calculate the momentum of a photon having a wavelength of 100nm. Also, find the velocity and kinetic energy of an electron having the same momentum and hence compare it with the energy of the photon.

Q: Give two example equations for both speed and velocity.

A: Give two example equations for both speed and velocity.

Q: 1. A body is thrown vertically upward with an initial velocity of 9m/s. Assuming that it falls…

A: Applying first equation of motion V= U-gt. Here V is final speed U is initial V= 9-9.8×2.5 V= -15.5…

Q: 1. A wire that is 6.0 m long at 30  Celsius is found to increase in length by 2.25 cm when heated to…

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Q: Viscosity coefficient (n) of-3 fluid defines the . . between shear stress and rate .of change shear…

A: The relation between shear stress and shear strain rate depends on the fluid. Most common fluids…

Q: Charges of +2q, +q, and -q are distributed in an area as shown above. Consider a Gaussian surface…

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Q: 1- Water enters the house through the hose of the inner radius of ( 4 cm ) and Velocity (300 cm/s )…

A: Write the given values with the suitable variables. r1=4 cmv1=300 cm/sv2=400 cm/s Here, r1, v1, and…

Q: A step up transformer has 79 turns in the primary coil and 425 turns in secondary coil. The primary…

A: Given, Number of turns in the primary coil=79turns Number of coil in the secondary coil=425turns…

Q: ocean wave has a wavelength of 20.0 m. A wave passes a fixed location every 2.00 s. What is the…

A: Given value--- wavelength =20 m. Time period = 2 sec  We have to find--- wave speed?

Q: Whale and Kanmuro are two islands located at the Chimera archipelago. These two are separated by a…

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Q: What will be the total time to cover 3600 m at 2 meter per seconds?

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Q: A 400-N body starts up the incline of 30o with the horizontal (fk = 0.2) with a velocity of 3m/s.…

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Q: What is the total current in the circuit? [ 1.0 mA = 1.0 x 10^-3 A] R2 = 2000 n R, = 2500 0 %3D R3 =…

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Q: A converging lens of focal length fi is placed beside another converging lens of focal length f2,…

A: The focal length of the first lens, f1= 5 cm The focal length of the second lens, f2=15 cm The…

Q: A jeepney is moving west at 25m/s when the driver steps on the brakes and brings the jeep to a stop…

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Q: A particle is moving along a line with velocity given by the function v(t) = t=1 tanh(In t)[sech(In…

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Q: A balloon has 15 million electrons and 13 million protons. What is the net charge of the balloon?…

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Q: Determine the object's distance from the biconvex lens if the image's magnification is -2 and the…

A: magnification (m) = - 2image distance (di) = 17 cm

Q: The figure here shows three cylindrical copper conductors along with their face areas and lengths.…

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Q: Suppose that liquid mercury and glass both had the same coefficient of volume expansion. Would a…

A: An ordinary mercury-in-glass thermometer works on the following principle. When the thermometer is…

Q: A cheetah starts from rest, accelerates to its maximum speed (we'll assume the acceleration is…

A: We have a cheetah that starts from rest (initial velocity u=0) and the accelerates with a constant…

Q: Give a word problem for the Newton's 1st, 2nd and 3rd law of motion

A: Give a word problem for the Newton's 1st, 2nd and 3rd law of motion.

Q: A piece of steel is 11.5 cm long at 22°C. It is heated to 1221°C, close to its melting temperature.…

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Q: How much current does a long wire carry if it produces a magnetic field of magnitude 3.4 microteslas…

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Q: What is the equivalent resistance for the resistors in the diagram? 10.0 2 6.0 2 2.0 2 4.0 0 13.0 W…

A: The circuit diagram is shown below.

