9) The second law of thermodynamics leads us to conclude that A) disorder in the universe is increasing with the passage of time. B) the entropy of the universe remains constant. C) the average temperature of the universe is increasing with the passage of time. D) the total energy of the universe is constant. E) it is theoretically possible to convert heat into work with 100% efficiency.

Q: 1) A plastic rod is charged up by rubbing a wool cloth, and brought to an initially neutral metallic…

A: Correct answer is option ClB The rod is repelled by the sphere

Q: Describe your materials and how the demonstration works. You must make diagrams of your setups…

A: We can understand Charging by conduction as it involves the contact of a charged object to a neutral…

Q: 18) Two protons are fired toward each other in a particle accelerator, with only the electrostatic…

A: As two protons are fired towards each other there would be repulsion between them due to the…

Q: 18) Two isolated copper plates, each of area 0.40 m², carry opposite charges of magnitude 7.08 x…

A: The correct answer is option B Potential difference = 8 V

Q: How many electrons are necessary to produce 1.0 C of negative charge? (e=1.60 x 10-19 C) A) 6.3 x…

A: We know thatQ=neWhereQ=chargen=number of electronse=charge of electron

Q: The figure shows electric field lines arising from two small charged particles P and Q. Consider the…

A:

Q: 10. (I) An EM wave has a wavelength of 720 nm. What is its frequency, and how would we classify it?

A: Given  wavelength of EM wave = 720 nm Required frequency

Q: 18) A bar magnet is pushed through a coil of wire of cross-sectional area 0.020 m² as shown in the…

A: Given : Area (A) = 0.020 m2 Number of turns (N) = 7 Rate of change of strength of magnetic field :…

Q: 12) A bar magnet is oriented above a copper ring, as shown in the figure. The magnet is dropped and…

A: According to lenz's law Induced emf always opposes the cause by which it is produced.

Q: (II) (a) What is the wavelength of a 22.75 × 10° Hz radar signal? (b) What is the frequency of an…

A: Data we have frequency,f=22.75×109Hz speed of light,v=3×108m/s

Q: 7) The magnetic field at a distance of 2 cm from a long straight current-carrying wire is 4 μT. What…

A: The magnetic field at a distance r1=2 cm from the straight long current carrying wire is B1=4μT…

Q: 13) In the figure, a bar magnet moves away from the solenoid. The direction of the induced current…

A: We have a solenoid with a resistor connected to it and a bar magnet whose south pole is moved away…

Q: 5. (II) A falling rock has kinetic energy KE just before striking the ground and coming to rest.…

A: A falling particle is striking the ground and coming to rest, it is required to calculate the total…

Q: 29) A 10-A current flows through a wire for 2.0 min. (e=1.60 x 10-19 C) (a) How much charge has…

A: Given Current through the wire,I=10A Time, t=2 min=120s Charge of the electrons is find by the…

Q: 3. (II) Sketch a PV diagram of the following process: 2.5 L of ideal gas at atmospheric pressure is…

A: The first process of the cycle is a constant pressure process in which the temperature of the ideal…

Q: 11) As a proton moves in a direction perpendicular to the electric field lines A) it is moving from…

A: Given  Proton moves direction perpendicular to the electric field .  Electric potential for moving…

Q: 25) Which one of the following quantities is equivalent to 1 W? A) 1V/A B) 10.m C) 1A.s D) 1V.A E)…

A: Introduction: The electrical power is defined as the rate of electrical energy per unit time, and…

Q: 5) The electric field at point P due to a point charge Q a distance R away from P has magnitude E.…

A: Given : Electric field at point P due to a point charge Q , at a distance R away from P has…

Q: 13. (I) Determine the direction of B for each case in Fig. 20-53, where F represents the maximum…

A: Given, three cases in which direction of maximum magnetic force as well as direction of velocity on…

Q: 2) A negatively-charged plastic rod is brought close to (but does not touch) a neutral metal sphere…

A: The correct answer is option A The sphere is now positively charged

Q: 3) Two tiny beads are 25 cm apart with no other charges or fields present. Bead A carries 10 µC of…

A: Option A is the correct answer

Q: 21) When a current flows through a metal wire, the moving charges are A) both protons and electrons.…

A: According to the properties of the conductors, the conductors have high conductivity. It means that…

Q: 35) What is the equivalent resistance between points A and B of the network shown in the figure? A…

A:

Q: 12. (I) A widely used "short-wave” radio broadcast band is referred to as the 49-m band. What is the…

A: Given : λ = 49 m

Q: A rectangular coil, with corners labeled ABCD, has length L and width w. It is placed between the…

A:

Q: Two very small +3.00-uC charges are at the ends of a meter stick. Find the electric potential…

A: Given data:  Two very small charges Placed at ends of the meter stick  q = +3.00 μC = +3.00×10-6 C k…

Q: 10) Two long parallel wires separated by 7.5 cm each carry 3.3 A in opposite directions. (40 = 4 x…

A:

Q: A positive charge is moving to the right and experiences an upward magnetic force, as shown in the…

A: Force on charge particle in magnetic field F̅ = q(v̅×B̅)  direction of force can be determined using…

Q: 20) An ideal transformer has 60 turns on its primary coil and 300 turns on its secondary coil. If…

A: Given Data, Number of turns in primary coil (Np)=60 Number of turns in secondary coil(Ns)=300…

Q: Each plate of an ideal air-filled parallel-plate capacitor has an area of 0.0010 m², and the…

A: Given data:  Plate Area (A) = 0.0010 m2 Separation (d) = 0.050 mm = 0.050×10-3 m ε0 = 8.85×10-12…

Q: 4) A small charged plastic ball is vertically above another charged small ball in a frictionless…

A:

Q: (9) A conducting rod of length l= 25 cm is placed on a U-shaped metal wire that is connected to a…

A: Given  length(l)=0.25 m resistance (R)=8.0 ohms magnetic field (B)=0.40 T speed (v)=6.0 m/s Required…

Q: 1) A plastic rod is charged up by rubbing a wool cloth, and brought to an initially neutral metallic…

A: Here according to the steps given, we may say 1) The plastic rod is charged by rubbing a woolen…

Q: 30) Four unequal resistors are connected in a parallel with each other. Which one of the following…

A: in this question we use combination of resistors with parallel with each other.

Q: A flat coil having 40 turns, each one of cross-sectional area 12.0 cm², is oriented with its plane…

A:

Q: 6) If we double the resistance in a circuit but keep the current in it constant, the power…

A: Given data,  Final Resistance(R2)=2×Initial Resistance (R1) Final Current(I2)=Initial Current (I1)

Q: 19) The equipotential surfaces for two point charges are shown in the figure, with the value of…

A:

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.