which one of the following conditions would always result in an increase in the internal energy of a system? a. The system loses heat and does work on the surroundings.
b. The system gains heat and does work on the surroundings.
c. The system loses heat and has work done on it by the surroundings.
d. The system gains heat and has work done on it by the surroundings.
Answers
Option D; The system gains heat and has work done on it by the surroundings.
The force required to move an object a predetermined distance is referred to as the work done. It basically measures the amount of energy that is transmitted to or from an object to enable movement. The formula Work = Force Distance can be used to compute work. The joule (J) or Newton-meter (N-m) is the SI unit for work. When we apply a force called "F" to a block, the body moves with an acceleration or, additionally, its speed changes depending on the force's direction. The system's kinetic energy changes depending on whether the speed increases or decreases. Energy must be transformed into something other because, as we know, it cannot be created or destroyed.
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Related Questions
calculate the average translational kinetic energy, k, for one mole of gas at 413 k. translational kinetic energy is sometimes called average kinetic energy.
Answers
K = (3/2) * 8.314 J/(mol·K) * 413 K. Calculating this expression will give us the average translational kinetic energy for one mole of gas at 413 K.
The average translational kinetic energy, K, for one mole of gas at a given temperature can be calculated using the equation:K = (3/2) * R * T
Where: K is the average translational kinetic energy
R is the ideal gas constant (8.314 J/(mol·K))
T is the temperature in Kelvin
Substituting the given values into the equation:
K = (3/2) * 8.314 J/(mol·K) * 413 K
Calculating this expression will give us the average translational kinetic energy for one mole of gas at 413 K.
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Which two substances could be produced in a combustion reaction?
A. Carbon dioxide and oxygen
B. Carbon dioxide and water
C. Heptane and water
D. Heptane and oxygen
Answers
Answer: B. Carbon dioxide and water
Explanation: Combustion simply refers to burning. A combustion reaction may thus be explained as a chemical process which involves the reaction between a substance and an oxidizer usually oxygen gas. The combustion reaction in most cases involves the reaction between hydrocarbons which are combustible compounds and oxygen gas. The reaction between the combustible compound and oxygen gas is then followed by the release of energy, with the product being carbondioxid and water. Below is an example of combustion reaction.
Combustion the Methane CH4.
Here, CH4 reacts with oxygen gas(O2) to produce carbondioxide and water.
CH4 + 2O2 ------> CO2 + 2H2O
Answer:
Correct answer B
Explanation:
Just took quiz
1.Write the definition of each term in the definition column. Then decide whether that force produces motion and write either yes, no or it depends in the motion column. 2.For each diagram, determine the net force acting on the object. Follow the format for showing your work shown in (a). Then, write whether or not there will be a change in motion. If yes, write the direction the object will move in.
Answers
Answer:
UN balanced force to applied on that object
The force of gravity can also be referred to as the force of _____________.
Answers
Answer:
Gravitational.
Explanation:
In Earth, everything have a volume and mass, or downward force of gravity, which Earth's mass exerts on them.
I need the answer for both questions plzZz
Answers
Answer:
Im not really sure lemme ask my friend he knows about this subject and when he gives me answer ill edit this
Explanation:
Answer:
i dont even know
Explanation:
I just dont know
A cylinder has a radius of 4 inches (in.) . If its volume is 144 pi cubic inches (in.^ 3 ) what is the height of the cylinder?
Answers
Answer:
18 inches of cube
Explanation:
An alkane has molecular weight 86. Write its molecular formula. What will be its physical state?
Answers
C6H14
Gaseous state
it's unsaturated hence gaseous
A constant unbalanced force is applied to an object for a period of time. What will happen to the objects acceleration?
a. It will accelerate in the direction of the net force.
b. It will accelerate opposite the direction net force.
c. There is no acceleration.
d. Not enough information to answer
Answers
Answer:
A
Explanation:
The moving object will accelerate as long as a net force is applied. If a net force is not applied, the object will continue to move at a constant speed along the same path in curved spacetime (due to gravity). If the net force continues the velocity of the object will continue to increase until nearly reaching the limit (speed of light).
the evil team of ms. moonstruck and mr. luny intend to deflect the moon from its orbit around earth by pulling it with a force of 3530 n . they plan to accomplish this by placing a mini black hole 7.33×106 m from the center of the moon and letting gravitation do what gravitation does. what must the mass of the mini black hole be for the evil duo's evil scheme to succeed? the mass of the moon is 7.36×1022 kg .