Q: NEGATIVE charge moving with a constant velocity of magnitude v enters a region of a uniform magnetic…

A: Right Hand Rule :  Definition :-  According to this rule,  if when a charged particle is moving in…

Q: Mr. Haradem pitches a 0.20 kg baseball with a speed of 40.0 m/s and then Ms. Lamb batted to the ball…

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Q: 1-Continuity Equation applied when a fluid flows in an tube. ....... ...** Your answer

A: Continuity equation is written as A1v1=A2v2 where A is the area and v is the velocity of the fluid…

Q: A metal ring is rolling without sliding inside a uniform magnetic field. Induced emf between points…

A: Write the given values with the suitable variables. B→=1 Tv0=2 m/sR=1 m Here, B→, v0, and R are the…

Q: Find the total current in the circuit. R1 = 20 ohms %3D R2 = 27 ohms R3 = 9 ohms -12 V R1 R2 R3…

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Q: The wavelength of this longitudinal wave is m, if the length of the slinky is 1.6 m. 600000…

A: Crest A crest point on a wave is the maximum value of upward displacement within a cycle. A crest is…

Q: Leigh is doing a knee extension exercise using a 100 N weight strapped to her ankle 40 cm from her…

A: Given, Force=100N Distance=40cm

Q: A refrigerator has a coefficient of performance of 4. If the refrigerator absorbs 30 cal of heat…

A: Given: Coefficient of performance, COP=4 Heat absorbed, Qc=30 cal To find: Heat expelled, Qh=?

Q: As shown in the figure, a layer of water (n=1.333) covers a slab made of glass (n=1.523) which is on…

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Q: 2. A peso has a diameter of 1.9000 cm at 20.0°C. The coin is made of a metal alloy (mostly linear…

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Q: 17. Initial velocity = 5ms-', final velocity = 36 km h-', acceleration = 14 ms-2. Find the distance.…

A: Given: The initial velocity: u = 5 ms-1. The final velocity: v = 36 kmh-1 = 36×10003600 ms-1 = 10…

Q: Part A Silver has a Fermi energy of 5.48 eV. Calculate the electron contribution to the molar heat…

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Q: why did you add instead of subtract in the cosine law?    follow up question to:  Kristopher…

A: In the given solution, the absolute angle 1250 is considered when we calculated the relative…

Q: What is the maximum efficiency of a heat engine that operates between a high thermal reservoir at…

A: The maximum effeciency of the heat engine working between source temperature T1 and drain…

Q: 20. Distance = 132 m, time taken = 12 s, acceleration = -1ms-2. Find the final velocity. a) 4m/s b)…

A: Given: distance (s )= 132m            time taken (t) = 12 secs            acceleration (a) = -1m/s2…

Q: A combination of three resistors R1, R2 and R3 in series is connected across a voltage source Vr.…

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Q: A capacitor has an intial charge 8.3 Coul. If the current flows through it is given by the equation…

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Q: Three charges are arranged as shown. What is the magnitude and direction of th resultant force…

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Q: What will be the total time to cover 3600 m at 2 meter per seconds?

A: Given Data:- Total distance is d=3600 s Speed is v=2 m/s Required:- Time to cover the distance.

Q: Write a computer program to model the motion of a spacecraft of mass 150000 kg that is launched from…

A: We have to write a computer program to model the motion of a spacecraft of mass 15000kg Initial…

Q: The Achilles’ tendon inserts on the calcaneus (the heel bone) at a distance of 8 cm from the axis of…

A: We have to apply torque concept here. Torque=radius×force

Q: Give two word problems each for speed and velocity

A: Give two word problems each for speed and velocity

Q: 10 ms' D. 2 m 5 m Figure I The kinetic energy of the cart as it moves along AB. The speed of the…

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Q: A monochromatic light source emits electromagnetic radiation uniformly in all directions (isotropic…

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Q: 6. Final velocity = 27 ms-1, acceleration = 8 ms-2, time taken = 2 s. Find the initial velocity. %3D…

A: Given Final velocity is given as vf=27 m s-1 Acceleration is a=8 m s-2 Time taken is t=2 s   We…

Blackbody

Q.5 A blackbody radiates how much energy when the temperature of the body is elevated?