A mirror works on the principle of
and a lens works on the principle of
Explanation: When the ray of light falls on a highly polished and smooth surface, then after striking it bounce back into the same medium, this phenomenon is called reflection. So, mirror works on the principle of reflection
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Explanation:
Answer: The mirror is a device based on the principle of reflection whereas the lens is based on the principle of refraction
Can someone help me write poems about Photosynthesis and Cellular Respiration?
Answer:
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please help me i’ll give you brainliest if correct
Answer:
B
Explanation:
If done incorrectly and not under said guidelines that is.
Give me one example of a sport that requires someone to have good reaction time?
Answer:
Baseball
Explanation:
Baseball because the ball can come at you at high speeds and you need to react quickly.
Look at the figure below and calculate the length of side x.
A. 12.6
B. 14.5
12
C. 10.3
u
у
O D. 8.5
45
Answer:
8. 484 so 8.5cm is the answer
Explanation:
Trig ratio.. I used cosine here
Cos 45= x /12
X = 12 x cos 45
= 12 x 0.707
= 8.484
=8.5
a. Write 2-3 sentences describing what happens to a uranium nucleus during nuclear
fission. (2 points)
b. Write 2-3 sentences explaining why nuclear fusion cannot be used in power plants, yet
can still be the original source of the electric energy used in homes. (4 points)
c. Write 3 - 4 sentences evaluating the use of nuclear fission to generate electric energy. Provide at least one point in favor of and two points against using fission. (3 points)
Answer:
Through their studies of radioactive elements, they discovered nuclear fission.
The atoms then undergo nuclear fission, producing daughter nuclei and more neutrons.
Critical mass is the minimum mass of fissionable material required to sustain a nuclear fission reaction.
Imagine an energy source that is more powerful than nuclear fission or even nuclear fusion.
The products of uranium mining and nuclear fission remain radioactive for hundreds of thousands of years.
Health officials did not test for Strontium 90, a radioactive carcinogenic byproduct of nuclear fission.
And no one's going to be able to invent all the hydrogen-powered cars and nuclear fission energy we're supposed to have in the future.
The development of nuclear fission weapons and later thermonuclear fusion weapons represented an incomparable revolution in weaponry.
The element can be prepared artificially in particle accelerators and is a byproduct of nuclear fission reactions.
Nuclear fusion reactions are like nuclear fission reactions, therefore, in the respect that some quantity of mass is transformed into energy.
Before World War II, German chemists Otto Hahn and Fritz Strassmann discovered nuclear fission.
Element 109 is named meitnerium, for Lise Meitner, who was the first to realize that uranium undergoes nuclear fission.
The reason is that nuclear fission occurs best with neutrons that move at relatively modest speeds, called thermal neutrons
The simple atom bomb owed its explosive power to the energy released by nuclear fission, or fusion.
An atomic bomb is a weapon of mass destruction which uses nuclear fission to produce vast amounts of energy.
These engines use the heat of nuclear fission to drive steam turbines, which in turn charge the batteries.
Pellets of nuclear fuel are contained within the fuel rods of nuclear fission reactors.
It is likely that nuclear fission, hydroelectricity, wind power and direct solar power will be important sources for future electricity generation.
Their research provided the groundwork for other modern-day solutions that use microwave energy and light to propel ships, rather than nuclear fission.
Why is the public too dumb to understand the Privy Council, too unscientific to understand genetic engineering, but is now an expert on nuclear fission? btw this is for c
Answer:
A.When a large, fissile atomic nucleus such as uranium-235 absorbs a neutron, it may undergo nuclear fission.In the first step, a uranium-235 atom absorbs a neutron, and splits into two new atoms, releasing three new neutrons and a large amount of binding energy.
B. One of the biggest reasons why we haven't been able to harness power from fusion is that its energy requirements are unbelievably, terribly high. In order for fusion to occur, you need a temperature of at least 100,000,000 degrees Celsius. That's slightly more than 6 times the temperature of the Sun's core.
C. You would need less uranium to fuel it and it would generate better electricity, but its energy requirements are too high, and we would not be able to control it
Explanation:
Jimmy walks 3 miles east then 1 mile west. What is the distance Jimmy traveled?
Answer:
2 miles
Explanation:
Jimmy walked forward 3 miles east (to the right)
Then, he backtracked and walked 1 mile west (to the left)
This can be written as:
3 - 1 = ?
3 - 1 = 2
Therefore, Jimmy traveled a total of 2 miles.
Scientists can use rock layers to determine which of the following? Group of answer choices The mass of Earth The size of Earth The age of Earth The amount of land on Earth
Answer:
The age of the earth
Explanation:
The deeper the layer the older the age
You have a nightlight plugged into an outlet in the hallway, which uses 3.5 watts when plugged in. If the house circuit provides 120.0 volts, wh
is the current through this bulb?
A. 420 amps
B.
0.029 amps
C.
34 amps
D.
0.0083 amps
Answer:
I = 0.029 A
Explanation:
It is given that,
Power of hallway is 3.5 watts
The house circuit provides 120 volts
We need to find the current through this bulb. The power of electric bulb is given by :
[tex]P=VI[/tex]
[tex]I=\dfrac{P}{V}\\\\I=\dfrac{3.5}{120}\\\\I=0.029\ A[/tex]
So, the electric current is 0.029 A.
Answer:
I = 0.029 A
Explanation:
PLEASE HELP !!
On Earth we can easily see Mercury, Venus, and Mars in the night sky. The planets look like they are moving through the stars because the
A) Earth is orbiting the Sun.
B) sky is swirling overhead on Earth.
C) all objects in space orbit around the Earth.
D) planets are moving in their own orbit around the Sun.
Which energy conversion correctly describes what happens when you are dancing
cynthia sprints 60 meters in 5 seconds during soccer practice. what is her speed. please show your work
Answer:
12 m/s
Explanation:
Speed can be found using the following formula.
[tex]s = \frac{d}{t}[/tex]
where s is speed, d is distance traveled and t is the time.
We know that Cynthia sprinted 60 meters in 5 seconds. Therefore, the distance is 60 meters and the time is 5 seconds.
d=60
t=5
Substitute these values into the formula.
[tex]s=\frac{60}{5}[/tex]
Divide
[tex]s=12[/tex]
Add appropriate units. For this problem, the appropriate units would be meters per second, or m/s.
[tex]s=12 m/s[/tex]
Cynthia's speed is 12 meters per second.
Which example shows separation of different wavelengths of light due to diffraction?
Answer:
spectrum
Explanation:
The spectrum formed different colors due to refraction of light
Answer:
A A A A A
Explanation:
correct on edge:)
Which describes how chemical changes are different from physical changes?
Select one: a. Chemical changes can be measured, but physical changes cannot. b. Chemical changes involve the formation of a new substance. c. Chemical changes release energy, but physical changes absorb energy. d. Chemical changes cannot be caused by oxygen.
Answer:
B. Chemical changes involve the formation of a new substance.
Explanation:
They can both release energy, both can be measured, and chemical changes can be caused by oxygen, so I believe it would be B.
what is an example of a compressional wave?
Answer:
The wave front expanding out from an explosion is possibly the most dynamic example of a compressional wave. And a pulse of compressed air can transfer a LOT of energy. ... For a literal "compression wave" visualize accelerating a boat across the water, compressing the water it encounters into a "bow wave".
Sound is an illustration of a compressional wave. Mechanical waves like sound waves need a medium to travel through, such air, water, or solids.
A sound wave undergoes compressions and rarefactions as it passes through a medium.
Particles in the medium move parallel to the wave's propagation direction during a compressional wave.
When particles are close to one another, compression regions arise in the case of sound waves, creating high-pressure zones.
Following these compressed zones are rarefactions, when the particles are dispersed and low-pressure areas develop.
Thus, sound is an example of a compressional wave.
For more details regarding compressional wave, visit:
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What are the three basic parts of a circuit?
Answer: energy source, path, and load
Explanation:
Answer:
1) The wires
2) A component e.g. light
3) A power source
Explanation:
A power source is a basic part of a circuit because if the circuit doesn't have a power source, how will the electrons flow around? . A component is a basic part of a circuit because what's the point of having a circuit without something happening for example a light flashing or a motor turning. Finally, the wires are important because they carry the electrical charge for the component to turn on so if there is no wires there is no electrical flow being carried along
If a car is traveling at the speed of light and the car turns on the headlight, what would happen? Would the headlight not turn on at all, would the headlight travel at twice the speed of light, or would the headlight act like a flowing sink flowing out light?
Answer:
flowing sink flowing out light
Explanation:
Determine the ratio of the resistivity of pure water to silver?