Answers
In order for the wicked duo's plot to work, a small black hole with a mass of 38634.83 kg must exist.
How does science define force?Science has a specific definition for the term "force." At this point, describing a force as being pushed or pulled is quite acceptable. A strength is not something that something "contains" or "has in it." A force is applied to one thing by another. The idea of such a force encompasses either living and non-living things.
Briefing:To overcome this issue, you should be aware of Isaac Newton discovered an equation that expresses the gravitational effect of two mass-bearing things at a distance r. The formula is as follows:
where,
G = It is the universal gravitational constant = 6.67 x 10⁻¹¹ Nm²/kg²
m₁ = mass of the moon=7.36 × 10²² kg
m₂ = mass of the mini black hole
r = distance=7.33 × 10⁶ m
F = force=3530N
solving for m;
(F)(r²)/m₁(G) = m₂
3530*[(7.33 × 10⁶)²]/(7.36 × 10²²) (6.67 x 10⁻¹¹) = m₂
m₂ = 38634.83 kg
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it takes 5100 N of force to accelerate a ford mustang 3 m/s2 what is the mass of the car
Answers
Answer:
1700 kg
Explanation:
The mass of the ford mustang car be 1700 kg.
What is mass?In physics, mass is a quantitative measurement of inertia, a basic characteristic of all matter. It essentially refers to a body of matter's resistance to changing its speed or location in response to the application of a force.
The change caused by an applied force is smaller the more mass a body has. The kilograms serves as the unit of mass in the International System of Units (SI).
Given parameters:
Force applied on the ford mustang car: F = 5100 N.
Acceleration of the ford mustang car: a = 3 m/s^2.
So, The mass of the ford mustang car be = force/acceleration
= 5100/3 kg.
= 1700 kg.
Hence, the mass of the ford mustang car be 1700 kg.
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In a short-answer response, thoroughly describe what free-body diagrams are used for and what the free-body diagram is telling us about the directions of the forces. Make sure to include which direction the object will move and give an example of what that object could be. (examples: box, soccer ball, rope in a tug-of-war, etc.)
Use 2-4 sentences and proper conventions (spelling, grammar, punctuation, etc.) to respond. Put all answers in
Answers
A free body diagram is a diagram that shows the direction of the forces that are acting on a body.
What is a free body diagram?A free body diagram is a diagram that shows the direction of the forces that are acting on a body. We know that force is a vector quantity. This implies that the magnitude and the direction of a force are equally important when we are dealing with the forces.
Now, in a thug of war, there are two forces that are acting on the rope. The forces acts from the opposite ends in which the rope is being pulled. The rope would move in the direction in which the pulling that is exerted is found to be of greater magnitude.
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If a body of mass 4 kg moves at a velocity of 25 m/s and has a completely inelastic collision with a body of mass 10 kg, the final velocities of both the bodies is 14 m/s. Calculate the initial velocity of the body of mass 10 kg.
Answers
We are given the following information about an inelastic collision.
Mass of 1st object = 4 kg
Mass of 2nd object = 10 kg
Initial velocity of 1st object = 25 m/s
Final velocity of both objects = 14 m/s
Initial velocity of 2nd object = ?
In an inelastic collision, the momentum is conserved but the kinetic energy is not conserved.
Recall that the total momentum is conserved and given by
\(m_1u_1+m_2u_2=(m_1+m_2)v_2\)Let us substitute the given values and solve for initial velocity of the body (u2)
\(\begin{gathered} m_1u_1+m_2u_2=(m_1+m_2)v_2 \\ 4\cdot25+10\cdot u_2=(4+10)\cdot14 \\ 100+10\cdot u_2=196 \\ 10\cdot u_2=196-100 \\ 10\cdot u_2=96 \\ u_2=\frac{96}{10} \\ u_2=9.6\; \frac{m}{s} \end{gathered}\)Therefore, the initial velocity of the body of mass 10 kg is 9.6 m/s
An ocean wave usually occurs at a frequency of 0.2 Hz. What is the period of each wave.
