calculate the energy in joules released by the fusion of a 2.75 -kg mixture of deuterium and tritium, which produces helium. there are equal numbers of deuterium and tritium nuclei in the mixture.
Answers
The total energy output is the number of reactions times the energy per reaction is 2.53×10¹⁴ J.
The atomic mass of deuterium (²H) is 2.014102 u,
while that of tritium (³H) is 3.016049 u,
For a total mass of reactants
(2.014102 + 3.016049) = 5.032151 u /reaction.
So a mole of reactants has a mass of 5.03 g and 0.75 kg
= (750) ÷ (5.03)
= 149.1 mol of reactants.
The number of reactions that take place is therefore
= (148.1) × (6.02×10²³)
= 0.9×10²⁶ reactions.
The total energy output is the number of reactions times the energy per reaction:
E = (0.9×10²⁶) × (17.59) × (1.602×10⁻¹³)
E = 2.53×10¹⁴ J
Therefore, The total energy output is the number of reactions times the energy per reaction is 2.53×10¹⁴ J.
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Related Questions
in 1974, astronomers sent a message toward globular cluster m13. if life exists there, and it returns our signal, we won’t receive it for at least another 50,000 years. why?
Answers
Since M13 is so far away, even light takes a very long time to get there.
M13 is situated between Vega and Arcturus, the two brightest stars during the summer, in the constellation Hercules. Find the four moderately brilliant stars that make up the Keystone of Hercules around one-third of the way from Vega to Arcturus. One of the almost 150 globular clusters that encircle our Milky Way galaxy is M13. Some of the universe's earliest stars may be found in globular clusters. They are older than almost all other stars in our galaxy because they probably originated before the Milky Way disk.
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Which object has more gravitational potential energy
Answers
Answer:
need more context
Explanation:
Answer:
EL QUE TENGA MÁS MASA Y MÁS ALTURA.
Explanation:
consider two stars, star a and star b. star a has a temperature of 4900 k , and star b has a temperature of 9900 k . how many times larger is the energy flux from star b compared to the energy flux from star a?
Answers
The Energy flux from Star B is 16 times of the energy flux from Star A.
We have Two stars - A and B with 4900 k and 9900 k surface temperatures.
We have to determine how many times larger is the energy flux from Star B compared to the energy flux from Star A.
State Stephen's Law?Stephens law states that if E is the energy radiated away from the star in the form of electromagnetic radiation, T is the surface temperature of the star, and σ is a constant known as the Stephan-Boltzmann constant then-
\($\frac{Energy}{Area} = \sigma\times T^{4}\)
Now -
Energy emitted per unit surface area of Star is called Energy flux. Let us denote it by E. Then -
\($E= \sigma\times T^{4}\)
Now -
For Star A →
\(T_{A}\) = 4900 K
For Star B →
\(T_{B}\) = 9900 K
Therefore -
\($\frac{T_{B} }{T_{A} } =\frac{9900}{4900}\)
\(\frac{T_{B} }{T_{A} }=\) 2.02 = 2 (Approx.)
Now -
Assume that the energy flux of Star A is E(A) and that of Star B is E(B). Then -
\($\frac{E(B)}{E(A)} = \frac{\sigma\times T(B)^{4} }{\sigma \times T(A)^{2} }\)
E(B) = E(A) x \((\frac{T(B)}{T(A)} )^{4}\)
E(B) = E(A) x \(2^{4}\)
E(B) = 16 E(A)
Hence, the Energy flux from Star B is 16 times of the energy flux from Star A.
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if vector A =i+2j-k and vec A cross vec B =3i-j+5k. find vec B
Answers
Let B = a i + b j + c k. Then the cross product of A = i + 2j - k with B is
A × B = ( i + 2j - k ) × ( a i + b j + c k )
A × B = a ( i × i ) + 2a ( j × i ) - a ( k × i )
… … … + b ( i × j ) + 2b ( j × j ) - b ( k × j )
… … … + c ( i × k ) + 2c ( j × k ) - c ( k × k )
A × B = 0 - 2a k - a j
… … … + b k + 0 + b i
… … … - c j + 2c i - 0
A × B = (b + 2c) i + (-a - c) j + (b - 2a) k
So we have
3 i - j + 5 k = (b + 2c) i + (c - a) j + (b - 2a) k
which gives us the system of equations,
{ b + 2c = 3
{ -a - c = -1
{ -2a + b = 5
Solve for a, b, and c.
• Eliminate c from the first two equations:
(b + 2c) + 2 (-a - c) = 3 + 2 (-1)
-2a + b = 1
But -2a + b = 5, and 5 ≠ 1, so there is no such vector B that satisfies the cross product!
67. A mechanical wave is one of the most efficient forms of energy transmission in
nature. ____________________
Answers
A wave transmits energy or information from one point to another in the form of signals. We are completely dependent on waves for all of our wireless communications. So a wave is a flow of energy.
A mechanical wave is defined as a wave which is an oscillation of matter and it is responsible for the transfer of energy through a medium. The distance of the wave's propagation is limited by the medium of transmission.
There are two types of mechanical waves, they are transverse and longitudinal waves. In longitudinal waves, the movement of particles is parallel to the motion of energy and in transverse waves the movement of particles is at right angles to the motion of energy.
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which of these physical quantities does not have any units
Answers
A dimensionless quantity is a physical quantity that has no units. It is the result of the multiplication or division of two or more physical quantities that have different units. Examples of dimensionless quantities include the coefficient of friction, electrical conductance, angles, and Mach number.
The quantity that does not have any units is called a dimensionless quantity. It is the result of dividing or multiplying two or more physical quantities having different units. An example of a dimensionless quantity is the coefficient of friction, which is a ratio of two forces, and the unit of force cancels out.
The reason behind this is that it is a result of multiplication or division of two or more physical quantities with different units. For example, the coefficient of friction is a dimensionless quantity that represents the ratio of two forces. Therefore, it has no units.
Some other examples of dimensionless quantities include ratios, fractions, and percentages. For instance, electrical conductance, which is a ratio of electrical current and voltage, is a dimensionless quantity. Similarly, angles, which are also ratios of distances, are dimensionless quantities. As another example, Mach number is also a dimensionless quantity that represents the ratio of the speed of an object to the speed of sound in the medium. It is unitless because it is a result of the division of two different velocity measurements.
A dimensionless quantity is a physical quantity that has no units. It is the result of the multiplication or division of two or more physical quantities that have different units. Examples of dimensionless quantities include the coefficient of friction, electrical conductance, angles, and Mach number.
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What's energy band theory???
Answers
Answer:
Energy band theory is a basis for describing processes and effects in solid crystals under electromagnetic field impact.
Explanation:
Single atoms have a discrete energy spectrum, which means they can occupy only discrete energy levels. Part of these energy levels are filled with electrons in a non-excited condition. Part of these levels can be occupied only when electrons are excited.
Keesha conducts an experiment by pouring equal amounts of boiling water into four containers. The containers are the same size and shape, but they are made of different materials. The chart lists the containers according to their materials. A 2-column table with 4 rows. The first column labeled Container has entries W, X, Y, Z. The second column labeled Material has entries foam, glass, plastic, stainless steel. Using protective gloves, Keesha carefully touches each container immediately after pouring the water. Which container was likely the hottest? W X Y Z.
Answers
Option Z is correct. The stainless steel container was likely the hottest. Stainless steel is an excellent heat conductor because it quickly warms the substance.
What are the qualities of stainless steel?Stainless steel is an excellent heat conductor because it quickly warms the substance or allows heat to travel through it. Stainless steel is also corrosion-resistant.
Foam, glass, and plastic, on the other hand, are all poor heat and electrical conductors. As a result, they do not allow heat to travel through.
As a result, we may deduce that, among the available possibilities, the stainless steel container was most likely the hottest.
Hence Option Z is correct. The stainless steel container was likely the hottest.
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A bicyclist moves at a constant speed of 6 m/s. How long it will take for the point bicyclist to move 36 m?
Answers
Answer:
6 seconds
Explanation:
make me brainliest
Answer:
Somuchcringe answered correctly you mark him brainliest
Explanation:
A 2.75 kg block is pulled across a flat, frictionless floor with a 5.11 N force directed 53.8° above horizontal. What is the total force acting on the block? (total force = N)
Answers
Answer:
F = 3.01 N
Explanation:
Given that,
Mass of a block, m = 2.75 kg
Force applied to the block, F = 5.11 N
It is directed 53.8° above horizontal.
We need to find the total force acting on the block. The force acting on it is given by :
\(F=F\cos\theta\\\\F=5.11\times \cos53.8\\F=3.01\ N\)
So, 3.01 N of force is acting on the block.
3.01 works as the right answer
The unit for acceleration is always
Answers
Explanation:
Because acceleration is velocity in m/s divided by time in s, the SI units for acceleration are m/s2, meters per second squared or meters per second per second, which literally means by how many meters per second the velocity changes every second. ... The quicker you turn, the greater the acceleration.
Which statements describe a situation in which work is being done? Select three options. A mover carries a box up a flight of stairs. A mover carries a box across a room. Wind blows against a steel table anchored to the ground. Wind blows a pool chair across the yard. A weightlifter lifts a barbell off the ground. A weightlifter holds a barbell above the head.
Answers
Answer:
ADE
Explanation:
Answer:
-A mover carries a box up a flight of stairs.
-Wind blows a pool chair across the yard.
-A weightlifter lifts a barbell off the ground.
Explanation:
TRUSTTTT A HOOOEEEE
How much force is required to stop a 0.25 Kg ball moving at 5 m/s during a time of 0.01
seconds?
Answers
The force required to stop a 0.25 Kg ball moving at 5 m/s during a time of 0.01 seconds is 2.5 Newtons.
How much force is required to stop a 0.25 Kg ball moving at 5 m/s during a time of 0.01 seconds?This can be calculated using the equation F = m*a, where m is the mass of the object (0.25 Kg) and a is the acceleration (5 m/s/0.01 seconds).Thus, F = 0.25 * 5 = 2.5 N.The force required to stop a 0.25 Kg ball moving at 5 m/s during a time of 0.01 seconds is 12.5 N. This is a type of impulse force, which is a force that acts over a period of time rather than a single instantaneous force. Impulse forces are typically used to change momentum. In this case, the impulse force is being used to reduce the momentum of the ball from 5 kgm/s to 0 kgm/s in the space of 0.01 seconds.This is achieved by applying a force of 12.5 N over the 0.01 second period. This is known as an impulse force because it is applied over a period of time, rather than in a single instantaneous action. This type of force is often used in physics problems to determine the momentum of a moving object, as it allows for the calculation of the force needed to stop the object in a certain amount of time.To learn more about impulse force refer to:
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Which of the following is part of a treatment program for laboratory animal allergies?
Dilantin
Mast cell stabilizer
Answers
Mast cell stabilizer is part of a treatment program for laboratory animal allergies.
What are animal allergies? Animal allergies occur when a person's immune system overreacts to an allergen in an animal's body. Pet allergies are more common, but anyone who works with or around laboratory animals may develop allergies to them. When a person is exposed to animal allergens, their immune system produces a response that causes allergic symptoms in the body.
The following are some of the treatment options for animal allergies:
Antihistamines: Antihistamines are used to alleviate allergic symptoms such as itching, sneezing, and runny nose. Antihistamines work by blocking histamine, a chemical produced by the body in response to an allergen.
Mast cell stabilizers: Mast cell stabilizers prevent the release of histamine and other chemicals that cause allergy symptoms. These drugs can take a few weeks to become fully effective.
Nasal corticosteroids: These nasal sprays relieve inflammation in the nasal passages, which can reduce the severity of allergy symptoms.
Allergy shots: Allergy shots, or immunotherapy, can be used to treat severe animal allergies. Immunotherapy works by exposing the patient to small amounts of the allergen over time, which can reduce the body's immune response to the allergen. Dilantin is an anticonvulsant medication that is used to treat seizures. It is not used in the treatment of animal allergies.
Therefore, Mast cell stabilizer is part of a treatment program for laboratory animal allergies.
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20 points !!! An infrared wave traveling at the speed of light has a wavelength of 2x10^-5 m. Calculate the frequency of this wave.
Answers
Answer:
f=1.5MHz or f=1500Hz
Explanation:
f=v/λ
3×10⁸/2×10-⁵
f=1500Hz
f=1.5MHz
I need help! Picture is the sheet.
Answers
Answer:
The answers to the questions are
1. Sound energy
2. Conductor
3. Flow
4. Thermal energy (g underlined)
5. Electric current
6. Insulator
7. Light energy
8. Electric circuit
The underlined letters are, e, n, g, r, y, e which can be rearranged to spell energy
Explanation:
1. Sound energy is the wave form of mechanical energy that is transferred by the vibration of the of the medium through which it propagates
2. An electrical conductor is used to conduct electricity from one point to another
3. An object or material flows when it has a smooth motion towards a given direction, such as a river
4. Thermal energy is the form of energy that is given off by a body as sensible heat that can be measured as a temperature by a thermometer
5. Electric current is the electricity in a circuit
6. An insulator is a material that limits the flow of electricity or heat
7. Light energy is the form electromagnetic energy which the eye can sense
8. An electric current flows an electric circuit which consist of a source of electricity and an path through which the electric current can easily flow.
The particles of a GAS within a closed container will collide with the container walls, exerting a FORCE. The force per unit of AREA is known as what?
Answers
Answer:
Pressure
Explanation:
One of the theories propounded by the Kinetic molecular theory, and which also provides an explanation of the several gas laws, is the statement that the gas molecules in a container, travel in straight lines and are in constant collision with themselves and the walls of the container, thus exerting force. This force is the pressure which is defined as the force per unit area.
There is no loss of energy in the collisions involving the gas molecules and that is why their movement can be described as elastic. The descriptions of the behavior of gas molecules in the Kinetic Molecular Theory, give rise to Charles law, Boyle's Law, Avogadro's Laws, Dalton's Law, and Amonton's Law.
Answer:
The pressure
Explanation:
Molecules of gases are constantly in motion, colliding with the walls of their container. This constant collision impacts force on the walls of the container, which depends on the speed with which the molecules are moving. The speed with which these molecules travel depends on the average kinetic energy of the molecules, which is proportional to the temperature.
This force when exerted per unit area is the pressure the gases exert on the walls of the container.
An 18kg block moving at 6 m/s has kinetic energy of
Answers
½ × 18 × 6² = 324 J
hope that helps^^
A system does 80 J of work on its surroundings and releases 20 J of heat into its surrounding. what is the change of energy of the system?
A. 60j
B. -100j
C. 100j
D. -60j
Answers
Answer:
B
Explanation:
The wording of this question leaves a lot to be desired. The way it reads, it should be 60J., but I'm almost certain that is not the intended answer.
The answer looks like it should be 100J of some kind. It's worded in such a way that it does 80 J of work on the surroundings and in addition, releases another 20 joules in the form of heat. It doing this, the system should be losing 100 Joules so the answer should be B.
There are no guarantees here. That is just my best proposal.
What is the power output of a pump which can raise 60kg of water height to height of 10m every minute
Answers
Answer:
Power = Work Done/time=> Power = 60×10×10/60
=> Power = 6000/60
=> Power = 100 Watt
Hence the power output of a pump is 100 Watts.
which planet will receive a radio signal that is redshifted and which planet receives a radio signal that is blueshifted respectively?
Answers
need more context than that to answer
Calculate the total work done (J) by a force given by: F = ( 3i
-6j) N to move an object a displacement given by: R = ( 8i +
6k) m
O a
- 12
Rb
18 i-48)
C C
C
24i - 36j
O d.
d
+ 24
Answers
Work done (J) by the force is 60i - 78j + 18k.
Given,
F = (3i - 6j) NR
= (8i + 6k) m – 12i – 18j + 24J
= F * dJ = (3i - 6j) * (8i + 6k – 12i – 18j + 24)J
= (3i - 6j) * (-4i - 18j + 6k + 24)J
= (-12i - 54j + 18k + 72i - 24j)J
= (60i - 78j + 18k)J
Work done (J) by the force is 60i - 78j + 18k.
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A nurse counts 76 heartbeats in one minute.
How many heartbeats would occur in 30 seconds?
Answers
Answer:
38
Explanation:
76 divided by 2 =38
A spring scale is used to exert a net force of 2.7 N on a cart.If the cart's mass is 0.64 kg,what is the cart's acceleration?
Answers
Answer:
4.2 m/s2
Explanation:
By using Newton's second law, the cart's acceleration is 4.2 m/\(s^{2}\)
Given that a spring scale is used to exert a net force of 2.7 N on a cart.
If the cart's mass is 0.64 kg, then, we can use Newton's second law to solve the question.
F = ma
Force F = 2.7 N
Mass m = 0.64 kg
Acceleration a = ?
Substitute all the parameters into the formula
2.7 = 0.64a
a = 2.7/0.64
a = 4.2 m/\(s^{2}\)
Therefore, the cart's acceleration is 4.2 m/\(s^{2}\)
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the ball is thrown up . the direction of g will be ? 1. vertically downward 2. vertically upward 3. horizontal 4. nine of these
Answers
Answer:
1 because gravity pulls the object down towards the centre of the Earth.
You are trying to gain possession of the soccer ball. What position are you playing?
a. both offense and defense
b. neither offense or defense
c. offense
d. defense
Answers
Answer:
a
Explanation:
Answer:
it's d. Defense
defense
Explanation:
yes
A 1,725 kg car accelerates from 3.0 m/s for 4.4 s and reaches a velocity of 12.0 m/s. Ignoring friction, what is the applied force from the engine?
Answers
Given:
The mass of the car is m = 1725 kg
The initial velocity of the car is
\(v_i=\text{ 3 m/s}\)The final velocity of the car is
\(v_f=\text{ 12 m/s}\)The time is t = 4.4 s
To find the applied force.
Explanation:
The force can be calculated by the formula
\(F=\text{ ma}\)Here, a is the acceleration.
The acceleration can be calculated as
\(\begin{gathered} a=\frac{v_f-v_i}{t} \\ =\frac{12-3}{4.4} \\ =2.045\text{ m/s}^2 \end{gathered}\)On substituting the values, the force applied will be
\(\begin{gathered} F=ma \\ =1725\times2.045 \\ =3527.625\text{ N} \end{gathered}\)Thus, the applied force is 3527.625 N
Define the term sorting
Answers
Answer: arrange systematically in groups; separate according to type, class, etc.
Explanation:
i hooked this up btw
Wegner's idea of plates moving was not accepted until it was determined how they could move. it is now thought that plates move due to ______________ in the earth's mantle.
Answers
Wegner's idea of plates moving was not accepted until it was determined how they could move. It is now thought that plates move due to convection currents in the Earth's mantle.
Convection currents are the movement of heat within a fluid, such as the Earth's mantle, which is made up of hot, molten rock. The heat from the Earth's core causes the rock in the mantle to heat up and become less dense, causing it to rise. As it rises, it cools and becomes denser, causing it to sink back down. This constant movement of the mantle creates convection currents, which are thought to be the driving force behind the movement of the Earth's plates.
In summary, Wegner's idea of plate movement was not accepted until it was determined that convection currents in the Earth's mantle were the driving force behind the movement of the plates.
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I need an answer ASAP, so if anyone can help right away that would be amazing!
A current-carrying wire with many loops is called
a magnetic field.
a wire coil.
a solenoid.
a bar magnet.
Answers
Answer: Solenoid
Explanation:
Answer:
Solenoid
Explanation:
