What is the minimum amount of energy required to completely melt a 6.72 kg lead brick which has a starting temperature of 24.7°C? The melting point of lead is 328°C. The specific heat capacity of lead is 128 J/(kg-C); and its latent heat of fusion is 2.32×10 J/kg. O 417 K O 261 kJ O 105 kJ O 156 kJ

Q: A neutron at rest decays (breaks up) to a proton and an electron. Energy is released in the decay…

A: This problem can be solved using conservation of energy concept.

Q: In the figure below, the switches S, and S, are closed simultaneously at t = 0 and a current starts…

A:

Q: 2. A playground is on the flat roof of a city school, 6.00 m above the street below. The vertical…

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Q: Question 8 If an electron is emitted from a photoelectric surface of a photoelectric cell with…

A: Given kinetic energy of emitted electron is Kmax=8.5 eV

Q: What is the magnitude of the total magnetic force the long wire exerts on the current loop? a. Zcro…

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Q: Question(s): The physics of a bike generator. A generator is mounted on a bicycle to power a…

A: Given Data:Radius of tire Area Magnetic field EMF To Determine:The linear speed of the bike.

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A: We need to say what the direction of friction will be on the coin on turntable.

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A: Given, Electrical energy is converted into thermal energy in a resistor at the rate of 5 watts per…

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A:

Q: If you double the speed of a particle, how does it deBroglie wavelength change? OPTIONS A(2) = 2…

A: According to De Broglie wavelength,λ=hmv.......(1)where,λ is the wavelength of particle m is the…

Q: 13. A very big truck collides with a small sports car. which experiences the greater acceleration?…

A: given:- a very big truck collides with a small sports car .

Q: Pre-Lab Question #3: Now you can finish the calculation as follows (include units): |Fo| = V35.22…

A: Given data: -  The net force is Fnet=35.2x^+76.5y^. The x component of the net force is Fx = 35.2…

Q: Mickey, a daredevil mouse of mass 0.0189 kg, is attempting to become the world's first "mouse…

A: Given: In this question, the given details are, Mickey, a daredevil mouse of mass 0.0189 kg, is…

Q: 3. Refer to the figure below. What is the magnitude and direction of electric field at point Y from…

A: 3) Draw the schematic diagram of the system.

Q: . Two marbles with masses, MA = 50g and MB = 20 g, collide on a frictionless surface. Marble A is…

A: Given, Masses of two marbles, MA=50gMB=20g The velocity of marble A is, vA=0.35m/s The velocity of…

Q: 8. Junction

A: The problem is based on the basic concept of current electricity. In an electric circuit, we use…

Q: A Cu rod 80.0cm long is at a temp. of 50.0°C. What is its length at -20.0°C? The coefficient of…

A: Given:-length of rod (L0)=80.0 cminitial temprature (Ti)=50.0°Cfinal temprature=(Tf)=-20.0°Clinear…

Q: An elec Compute the electric potentials at points a, b and c. charges, q1 =+12 nC and q2 =-12 nC…

A: Given: The value of point charge q1 is 12 nC or 12×10-9 C.            The value of another point…

Q: 6. A 60 mL flask is filled with mercury at 00C. When the temperature rises to 800C, 1.47 g of…

A: Volume of flask: V = 60 mL = 60 x 10-6 m3 Initial temperature of mercury: TI = 0oC Final temperature…

Q: A student examining a flashlight observes that it uses a traditional incandescent light bulb. The…

A: We know, P=VII=PV

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Q: 9. Convert 3.14 rad into degree. OA. 180 OB. 45 O C. 60 OD. 30

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Q: Consider the semiare of charge shown in the figure, that has an opening angle of 0o = 47° and a…

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Q: A roller coaster (356 kg) moves from A (5.58 m above the ground) to B (21.3 m above the ground). Two…

A: Write the work-energy theorem and rearrange the equation.

Q: The expanding gases that leave the muzzle of a rifle also contribute to the recoil. A.30 caliber…

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A: Given: In this question, the given details are, A 19th century lab technician is testing possible…

Q: P-400 20018 30

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Q: A frisbee is thrown with a velocity of 20m/s. How long will it take the frisbee to strike a target…

A: Given data:  Velocity (v) = 20 m/s Distance (d) = 84 m Required: The time (t)

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Q: onconservative pushing force does 58.0 J of work. How much work is done by the pushing force when…

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Q: A 50 eV electron is. trapped between electrostatic walls 200 eV high. How far does its wave function…

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Q: Consider a sound wave moving through the air modeled with the equation s(x, t) = 3.00 nm cos(55.00…

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Q: 1.Three point charges are arranged as shown in figure. Find the magnitude and directic of the…

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Q: 4 6. 7 8. You are on the right side of a sled, pulling it to the right with 150 N of force. A friend…

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Q: A piano tuner hears a beat every 1.90 s when listening to a 260.0 Hz tuning fork and a single piano…

A: Solution: Given: T = time period of beats = 1.90 s f = frequency of tuning fork = 260.0 Hz f1 =…

Calorimetry

Measuring the heat transferred during chemical reactions or other physical processes is known as calorimetry. It comes under the branch of thermochemistry.