Answers
5 seconds
Explanation
A wave is a disturbance in a medium that carries energy without a net movement of particles, the frequency is the number of waves that pass a fixed point in unit time
it is written as:
\(\begin{gathered} frequency=\frac{number\text{ ofwaves\lparen1\rparen}}{time\text{ \lparen second\rparen}} \\ \frac{1}{s}=\text{ 1 Hert \lparen1Hz\rparen} \\ the\text{ unit ofr frequency is hertz} \end{gathered}\)and the wave period is the time it takes to complete one cycle ,it is inversely proportional to the frequency of a wave, we can find the period using the formula
\(\begin{gathered} Perido\text{ \lparen T\rparen=}\frac{1}{Frequency(f)} \\ T=\frac{1}{f} \end{gathered}\)Step 1
given:
\(Frequency\text{ =0.2 HZ}\)now, replace in the formula
\(\begin{gathered} T=\frac{1}{f} \\ T=\frac{1}{0.2\text{ HZ}} \\ T=5\text{ seconds} \end{gathered}\)therefore, the Period is 5 seconds
I hope this helps you
A 90.0 kg man climbs hand over hand up a rope to a height of 15.2 m. How
much potential energy does he have at the top? (PE=mgh)
Need sum1 good at physics class
Answers
Answer:
13,680 JExplanation:
The potential energy of a body can be found by using the formula
PE = mgh
where
m is the mass
h is the height
g is the acceleration due to gravity which is 10 m/s²
From the question we have
PE = 90 × 10 × 15.2
We have the final answer as
13,680 JHope this helps you
if a 50 N block is resting on a steel table with a coefficient of static friction
Answers
If F = 37 N, the static frictional force between the block and the table and the minimum force required to move it must be equal.
How is the minimum force of static friction determined?It is the force that regulates itself. The value of static friction varies from zero to the smallest force required to initiate motion. The formula for determining static friction is as follows: Normal Force divided by the static friction coefficient is static friction.
Is weight equivalent to static friction?Although the maximum static friction will rise, the frictional force will always be the same as the weight in mg because friction cannot accelerate an object. Because FrN can take any value less than N to balance the weight, this is the case.
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What is the efficiency of a 10 hp DC motor that draws 31 amps at 300 volts?
Answers
The efficiency of a 10 hp DC motor that draws 31 A at 300 volts is equal to 80 %.
How to calculate the efficiency of a motor?The efficiency of a motor can be calculated from the ratio of the mechanical power output to the electric power input to the motor.
Given the horsepower of the DC motor = 10 hp
Conver the hp into watt:
1hp = 745.7 W
Output power = 10 hp = 10× 745.7 = 7457 W
Input power = 31 × 300 = 9300 W
The efficiency of the motor = Output/Input ×100
Efficiency = (7457/9300) ×100 = 80 %
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3. With a mass of 114 kg, Baby Bird is the smallest monoplane ever flown.
Suppose the Baby Bird and pilot are coasting along the runway when the pilot
jumps horizontally to the runway behind the plane. The pilot’s velocity upon
.
leaving the plane is 5.32 m/s backward. After the pilot jumps from the plane,
the plane coasts forward with a speed of 3.40 m/s. If the pilot's mass equals
60.0 kg, what is the velocity of the plane and pilot before the pilot jumps?
Answers
The speed of the plane and pilot before the pilot jumps is 17.8 m/s.
Conservation of linear momentumWe know that the principle of conservation of linear momentum states that the total momentum of a system is constant. This means that the momentum "before" and "after" must be equal.
Thus;
Momentum before = (114 Kg + 60.0 kg) v
Momentum after = (60.0 kg × -5.32 m/s) + (114 Kg × 3.40 m/s)
Hence;
(114 Kg + 60.0 kg) v = 3100.8
v = 3100.8/(114 + 60.0)
v = 17.8 m/s
The speed of the plane and pilot before the pilot jumps is 17.8 m/s.
