What wavelength in nanometers is the peak intensity of the light coming from a star whose surface temperature is 8888 Kelvin? Calculate total energy radiated ner unit area by a black body at this temperature

Q: What is the electrostatic force of repulsion between 2 positively charged particles separated by…

A: we have for electrostatic force F=kq1q2r2

Q: If the horizontal component of a projectile's initial velocity is 5 m/s, after 4 seconds it will be:

A: In projectile motion horizontal component of velocity don't have acceleration so from equation of…

Q: A current of 5.5 A flows through a conductor for 7.6 s. What amount of charge passes through the…

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Q: Two pistons of a hydraulic lift have a radius of 5 cm and 11.5 cm respectively. If the input force…

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Q: You move a 50-kg crate by pushing it with a 120N force at an angle of 42 degrees above the…

A: Given: The mass of the crate is 50 kg. The applied force is 120 N. The angle of the applied force…

Q: Diamond is a solid form of the element carbon with its atoms arranged in a crystal structure. If a…

A: Dear student The angle of refraction must me 90 degree for total internal refraction to occur. Also…

Q: (COLLAB) A new design of Saturn 12 rocket with mass 1.72 x106 kg has a propulsion engine that can…

A: Given:-  The mass of the rocket is m =  1.72 x106 kg The ejection speed of the gas is  vf = 390.04…

Q: a) If the mass lost in a nuclear fission reaction is 15 grams, how much energy is released? b) An…

A:

Q: A Lightning McQueen toy car with a 10 cm height is placed 30 cm in front of a concave mirror. The…

A: object height = 10 cm object distance = 30 cm focal length = 20 cm

Q: Find speed

A: Given data : Time=t Distance=d   Required : Speed

Q: Two sedans travel along the same road in opposite directions. The BMW car traveling north has a…

A: Correct option is (b) 3000kg.m/s straight south .

Q: Five charges are arranged as shown to the right. q1, q2, q3, and q4 each have a charge of -3.00 μC…

A: Let q1 and q2 be the two charges separated by a distance, r, then the force of attraction or…

Q: Noel is playing on a swing and has a weight of 60.0Newtons. Approximately, what is his maximum speed…

A: weight = 60 N initial height = 0.5 m final height = 3 m

Q: Find the impulse Force=12.22 N Time-3.21 s

A: Given data : Time=t Force=F   Required : Impulse

Q: A medium disk is moving initially with a rotational speed of 30 rads per second and a final…

A: Given value--- initial angular speed = 30 rad/s. final angular speed = 80 rad/s. linear…

Q: Hinata throws a 0.3-kg volleyball at the wall. With a velocity of 3.2 m/s, the volleyball hits the…

A: Given in question - Mass of the volleyball (m) = 0.3 Kg                                   Initial…

Q: A.)By pulling a on rope attached to a crate of mass 73.0 kg, the crate is dragged across a floor.…

A: Draw the free-body diagram of the crate.

Q: at a coordinate at (4.5meters, 0). Find the electric field at origin (0,0) A 10 N/C, 37 degrees…

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Q: A particle move along the fixed path described by 16y=x² where x and y are in incnes. At any time t,…

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Q: The hydraulic lift’s small piston with an area of 30 m^2 is subjected to a force of 100 N. To have…

A:

Q: Hinata throws a 0.3-kg volleyball at the wall. With a velocity of 3.2 m/s, the volleyball hits the…

A: mass of volleyball (m) = 0.3 kg Initial velocity (u) = 3.2  msFinal velocity (v) = - 2.1 ms

Q: A 68.5-kg astronaut is doing a repair in space on the orbiting space station. She throws a 2.25-kg…

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Q: Which of the following statements is/are correct? i. If a non zero net force acts in an object, it…

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Q: Diamond is a solid form of the element carbon with its atoms arranged in a crystal structure. If a…

A: For refraction ndiamondsinθdiamond=nairsinθair

Q: Consider an equilateral triangle 123 having each side length equal to 0.2 m. Let the uniform point…

A:

Q: Given data: Time Force 28 N Find the Impulse = 14 s II

A: Given data :                         Force     =     F                         Time      =     t…

Q: A cart X with a mass of 4 kilogram is initially moving at 5 meters per second. It collided with cart…

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Q: A coil 4.35 cm radius, containing 460 turns, is placed in a uniform magnetic field that varies with…

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Q: Two sedans travel along the same road in opposite directions. The BMW car traveling north has a…

A:

Q: Find distance covered by car Speed=23.5 km/hr Time=2 hr

A: Given data : Time=t Speed=S   Required : Distance

Q: Suppose you move a 15-kg crate by pulling upward on the chain at an angle of 45 degrees above the…

A:

Q: Noel is playing on a swing and has a weight of 60.0Newtons. Approximately, what is his maximum speed…

A: Given: Weight (W) = 60N            Initial height (h1) = 0.50 m            Final height (h2)  =…

Q: Some cats can be trained to jump from one location to another and perform other tricks. Kit the cat…

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Q: Find the Resultant of the following Forces by Component Method.   F₁ = 12 N. West   F₂= 24 N,…

A: Free body diagram gives whole idea of the forces acting. Force brings about motion and changes in…

Q: A medium disk is moving initially with a rotational speed of 30 rads per second and a final…

A: Given: The initial angular speed is 30 rad/s. The final angular speed is 80 rad/s. The acceleration…

Q: Most objects tend to expand when heated. Which of the following statements is true? At higher…

A: Answer:- At higher temperatures objects have higher kinetic energies so their their particles…

Q: a) One ton of TNT releases 4.18 gigajoules of energy. The metric prefix giga means billion. How much…

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Q: Consider an equilateral triangle 123 having each side length equal to 0.2 m. Let the uniform point…

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Q: An electron experiences a force of 2.5x10-10 N [down] exerted on it upon entering a magnetic field…

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Q: A 30.0 kg child sits on one end of a long uniform beam having a mass of 20.0 kg, and a 40.0 kg child…

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Q: What is the equivalent resistance of the combination of resistors shown below: R₂ = = 3.51 R₂=2.5 un…

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Q: PS- UCM Horizontal m1 = 0.25 kg O m2 = 0.75 kg Mass 1 and mass 2 are connected to the opposite ends…

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Q: A golfer plays a terrible shot, and slices the ball. The ball travelled at a velocity of 44.6 ms^-1,…

A: Given: Velocity of the ball v = 44.6 m/s Mass of the ball m' = 45 gm = 0.045 kg Radius of the ball r…

Q: What is the equivalent resistance of the combination of resistors shown below: R₂ = 2.5 R₂=3.5/2 un…

A:

Q: A piece of aluminum whose mass is 10 kg has a specific heat capacity of 900 J/kg×°C and is warmed by…

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Q: A cart X with a mass of 4 kilogram is initially moving at 5 meters per second. It collided with cart…

A:

Q: Explain how nuclear fusion is responsible for heating the Earth

A: There are two types of nuclear reaction. Nuclear fusion and Nuclear fission . Fusion reaction…

Q: Ben threw a ball straight upwards with initial velocity of 14.5 meter per second. Disregarding air…

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Q: At 0 C the density of mercury is 13.595 x 10^3 kg/m^3. What is the height of the mercury column in a…

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Q: Two resistors are connected in parallel as shown in the figure. What is the value of Rand IT? + VT =…

A: Here, the resistors are connected in parallel. We need to find the equivalent resistance of the…

Wien's displacement law

Students often get confused between Wien's displacement law and Planck's radiation law. Although both are historically related, yet they are conceptually different. Planck's law helps determine the spectrum of a blackbody, while Wien's law determines the relationship between peak wavelength and temperature.