
The two objects possessing opposite or unlike charges attract one another due to the electromagnetic force between the electrons, as well as, protons in order to develop ionic lattices.
As per the question, the objects having unlike charges would attract one another more when we 'escalate the positive charge of the object having a positive charge and enhance the negative charge of the object possessing negative charge.' This will lead the atoms that are losing electrons to be positively(+ve) charged and the atoms gaining electrons to be negatively
(-ve) charged. Thus, the electromagnetic force among them increases and a stronger ionic network develops leading them to attract each other more. Hence, option A is the correct answer.
Answer:
The person above me is wrong the answer is actually B
Explanation:
I put his/her answer and got it wrong and it showed me theat the answer is b not a
You are given two converging lenses to build a compound microscope. Lens A has focal length 0.50 cm and lens B has focal length of 3.0 cm. Which one of the two lenses would you use for the objective
Answer:
The lens to be used for the objective is lens A
Explanation:
The objective of a compound microscope
The focal length of the lens used for the objective = 1/(magnification obtained)
The focal length of most modern is equal to the tube length
The range of sizes for the focal length of a microscope is between 2 mm and 40 mm
Therefore, the appropriate lens to be used for the objective of the compound is lens A that has a focal length of 0.50 cm = 5 mm
How much energy is transferred in 10 seconds with a current of 13 amperes and a potential difference of 230 volts?
29900 J
Explanation:
Recall that
P = VI
= (230 volts)(13 A)
= 2990 watts
Also,
E = Pt
= (2990 watts)(10 s)
= 29900 J
Two identical spheres a and b carry charges of +0.6 coulomb and -0.2 coulomb, respectively. If these spheres touch, the resulting charge on the first sphere will be...
A) + 0.8 C
B) + 0.2 C
C) - 0.3 C
D) + 0.4 C
what is force? and give its formula
Force is a push or pull that changes or attempts to change the shape or size of an object's position.
Formula Of ForceF = m × a
Here
F= Force
m= mass of object
a= Acceleration
Hope This Helps You ❤️A group of students designed the string drip system to water plants without irrigation, as shown in the image. They placed a jug
next to a plant with the jug's mouth above the plant's pot. Then, they placed one end of a piece of cotton string at the bottom of
the jug and inserted the other end into the soil, about 8 cm deep, close to the plant's root. They kept the string out of direct
sunlight. Finally, they added water to the jug. After a few days, the students decided that their drip was too slow.
ago
How might the students modify their design to increase the controlled drip?
O A.
use a wider jug
B. use a longer string
O c. add more water to the jug
O D. add more strings to the design
Answer:
D add more string and water
A portion size is always equivalent to the serving size listed on the label. A. True B. False
Answer:
Hi, there your answer is False
Explanation:
In a recent year, wind machines in a country generated 183.1 billion kWh of electricity, enough to serve over 17 million households. The nation's total electricity production that year was 4,098 billion kWh. What percent of the total energy production was generated by wind machines
Answer:
The right answer is "4.4%".
Explanation:
Given:
Generated electricity,
= 183.1 billion kWh
Total electricity production,
= 4098 billion kWh
Now,
The wind energy percentage will be:
= [tex]\frac{183.1}{4098}\times 100[/tex]
= [tex]0.0446\times 100[/tex]
= [tex]4.4[/tex] %
When storm clouds produce lighting and thunder, what kind of energy is produced?
Answer:
Static Electricity
Explanation:
I think this is what your asking
Which is a valid ionic compound?
sodide chlorine
sodium chlorine
sodium chloride
sodide chloride
Answer:
sodium chloride
Explanation:
Sodium chloride is an ionic compound. The ions of the sodium chloride compound is sodium ion and chloride ion. The sodium ion is cation while the chloride ion is an anion. Sodium chloride is a very stable compound because of the mutual attraction of oppositely charged ions.
What would happen to the distance between the bright fringes produced by a diffraction grating if the entire interference apparatus (light source, grating, and screen) were immersed in water
Answer:
Since the wavelength would be reduced by the factor of N where N is the index of refraction, fringes would be be closer to one another.
(Similar to the difference of fringes of red light and blue light.)
A table is moved using 60 N of force.
How far is the table moved if 900 J of work is done on the table?
960 m
840 m
15 m
0.06 m
Answer:
15m
Explanation:
W=f×s
[tex]s = \frac{w}{f} \\ s = \frac{900j}{60n} \\ s = 15m [/tex]
Given:
Force,
F = 60 NWork done,
W = 900 JWe know,
→ [tex]W = F\times s[/tex]
or,
→ [tex]s = \frac{W}{F}[/tex]
By putting the values, we get
[tex]= \frac{900}{60}[/tex]
[tex]= 15 \ m[/tex]
Thus the above response i.e., "Option c" is right.
Learn more about work done here:
https://brainly.com/question/8625856
When red light and green light are mixed, the color created is
Answer:
blue lighp
Explanation: