Answer:
Nuclear energy is the energy stored in atoms that can produce electricity.
Hope that helps. x
give two positive and negative arguments involving the usage of nuclear energy
Two Positive and Negative points involving the usage of nuclear energy are:
Positive Points:
1) Large Source of Clean Power.
2) It creates jobs in various nuclear sectors.
Negative Points:
1) Fuel Usage, Large Area under Construction, and Waste Disposal.
2) Operating Nuclear industries is Costly.
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A massless spring with force constant
580 N/m is fastened at its left end to a vertical
wall, as shown below.
The acceleration of gravity is 9.8 m/s
2
.
7 kg 5 kg
580 N/m
Initially, the 7 kg block and 5 kg block rest
on a horizontal surface with the 7 kg block in
contact with the spring (but not compressing
it) and with the 5 kg block in contact with the
7 kg block. The 7 kg block is then moved to
the left, compressing the spring a distance of
0.2 m, and held in place while the 5 kg block
remains at rest as shown below.
7 kg 5 kg
k 0.2 m
Determine the elastic energy U stored in
the compressed spring.
Answer in units of J.
The elastic potential energy stored in the compressed spring is determined as 11.6 J.
What is the elastic potential energy of the spring?
The elastic potential energy of the spring is the energy stored in the spring and the magnitude is calculated as follows;
U = ( ¹/₂kx² )
where;
k is the spring constantx is the extension of the springThe given parameters include the following;
the spring constant, k = 580 N/m
the extension of the spring, x = 0.2 m
Substitute the given parameters and solve for the elastic potential energy stored in the spring based on the compression produced by the two blocks.
U = ( ¹/₂kx² )
U = ( ¹/₂ ( 580 N/m ) ( 0.2 m )² )
U = 11.6 J
Thus, the elastic potential energy stored in the compressed spring is a function of the spring constant and extension of the spring.
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A lemming running 2.87 m/s runs off a horizontal cliff. It lands in the water 5.32 m from the base of the cliff. What is the lemming's change in height when it reaches the water?
(Unit = m)
16.77m is the lemming's change in height when it reaches the water.
An example of a projectileA thing is said to be in projectile motion when it has been fired into the air. After the initial force that launches the object, it only experiences the force of gravity. It is what it is—a projectile—and the path it took to get there is what it was.
You can tell from the situation that this projectile is a Type 1 projectile, or a horizontal projectile. Before you can resolve this issue, you will need a few things.
You must first examine the information you were given:
Vix = 2.87 m/s
dx = 5.32m
Your height or vertical distance are what you need. The following is the usual formula for projectile displacement:
d = Vit +1/2gt²
Specifically, you only need to enter the y-components to obtain the vertical distance. Now keep in mind that a horizontal projectile initially moves only forward and not vertically. Your vi = om/s, leaving you with the following equation:
dy = Viyt + 1/2 gt²
dy = (0m/s)t + 1/2 gt²
dy = 1/2 gt²
However, if you examine your issue, you will discover that no time has been allotted. You can resolve it using the information provided by deriving it from the x component formula:
dx = Vixt
Plug in your knowledge and find a solution for your ignorance.
dx = Vixt
5.32m = (2.87m/s)t
5.32/2.87= t
t = 1.85s
You can solve for your vertical distance/displacement now that you know the time:
dy = 1/2 gt²
dy = 1/2 (9.8 × 1.85²)
dy = 16.77m.
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Answer:
the answer is -16.8
Explanation:
it’s negative because your going down and you have to round off to match the significant digits.
Which best explains why a firework being ignited is an example of an exothermic reaction and not an endothermic reaction?
Answer:
The fireworks give off heat.
Explanation:
How can a small boy balance a big boy
on asea- saw ? Show with a diagram
Answ
— How can a small boy balance a big boy on a sea-saw? Show with a diagram. fast please...... Get the answers you need, now!
2 answers
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Explanation:
One drops a penny from top of the Empire State Building on the ground below. The hight of the Empire State Building is 443m How long will it take for a penny yo strike the ground assuming no air resistance
Answer:
See below
Explanation:
Assuming no resistance
DISTANCE = 1/2 a t^2
443 = 1/2 (9.81)t^2 Shows t = 9.5 seconds
What is a software program that contains DNA profiles of convicted offenders, missing persons, crime scene evidence, and other sources?
Group of answer choices
AFIS
ABLE
CODIS
GGNST
Answer:
CODIS should be the answer
In many locations, old abandoned stone quarries have become filled with water once excavating has been completed. While standing on a 10.0 m high quarry wall, Clarence tosses a piece of granite into the water below. If Clarence throws the rock horizontally with a velocity of 3.0 m/s how far out from the edge of the cliff will it hit the water?
Answer:
Explanation:
Let us calculate the time of flight first using the formula;
Velocity = Displacement/Time
Time = Displacement/speed
Time = 10.0/3
Time = 3.33secs
Next is to calculate how far out from the edge of the cliff it will hit the water. To get that, we will use the equation of motion;
S= ut+1/2gt²
u is the initial velocity = 0m/s
g is the acceleration due to gravity = 9.81m/s
S = 0 + 1/2(9.81)(3.33)²
S = 4.905*3.33*3.33
S = 54.39m
Hence it will hit the water at 54.39m from the edge of the cliff
Answer:
It will hit the water at \(4.28m\) off the cliffExplanation:
Applying kinematic relations along vertical direction
\(y = V_0t + \frac{1}{2}a_yt^2\)
where,
\(a_y = g\)
therefore,
\(y = 0 + \frac{1}{2}gt^2\)
The time taken
\(t = \sqrt{\frac{2y}{g}}\\\\t = \sqrt{\frac{2*10}{9.8}}\\\\t = 1.428s\)
The horizontal distance
\(x = V_yt\\\\x = 3*1.428\\\\x = 4.28m\\\\\)
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If an engine does 400 J of work in 5 s, how much power was generated?
A.8W
B.8000W
C.800W
D.80w
Answer:
the answer is c
Explanation:
If the motion of the particles in the room slow down, the temperature in the room would
Answer:
Go down
Explanation:
A circuit carries a current of 0.64 A when there is a resistance of 50.0 Ω. The voltage applied to the circuit, to the nearest whole number, is ___ V.
Answer:
32v
Explanation:
edge 2023
Question 2 of 10 Which process is the source of all the thermal energy produced by a nuclear reactor? O A. Radioactive decay B. Chemical decay O C. Nuclear fission O D. Nuclear fusion SUBMIT
Answer:
C
Explanation:
A P E X
The process that is the source of all the thermal energy produced by a nuclear reactor is nuclear fission. The correct option is C.
What is nuclear fission?The process by which an atom's nucleus divides into two daughter nuclei in nuclear physics. Fission, the splitting of uranium atoms, is the source of nuclear energy.
This produces heat that creates steam, which a turbine generator uses to produce power. A type of energy emitted by an atom's nucleus, which is composed of protons and neutrons, is known as nuclear energy.
Fission, which occurs when atom nuclei split into several pieces, and fusion, which occurs when nuclei combine, are the two methods by which this type of energy can be created.
Therefore, the correct option is C. Nuclear fission.
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The distance between two successive crest is 5 m at
a frequency of 12 Hz.
(i) what is the wave velocity?
(Il)If there is a crest at × = 3m at time t, find three other positions of the crest at that instant. (iii) What time later will there be another crest at x =
3т?
(iv) If the amplitude of the wave is 1.5 m, write the equation of the wave.
A periodic or cyclic motion's wave velocity is the distance it travels in a unit of time (in any direction).(I) the wave velocity 60 m/s.(ii) The three other position of the crest are 8m, 13m, 18m (iii) time period= 0.083 sec (iv) equation of the wave y(x, t)= 1.3 sin (kx-ωt+Ф)
what is wave velocity?
In other terms, wave velocity is the distance travelled by waves in a unit of time. The definition of wave velocity is stated as the velocity associated with the disturbance propagating in the specified medium.It is also known as phase velocity.Depends upon nature of the medium.(I) according to the wave velocity equation
v= wavelength* frequency= 5*12=60 m/s
(II) x=3m,
three other position of crest x1= x+λ= 3+5= 8m
x2= x+2λ= 3+10=13m , x3=x+3λ= 3+15=18m
(iii) time period= 1/ frequency=0.083 sec
(iv) amplitude given= 1.5 m
equation of wave y(x, t)= A sin (kx-ωt+Ф)
k= wave number
ω=angular frequency
A= amplitude of wave
x= horizontal position variable
t=time period
Ф=Phase
equation of the wave
y(x, t)= 1.3 sin (kx-ωt+Ф)
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why energy crisis may create big problem in the near future.
Answer:
Most energy crises have been caused by localized shortages, wars and market manipulation. Some have argued that government actions like tax hikes, nationalisation of energy companies, and regulation of the energy sector, shift supply and demand of energy away from its economic equilibrium.
A mass of 15 X 10^5 kg is held at a position 9 m away from a mass of 20 X 10^6 kg. What is the gravitational attraction between the two masses?
Answer:
The gravitational attraction between the two masses is 24.7 N.
Explanation:
We have,
Mass of object 1, \(m_1=15\times 10^5\ kg\)
Mass of object 2, \(m_2=20\times 10^6\ kg\)
Distance between masses is 9 m
We know that there exists a gravitational force between masses when they are placed at certain distance. The gravitational force between masses is given by :
\(F=G\dfrac{m_1m_2}{r^2}\\\\F=6.67\times 10^{-11}\times \dfrac{15\times 10^5\times 20\times 10^6}{(9)^2}\\\\F=24.7\ N\)
So, the gravitational attraction between the two masses is 24.7 N.
De Broglie proposed that particles had an associated wavelength.
(a) Explain how de Broglie's hypothesis supported Bohr's atomic model.
(b) Outline an experiment that supports de Broglie's matter-wave hypothesis.
de Broglie proposed that particles had an associated wavelength.
a) de Broglie's hypothesis supported Bohr's atomic model. when J J Thomson discovered the electron, he put forward the idea of the wave nature, he used Davisson–Germer experiment to prove that the electron has spin. again by scattering of electrons by the crystals made that there is a dual nature.
(b) In 1927, Bell Labs scientists Clinton Davisson and Lester Germer conducted an experiment in which they shot electrons at a crystalline nickel target. The resultant diffraction pattern matched the de Broglie wavelength predictions.
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Compared to a human, what is similar about how blue whales organism gets molecules from food and air?
Answer:
whrn a human breath it absorb15 % of oxygen whereas when a bluewhale breathes it can absorb 90% and breath out 10 %
There are some similarity between some natures of blue whales and humans. Both are respring from air. Similarly the immunity systems and chewing mood of food in both have slight similarities.
What are blue whales?Blue whales are fish like organisms living in deep oceans or seas. They are the known largest animal in the world. Blue whales are mammals and not like other small aquatic organisms.
The immunity system in blue whales are similar to those of humans. And moreover some studies shows that their tRNA genes functions similar to those in human.
Blue whales breathe from air and not from the water. Similarly they chew food sometimes similar to humans. Some studies have reported that the evolution of humans and blue whales had exhibited some common factors with respect to the survival and immunity.
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20 points please help!!
Write a hypothesis about the effect of temperature and surface area on the rate of chemical reactions using this format: “If . . . then . . . because. . . .” Be sure to answer the lesson question, “How do the factors of temperature and surface area affect the rate of chemical reactions?”
Answer:
Sample Response: If temperature and surface area increase, then the time it takes for sodium bicarbonate to completely dissolve will decrease, because increasing both factors increases the rate of a chemical reaction.
Explanation:
b) A stone is projected horizontally with velocity 10 m/s from height 100 m in a vacuum and moves along a path as shown. X is the point on this path after 2 seconds. Calculate the magnitude and direction of velocity at this point.
At the point X after 2 seconds, the stone has a magnitude of velocity equal to 10 m/s, and its direction is purely horizontal.
When a stone is projected horizontally in a vacuum, it only experiences horizontal motion due to the absence of air resistance. The vertical motion is governed by the force of gravity alone. In this scenario, the stone will undergo uniform horizontal motion with a constant horizontal velocity.
Given that the stone is projected horizontally with a velocity of 10 m/s, its horizontal velocity remains constant throughout the motion. After 2 seconds, the stone will have traveled a horizontal distance equal to the product of its horizontal velocity and the time, which is 10 m/s * 2 s = 20 m. Therefore, the stone will be located 20 meters horizontally from the point of projection. Since the stone is moving horizontally, its vertical velocity remains zero throughout the motion. The magnitude of the velocity at this point is equal to the horizontal velocity, which is 10 m/s. However, since the stone is moving horizontally, there is no vertical component of velocity.
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2. How much heat is needed to vaporize 1.22 kg of helium?
It would take 6416.8 kJ of heat to vaporize 1.22 kg of helium at its boiling point.
What is helium?
Helium is a chemical element with the symbol He and atomic number 2.
The amount of heat needed to vaporize a substance can be calculated using the formula:
Q = m * ΔHv
Where
Q is the amount of heat needed M is the mass of the substance being vaporized ΔHv is the heat of vaporization for the substanceFor helium, the heat of vaporization is 21.1 kJ/mol at its boiling point of -268.9°C. The molar mass of helium is 4.003 g/mol.
To calculate the amount of heat needed to vaporize 1.22 kg of helium, we first need to convert the mass to moles:
1.22 kg He * (1000 g / 1 kg) * (1 mol / 4.003 g) = 304.4 mol He
Then, we can use the formula to calculate the amount of heat needed:
Q = m * ΔHv = 304.4 mol * 21.1 kJ/mol = 6416.8 kJ
Therefore, it would take 6416.8 kJ of heat to vaporize 1.22 kg of helium at its boiling point.
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a positively charged body makes contact with a body. after a while, the charged body becomes neutralised. state 3 main conditions for this scenario to occur.
Answer:
A body will become positively charged when some electrons will come out from the body.Thus, positive charge is due to deficiency of electrons.
A baseball is thrown at a speed of 25 m/s and travels a distance of 100 m. How
far did it go?
You just said that it "... travels a distance of 100 m".
The Bamboozler, a notorious panda thief, is on the run. To evade capture, he travels
30 km east, then 25 km north, and finally 15 km west. What is the magnitude of the
Bamboozler's net displacement?
52 km
29 km
57 km
70 km
the correct answer is probably 70km
Use the simulation to complete the activity.
Force and Motion Basics (select Acceleration)
In one or two sentences, make a hypothesis about whether or not it is easier to start the box moving than to keep it moving on a rough surface. Then, explain how the simulation can be used to prove the hypothesis.
It is more difficult to get the object to move or keep moving on a rough surface.
What is friction?The term friction has to do with the opposition to the motion of an object. We know that friction could lead to a reduction in the speed of the object. If the surface is so rough, the motion an object would be difficult due to a greater resistive force that keeps the object from moving.
We can then see that it would be more difficult for the object to begin to move on the rough surface rather, motion could easily start and be sustained on quite a smooth surface as we can see.
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On a rough surface, it is more challenging to move or maintain the motion of the object due to friction between the object and the surface due to contact.
What is force?An object experiences a push or pull as a result of interacting with another object. Each object is subject to a force whenever two objects interact.
According to newton's law, an object tries to maintain its position whether it is at resting or it is in motion. If the body is at rest then it tries to maintain its rest position and if the body is in motion then again it tries to maintain its motion. So, if the box is at rest, it is difficult to move the box in starting because of inertia, but once it is in motion it is easy to keep on going with the flow.
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A 15-meter length of aluminum wire is at 20 degrees C. The radius of the wire is 4.2 x 10-4 meters. What’s the resistance of the wire?
Answer:
Idek figure it out
Explanation:
Why u so lazy?
How fast must a 250 gram cart be traveling to have a momentum of .450 Kgm/s?
The cart is 1.8 m/s fast when traveling.
The speed of the cart can be calculated using the formula of momentum.
Momentum:This can be defined as the product of mass and velocity.
Formula:M = mv.............. Equation 1Where:M = Momentum of the cartm = mass of the cartv = speed of the cart.
Make v the subject of the equation.
v = M/m................... Equation 2From the question,
Given:M = 0.450 kgm/sm = 250 g = 0.250 kg.Substitute these values into equation 2
v = 0.450/0.250v = 1.8 m/sHence, the speed of the cart is 1.8 m/s
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a tank contains 7,000 l of pure water. brine that contains 15 g of salt per liter of water is pumped into the tank at a rate of 25 l/min. (a) find the concentration of salt after t minutes (in g/l).
The initial concentration of salt in the tank is 0 g/l, since it only contains pure water.
To find the concentration of salt after t minutes, we need to consider the amount of salt being added to the tank and the total volume of water in the tank.
At a rate of 25 l/min, the amount of brine being added to the tank per minute is:
25 l/min * 15 g salt/l = 375 g/min
After t minutes, the total volume of water in the tank will be:
7,000 l + 25 l/min * t min = 7,000 + 25t l
So the concentration of salt after t minutes is:
concentration = (amount of salt added) / (total volume of water)
concentration = (375 g/min * t min) / (7,000 + 25t l)
Simplifying this expression, we get:
concentration = 375 / (140 + t) g/l
Therefore, the concentration of salt after t minutes is:
concentration = 375 / (140 + t) g/l.
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what is the meaning of velocity?
Answer:
Velocity is quickness of motion or action. A synonym is celerity; a simpler word is speed. In physics, velocity specifically refers to the measurement of the rate and direction of change in position of an object.pls pls mark me branilest
Answer:
Velocity is defined as displacement travelled per unit time in a fixed direction. It is a vector quantity as it has both magnitude and fixed direction.
Please mark me brainliest.
The nature-nurture question asks:
A) how can you overcome inherited traits
B) how do groups learn to get along
C) how much like humans are other animals
D) how do your environment and your genes interact to make you who you are
I WILL GIVE BRAINLEST
A bridge is constructed above a river such that an object dropped from it will reach the river after 4.5 seconds. A precocious youth takes a small stone and throws it downwards with some negative inital velocity so that it hits the river afer only 3 seconds. With what final velocity will the thrown stone hit the water?
Answer:
Vf = 11.04 m/s
Explanation:
First, we consider free fall motion with zero initial velocity. Using 2nd equation of motion:
h = Vi t + (1/2)gt²
where,
h = height of bridge = ?
Vi = Initial Speed = 0 m/s
t = time taken = 4.5 s
g = 9.8 m/s²
Therefore,
h = (0 m/s)(4.5 s) + (1/2)(9.8 m/s²)(4.5 s)²
Therefore,
h = 99.225 m
Now, we consider the forced motion when the youth throws the ball with some negative initial energy:
Vi = - Vi
t = 3 s
h = 99.225 m
Therefore,
99.225 m = - Vi(3 s) + (1/2)(9.8 m/s²)(3 s)²
Vi = (- 99.225 m + 44.145 m)/3 s
Vi = - 18.36 m/s
Now, we use this in 1st equation of motion for final velocity:
Vf = Vi + gt
Vf = -18.36 m/s + (9.8 m/s²)(3 s)
Therefore,
Vf = 11.04 m/s