What is the second law of thermodynamics?

Q: (II) Show that the rms speed of molecules in a gas is given by vrms = V3P/p, where P is the pressure...

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Q: A ball rolling down an incline travels 6.0 cm in the first 0.25 seconds, and 24 cm in the first 0.50...

A: a) The average speed for the first quarter second time interval is, v1avg=Δx1Δt1=6.0×10-2 m0.25 s=0....

Q: A car speedometer that is supposed to read the linear speedof the car uses a device that actually me...

A: The angular speed of the tire is estimated by speedometer. The reading of the speedometer is affecte...

Q: (II) A sealed metal container contains a gas at 20.0°C and1.00 atm. To what temperature must the gas...

A: Using ideal gas equation, P1VP2V=nRT1nRT2T2=T1P2P1

Q: For his early morning exercise, Andee jogged 5 times around a circular track of radius 5 m. Find his...

A: Given: The radius of the circular track = 5 m Number of rounds = 5

Q: Shown is a 10-cm-diameter loop in three different magnetic fields. The loop’s resistance is 0.10 Ω. ...

A: a) Given data The diameter of the loop is d = 10 cm. The resistance in the loop is R = 0.10 Ω. The m...

Q: (II) Determine the fundamental and first overtone frequencies when you are in a 9.0-m-long hallway w...

A: Solution: Given values, Length (L)= 9.0 m It is given that Tube is closed at both ends hence it is c...

Q: A ball rolls up a hill . It had an acceleration of -4.0 m/s^2 if it takes 2.0 seconds for the ball t...

A:

Q: A cop spots a speeder on the freeway going 45.0 m/s. It takes the cop 2.9 seconds to get their car g...

A: Given data The speed of the speeder is, u=45.0 m/s The time to start the car is t1= 2.9 s The accele...

Q: . Is it possible to boil water at room temperature (20°C)without heating it? Explain

A: Boiling of water 

Q: An ammeter is (incorrectly) inserted into a circuit as shown.a. What is the current through the 5.0 ...

A:

Q: (a) When water freezes, its volume increases by 9.05% (that is, ). What force per unit area is water...

A: The increase in volume is given by  ∆VV0=1B×FA here, B is the Bulk modulus, F is the force, A is the...

Q: An Alaskan rescue plane drops a package of emergency rations to stranded hikers. The plane is travel...

A: Given values, Speed of plane, v=35 m/s Height, H=1.05×102 m

Q: 2C, D

A: 2(c) ∂y In above graph X-axis= acceleration (m/s2) Y-axis = net force (N) Slope: X-axis- 1 unit = 0....

Q: (II) The rms speed of molecules in a gas at 20.0°C is to beincreased by 4.0%. To what temperature mu...

A: Convert the temperature from degree Celsius to Kelvin.

Q: Q2

A: To determine,the correct option.statement:the toy car moves towards left with constant speed. The fo...

Q: Three capacitors are connected as shown in the figure. C1 = 7.8 μF, C2 = 7.4 μF, C3 = 1.1 μF. The vo...

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Q: A 70 kg human body typically contains 140 g of potassium. Potassium has a chemical atomic mass of 39...

A: The number of K-atoms present in the sample is, Number of K atoms=Given massMolarmass×Avogadro numbe...

Q: The 2.0-cm-diameter solenoid shown passes through the center of a 6.0-cm-diameter loop. The magnetic...

A: To determine,the magnetic flux through the loop (a) when it is perpendicular to the solenoid and (b)...

Q: (I) The predominant frequency of a certain fire truck’s siren is 1650 Hz when at rest. What frequenc...

A: Given data The frequency of the fire truck siren is: ft = 1650 Hz The speed of the observer is: vo =...

Q: A space vehicle is coasting at a constant velocity of 17.8 m/s in the +y direction relative to a spa...

A: Given Data: The velocity in the y-direction is, vy=17.8 m/s The acceleration in the x-direction is, ...

Q: A passenger railroad car has a total of 8 wheels. Springs on each wheel compress—slightly—when the c...

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Q: A stationary boat in the ocean is experiencing waves from a storm. The waves move at 56 km/h and hav...