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The distance from the center of a ferris wheel to a passenger seat is 12 m. What centripetal acceleration does a passenger experience when the wheel's angular speed is 0. 50 rad/s?
Answers
A passenger experiences centripetal acceleration when there is circular motion around a center. The centripetal acceleration is 3 m/s².
What is centripetal acceleration?The centripetal acceleration is the acceleration acting when a body is moving on a circular path. It is acted towards the center of the path. Centripetal acceleration is the product of the square of angular speed and radius of path.
a =ω²r
Given the radius of path r is 12 m and angular speed ω is 0.50 rad/s².
The resulting centripetal acceleration is
a = (0.50)²×12
a = 3 m/s²
Thus, the centripetal acceleration is 3 m/s².
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What name has been given to max plancks packets of light? what does it mean to say that the packets are quantized
Answers
the father sake to his daughter am happy with you change into reported speech
Answers
Answer:
I am happy with you the father said to his daughter
-50 1/2 + 12.3
What's answer
Answers
Answer:
-12.7
Explanation:
Answer: -38.2
Explanation: -50 1/2 + 10 = -40 1/2 + 2 = 38 1/2 + 0.3 = 38.2
Decribe what must happen inside of an aluminum can in order for it to be attracted to a positively-charged and to a negatively-charged object
Answers
Answer:
The PROTONS in the can attract to the negatively charged object, so then the can becomes polarized and the ELECTRONS in the can attract the positively charged object.
Explanation:
The PROTONS inside the can entice to the negatively charged object, so then the can will become polarized and the ELECTRONS in the can appeal to the undoubtedly charged item.
How are proton and electron associated?The number of protons within the nucleus of the atom is identical to the atomic range. The variety of electrons in an impartial atom is identical to the number of protons. The mass range of the atom (M) is equal to the sum of the wide variety of protons and neutrons inside the nucleus.
Protons definitely charged subatomic particles that live in the nucleus. Neutrons: Neutrally charged subatomic particles that are living in the nucleus. Electrons: Negatively charged subatomic debris found inside the electron shells surrounding the nucleus.
An electron is a negatively charged factor of an atom while the proton is an undoubtedly charged frame. The electrons are present out of doors the nucleus inside the orbiting shells. But the protons alongside neutrons shape the nucleus of the atom and are gifted in the middle of the atomic nuclei.
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Which has more kinetic
energy, a bowling ball or
a baseball rolling on a
table at the same speed?
Why?
Answers
Answer: a bowling ball
Explanation: a baseball doesn’t need as much kinetic energy because it’s smaller
If a bowling ball is rolling at the same speed as a small baseball then since the bowling ball is bigger it has more kinetic energy
Explanation: A baseball doesn’t require much kinetic energy because it is smaller than a bowling ball and much lighter.
Which statement best describes the relationship between velocity and acceleration?
Choose the correct answer.
O Velocity is the rate of change in acceleration,
O Acceleration is the rate of change in velocity
O Velocity and acceleration are not related to each other.
O Acceleration can only be a positive value regardless of the velocity.
Answers
Acceleration is actually defined as the rate of change in velocity. The correct option is B.
What are acceleration and velocity?Velocity is defined as the ratio of the distance moved by the object at a particular time. The velocity is a vector quantity and to represent its direction is also required with the magnitude. The unit of the measurement of the velocity is meter per second or miles per hour etc.
Acceleration is actually defined as the rate of change in velocity. In other words, it can be defined as the change in the velocity with the change in time of the object. Acceleration is also a vector quantity and requires direction and magnitude to represent it. The unit of measurement of the acceleration is a meter per second square.
Therefore, acceleration is actually defined as the rate of change in velocity. The correct option is B.
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Which statement is not true about light? 1 point It is a particle and a wave It has mechanical and transverse waves It has mechanical and longitudinal waves It has electromagnetic and transverse waves
Answers
Answer:
Option C
Explanation:
Light is an electromagnetic wave as it has characteristics of both electrical and magnetic waves. It is not a mechanical wave. Water and sound wave are mechanical wave as they need some medium to travel while light do not need any medium to travel.
