Why are the rays that come from a cathode ray tube seen as light?

Q: A photon has a wavelength in a vacuum of 500nm, if its energy is doubled, what is the associated…

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Q: Charge in capacitor network • Two capacitor circuits are shown to the right with 3 capacitors in…

A: Let the voltage of the battery = V

Q: In the figure two large, thin metal plates are parallel and close to each other. On their inner…

A: The magnitude of the surface charge density is given as σ=5.34×10-22 C/m2

Q: Question A +3.00 mC charge and a -4.00 mC charge are fixed in position and separated by 5.00 m.…

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Q: A 287-kg crate is being pushed across a horizontal floor by a force P that makes an angle of 17.1°…

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Q: Using the component method of getting the resultant of vectors, find the resultant of the following…

A: Given value--- 8 N along the positive x-axis and 6 N making an angle of 45° with the x-axis. We…

Q: 33 Figure 24-34 shows a thin plas- tic rod of length L=20.0 cm and uniform positive charge Q = 33.2…

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Q: The fishing pole in the figure below makes an angle of 20.0° with the horizontal. What is the…

A: Given,  L = 1.80 m  F = 108 N at an angle 37.0° below the horizontal The fishing pole in the figure…

Q: What is the speed of a 6-kg ball with a momentum of 72 kg-m/s? O 12 m/s O 64 m/s 066 m/s 10 m/s

A: Given data : Momentum is represented by P Mass is represented by m   Required : Speed of ball

Q: As shown in the figure, the charge Q is midway between two other charges. If Q= -10nC, what must be…

A: Given: Q=-10 nC

Q: Potential of Concentric Spherical Insulator and Conductor 123456 A solid insulating sphere of radius…

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Q: 1. A centigrade and a Fahrenheit thermometer are both immersed in a fluid, and the numerical value…

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Q: Ex. 2. A car driver in northern Ontario makes the following displacements: Ad₁= 15.0 km [W 30.0°N]…

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Q: A sheet of aluminum with a rectangular shape is attached to a vertical support by a set of hinges.…

A: Given : Height (h) = 2.15 m Width (L) = 0.885 m Mass (m) = 20.5 kg

Q: What is the difference between "Contact" and "non-Contact" forces? Which is more dominant in our…

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Q: A certain force gives a 5.0 kg object an acceleration of 2.0 m/s2. The same force would give a 20 kg…

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Q: dielectric-filled parallel-plate capacitor has plate area AAA = 30.0 cm2cm2 , plate separation ddd =…

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Q: A particle starts from rest at x = -1.7 m and moves along the x-axis with the velocity history…

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Q: Problem 3. One of the predictions of the special theory of relativity is that the "rest mass energy"…

A: Einstein's mass-energy relation is given by E=mc2. It is the amount of energy stored in a matter of…

Q: A grinding wheel is in the form of a uniform solid disk of radius 7.07 cm and mass 1.98 kg. It…

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Q: The thin where u is the object distance from the lens, v is the may lens equation is V u image…

A: Given that, let we assume it is convex lens focal length f=6 cm  speed of object u=2 cm /sec…

Q: Vector A has a magnitude 6 units and is in the direction of +x-axis. Vector B has a magnitude 4…

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Q: no y-component. 1.56 Three horizontal ropes pull on a large stone stuck in the ground, producing the…

A: Given,

Q: A bird flies 80 m due East, 100 m NE, 110 m, 30°N of Wand 160 m, 20 ° S of W. Where is the bird?…

A: Given:-  A bird flies  AB = 80 m due East,  BC =100 m NE. CD=  110 m, 30°N of W DE = 160 m, 20 ° S…

Q: In the figure a solid sphere of radius a = 3.70 cm is concentric with a spherical conducting shell…

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Q: car is traveling at an unknown velocity. It accelerates constantly over 5.0s at a rate of…

A: GIVEN -     time (t)  = 5 sec     acceleration (a) = 3 m/s2     final velocity ( v ) = 30 m/s…

Q: Find the work done if force applied on crate to displace crate through 5 m is 21 N

A: Given value--- applied force = 21 N. distance = 5 m  We have to find--- work done?