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Q: The intensity at the threshold of hearing for the human ear at a frequency of about 1000 Hz is 1l, =...

A: Intensity is given by, I=2π2ρvf2A2 From the above expression, I∝A2

Q: There is an analogy between rotational and linear physical quantities. What rotational quantities ar...

A: analogy between rotational and linear physical quantities

Q: Two point charges are brought closer together, increasing the force between them by a factor of 25. ...

A: The force between the two charges is given by the equation,

Q: (II) Two piano strings are supposed to be vibrating at 220 Hz, but a piano tuner hears three beats e...

A: Given: frequency of vibration = 220 Hz Time required = 2.5 s

Q: (II) To make a secure fit, rivets that are larger than therivet hole are often used and the rivet is...

A: The linear expansion for a change in temperature is written below, Lf = the final diameter Li = the...

Q: You’re driving down the highway late one night at 20 m/s when a deer steps onto the road 35 m in fro...

A:

Q: By using antenna rods of several different lengths, the antenna shown is designed to pick up signals...

A: As we know,  Working of antenna is based on the principle of electrical resonance.  Most of the ante...

Q: (II) An object of unknown mass m is hung from a vertical spring of unknown spring constant k, and th...

A: Given: The spring is stretched by 14 cm.

Q: The intensity of a beam of light is increased but the light’s frequency is unchanged. As a result, w...

A: Intensity of light is defined as the amount of flux passes per unit area per unit interval of time o...

Q: (III) Two loudspeakers are 1.60 m apart. A person stands3.00 m from one speaker and 3.50 m from the ...

A: Given, Two loudspeakers are 1.60 m apart and person stands 3.00 m from one speaker and 3.50 m from t...

Q: In the graph from the class handout the inflow of energy from the sun is given as a constant 236 wat...

A: The relation between Solar’s constant, Planet’s albedo and energy inflow can be given by, 14L(1-α)=E...

Q: (II) A wave on the ocean surface with wavelength 44 m travels east at a speed of 18 m/s relative to ...

A: Given: The wavelength λ = 44 m. The speed of the wave is Vw = 18 m/s. The velocity of the boat is Vb...

Q: Microphones are used to convert sound vibrations to electrical signals. In one kind of microphone, s...

A:

Q: The volume of a sphere is given byV=(4/3)πr^3, whereris the sphere’s radius. For solid spheres with ...

A: The mass m, volume V, and density ρof an object are related by the following equation. ρ=mV    ---(1...

Q: (II) If the pressure in a gas is tripled while its volume isheld constant, by what factor does vrmsc...

A: The expression to solve for the rms velocity of the gas is as follows: vrms=3RTM           1 Accordi...

Q: (II) What is the linear speed, due to the Earth’s rotation,of a point (a) on the equator, (b) on the...

A: The angular speed of the earth, ω=1 rev1 day=1 rev1 day×2π rad1 rev×1 day86400 s=2π rad86400 s

Q: As a coil moves to the right at constant speed, it passes over the north pole of a magnet and then m...

A: There will be an induced emf produced in the coil, when there is change in the magnetic flux linked ...

Q: (II) An ordinary glass is filled to the brim with 450.0 mL ofwater at 100.0°C. If the temperature of...

A:

Q: The Shinkansen (bullet train in Japan) makes a trip from Tokyo Station to Kyoto station in 2.0 hours...

A: Given  The total distance between Tokyo Station to Kyoto station is DTotal = 460 km = 460 x 1000 m =...

Q: Explain why it is advisable to add water to an overheated automobile engine only slowly, and only wi...

A: Suppose water is added to the overheated engine at a faster rate, there will be rapid cooling of som...

Q: (I) A concrete highway is built of slabs 12 m long (15°C).How wide should the expansion cracks betwe...

A: linear expansion coefficient of slab is 12*10^-1 per degree Celsius.  

First law of Thermodynamics

The word thermodynamics consists of two words: thermo- and dynamics. Dynamics means the study of motion. The field of thermodynamics is all about the study of the movement of heat. In a more meaningful way, it is stated as the study of the transfer of energy. Energy transfer is something that we encounter in day-to-day life. Automobiles, chemical reactions, refrigerators, and power generators work on the basis of thermodynamic principles.