Hence, option C is correct
Explain why electromagnetic forces are essential to forming compounds.
Answers
Explanation:
formation of compounds because the electric forces compel the atoms to attract each other and formed bonds which leads to the formation of chemical compounds. The attractive or repulsive interaction between any two charged bodies is known as an electric force so the attraction between two opposite charged atoms causes the formation of compounds so we can conclude that electric forces are important for the formation of compounds.
How does the type of medium affect a sound wave?
Answers
Answer:
For a given force (as determined by the elastic modulus), "light" molecules can oscillate at a greater frequency than "heavy" molecules; so a less dense medium will have a higher frequency per wavelength (i.e. a higher wave speed) than a more dense medium. The speed of sound in air is 332m/s.
Explanation:
i need one more brainliest plz
Depending on the different mediums, sound can travel faster through them.
A car's horn produces a constant frequency of 350 Hz as it passes by Suzy. What is the best estimate of the
frequency Suzy hears after the car passes her?
330 Hz
350 Hz
360 Hz
700 Hz
Answers
Answer:
330 Hz
Explanation:
edg2020
The best estimate of the frequency Suzy hears after the car passes her is govern by doppler effect and it is 330 Hz.
What is frequency?Frequency is the number of occurrences of a repeating event per unit of time.
What is Doppler EFFECT?
The Doppler effect is the change in frequency of a wave in relation to an observer who is moving relative to the wave source.
According to the Doppler Effect, the frequency observed by an observer decreases for source going away.
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if i raise a 2 kg book 0.8m over my head determine the amount of work that i have done
Answers
If you raise a 2 kg book 0.8m over your head, the amount of work that you have done is 15.68 J
F = m g
F = Force
m = Mass
g = Acceleration due to gravity
m = 2 kg
g = 9.8 m / s²
F = 2 * 9.8
F = 19.6 N
W = F d cos θ
W = Work done
d = Distance
θ = Angle between force and displacement vector
d = 0.8 m
θ = 0
W = 19.6 * 0.8
W = 15.68 J
Therefore, the amount of work that you have done is 15.68 J
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For the following questions, please provide a complete step by step solution. You do notneed interaction, but you are required force diagrams.
Answers
Tennsion 1= horizontal = 484.94 N
Tension 2 = slanted string = 560 N
Explanation
Step 1
Free body diagram
Newton's first law says that if the net force on an object is zero, like in this case the mass is in rest,then that object will have zero acceleration
so
Step 1
set the equations:
a) for x-axis
\(\begin{gathered} \sum ^{}_{}F_x=0 \\ so \\ T_{2x}-T_1=0 \\ T_2\cos 30-T_1=0\rightarrow equation(1) \end{gathered}\)b) for y -axis
\(\begin{gathered} \sum ^{}_{}F_y=0 \\ so \\ T_{2y}-w=0 \\ T_2\sin 30-280N=0\rightarrow equation(2) \end{gathered}\)Step 2
Solve the equations
\(\begin{gathered} T_2\cos 30-T_1=0\rightarrow equation(1) \\ T_2\sin 30-280N=0\rightarrow equation(2) \end{gathered}\)a) solve for T2in equation (2)
\(\begin{gathered} T_2\sin 30-280N=0\rightarrow equation(2 \\ \text{add 280 N in both sides} \\ T_2\sin 30-280N+280N=0+280\text{ N} \\ T_2\sin 30=280\text{ N} \\ \text{divide both sides by sin 30} \\ \frac{T_2\sin30}{\sin30}=\frac{280\text{ N}}{\sin30} \\ T_2=560\text{ N} \end{gathered}\)b) replace the T2 value in equation (1) to find T1
\(\begin{gathered} T_2\cos 30-T_1=0\rightarrow equation(1) \\ 560\cos 30-T_1=0\rightarrow equation(1) \\ 484.97-T_1=0 \\ 484.97=T_1 \end{gathered}\)therefore
Tennsion 1= horizontal = 484.94 N
Tension 2 = slanted string = 560 N
I hope this helps you