Q: the angular diameter of an object is 15 arc seconds and it is 1.4 billion kilometers away, how big…

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Q: part 1 of 2 A cheetah can run at a maximum speed 102 km/h and a gazelle can run at a maximum speed…

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Q: The figure belows shows three components of an air-conditioning system, where T3 = 95°F and m3 = 1.5…

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Q: Can you find the charge and potential difference for each capacitor?

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Q: Given two particles with Q = 2.90-μC charges as shown in the figure below and a particle with charge…

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Q: In the game of tetherball, a 1.25-m rope connects a M = 0.850-kg ball to the top of a vertical pole…

A: Given value--- l = 1.25 m. M = 0.85 kg. angle = 37 degree. We have to find--- speed of ball ?

Q: The three concurrent forces acting on the screw eye produce a resultant force FR = 0. If F₂ = F₁ and…

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Q: A 14.0 [cm] long test tube is placed in a centrifuge, oriented at 30.0º with respect to the vertical…

A: A 14.0 [cm] long test tube is placed in a centrifuge, oriented at 30.0º with respect to the vertical…

Q: Two planets P₁ and P₂ orbit around a star S in circular orbits with speeds v₁ = 43.4 km/s, and v₂ =…

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Q: Vinitial (m/s) 0 (deg) You FIND 65.0 49.8 m/s 32.5 m/s 65 m/s 41.8 m/s 40.0 Show grid Show crossh…

A: Write the given values with the suitable variables. u=65 m/sθ=40° Here, u is the initial velocity…

Q: Explain why an air parcel cools at the wet adiabatic rate above the LCL.

A: Wet adiabatic rate: rate of temperature decline as altitude increases for an air parcel lifted at…

Q: The planet Mercury's surface temperature varies from 700 K during the day to 90 K at night. What are…

A: Given data: Temperature during day is 700 K, and Temperature during night is 90 K.

Q: You're travelling with friends in Cape Town and decide to explore the beautiful area of Hout Bay.…

A: Refraction is the phenomenon of bending of light at the surface of separation of two different…

Q: Find the work done if force applied of 10 N on object but object does not move

A: Given data : Force, F = 10 N Displacement, d = 0m  ( Since, the object is not moving)

Q: A concrete slab is 10.0 cm thick and has an area of 4.50 m². Electric heating coils are installed…

A: Given data: Thickness of the slab, L=10 cm=10×10-2 m=0.1 m Area of the slab, A=4.50 m2 Temperature…

Q: A closed system consists of 4 objects. The table below shows how much energy each object had to…

A: Given data: The initial energies of objects A, B, C, and D are, Ea=131 J, Eb=183 J, Ec=102 J, Ed=159…

Q: 1. The reading on a digital stopwatch is 0.76 seconds. a. If the manufacturer's specifications state…

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Q: A 20kg object moves in a horizontal plane. It experiences a resultant force of F = (−30i +24j)N At…

A: Given:-  The mass of an object m = 20 kg  The resultant force on an object is F =  (−30i +24j)N At…

Q: One of the largest Ferris wheels in the world stands over 32 stories high and holds more than 550…

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Q: A contestant in a winter games event pushes a 34.0 kg block of ice across a frozen lake as shown in…

A: Given:- The mass of the block is m = 34 kg. The Coefficient of the static friction force is μs= 0.1…

Q: I don't understand which answers are for what??? I need the speed flow at point 1 and the speed flow…

A: Given, Pressure at point 1, P1 = 1.09 ×105 Pa Pressure at point 2, P2 = 1.20 ×105 Pa The radius of…

Q: Schematization Draw a diagram of the object that interests us. Draw your x and y axes. Draw and…

A: Given:- Mass of your cousin: m = 30kg Walking speed u = 1.6m/s Coefficient of static friction:…

Q: Find the momentum if mass of object is 0.99 kg moving with velocity 1 m/s

A: Given data : Mass of object is represented by m Velocity of object is represented by V   Required :…

Rutherford's scattering experiment

Rutherford’s scattering experiment is also known as the gold foil experiment. This experiment disproved the plum pudding model of J.J. Thomson. In a gold foil experiment, high-energy alpha particles are made to strike a thin gold foil. The scattered alpha particles are detected using a detector. This experiment showed that the positive charge of the atom is at the center. Most of the atom’s mass is also confined to a small volume at the center. This region is known as the nucleus of the atom.