3 x 10 11.1
1:3
1:3 x 10 11.1
Answer:
[tex]3 \cdot 10^{11} : 1[/tex]
Explanation:
Silver is a generally excellent conductor, this implies its resistivity is low (from table, we can check the exact worth i.e [tex]\rho_s = 1.6 \cdot 10^{-8} \Omega m[/tex])
Pure water, rather, is an extremely awful conductor, this implies its resistivity is exceptionally high, of order of [tex]k \Omega \cdot m (10^3 \Omega m )[/tex]
Indeed, even without knowing the exact estimation of the pure water resistivity, we can appraise the proportion between the pure water resistivity and the silver resistivity by looking at the two orders of magnitude:
[tex]r= \frac{10^3 \Omega m}{10^{-8} \Omega m} \sim 10^{11}[/tex]
Therefore, we can say that the correct answer is
[tex]3 \cdot 10^{11} : 1[/tex]
What is the difference between a mixture and a pure substance? Give an example of each.
Answer:
A pure substance (an element or a compound) is made up of only one type of atom, or molecule.
Examples: water (H2O molecules), oxygen (O2 molecules), argon (Ar atoms).
A mixture is made of up of more than one type of atom or molecule.
Examples: salt water (H2O molecules, Na+ ions, Cl- ions),
air (N2 molecules, O2 molecules, Ar atoms, CO2 molecules)
Note: the composition of a pure substance is fixed, but the composition of a mixture can vary. Two salt water solutions might not have the same concentration of salt. Or, if you prefer, one blueberry muffin might have more blueberries in it than another blueberry muffin.
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Mirrors produce images by doing which of the following to light?
A. Refraction
B. Diffraction
C. Reflection
D. Interference
E. Scattering
Answer: C
Reflection
Explanation: Light travels in a straight line. Reflection is one of the properties of light. And this is the property in which mirror make use of. The ability of light to bounce back. It's this bouncing back characteristics of light ray that eventually produce the image of an object by the mirror.
If the light ray is absorbed, no image will be produced.
HELP PLZZZZZ Consider the following data:
Current (A)
Resistance (Ω)
0.9
10
0.18
50
0.09
100
Which relationship is shown in this data?
As you increase the current, the resistance increases.
As you increase the resistance, the current decreases.
As you decrease the resistance, the current decreases.
There is no relationship between current and resistance.
Answer:
I think the answer is As you increase the current the resistance increases too.
Temperature is a measure of
Answer:
degree celsius
Explanation:
it's measured in degree Celsius
Are these dimensional analysis answers correct?
Answer:
yes
Explanation:
because once you learn you get to know more answers that's why you should come to brainly.
Tigers and goldfish are not related
2 A sailboat on a lake sails 40. meters north and
then sails 40. meters due east. Compared to its
starting position, the new position of the sailboat
is
(1) 40. m due east (3) 57 m northeast
(2) 40. m due north (4) 80. m northeast
Answer: 3
57m north east
Explanation:
Given that the boat sails 40. meters north and then sails 40. meters due east. The new position will be known by using pythagorean theorem.
P^2 = 40^2 + 40^2
P^2 = 1600 + 1600
P^2 = 3200
P = square root (3200)
P = 56.6 m
P = 57 m (approximately )
Therefore, the new position of the sail boat will be 57 north east
Compared to its starting position, the new position of the sailboat is 57 m northeast
The given parameters;
initial displacement of the sail boat, x₁ = 40 m north
final displacement of the sail boat, x₂ = 40 m east
The new position of the sail boat when compared with the starting position is the total displacement of the sail boat.
A sketch of the sail boat displacement;
↑ → → → → → → 40 m
↑
↑40 m
↑
The hypotenuse of this right triangle is the total displacement of the sail boat.
[tex]R^2 = 40^2 + 40^2 \\\\R^2 = 3200\\\\R= \sqrt{3200} \\\\R = 56.57 \approx 57\ m[/tex]
The direction of the sail boat is northeast
Thus, compared to its starting position, the new position of the sailboat is 57 m northeast
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Match the units in the right hand column with the terms in the right hand column
Answer:
a1
b2
d3
c5
d4
Explanation:
Hope this helps
Check if right by the way
Answer:
a1
b2
d3
c5
d4
Explanation:
Which of these does not have an electric charge?
neutron
proton
electron
atom
Answer:
i think its the first one...you could have searched it up though.
Explanation:
Is a reflection matter?
Answer:
Yes, because everything bounce off in every surface around any object.
Explanation:
Plz ans this fast
Ur ans will be maked as brainliest
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Plz solve this asap.....
Answer:
1) b,
2)a,
3)3seconds
4)10&30
5)0
Explanation:
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Answer:
c is correct option because moon will go away when we come closer to earth and it will cut in round shape...
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Answer:
C.
Explanation:
Because when we closer, it is rounder