Calculate the index of refraction in a substance where the speed of light is 1.2x108m/s? The angle of incidence from air into a substance is 30°. The angle of refraction in the substance is 18°. What is the speed of light in the substance?

Q: For the given figure, the weight of the 9-ft bar is 5 lb. The moment of the tension in the cord…

A: Given: The weight of the bar is 5 lb. The length of the bar is 9 ft.

Q: collision occur whenever kinetic energy is not conserved, primarily when an object is increased…

A: In elastic collision kinetic energy is conserved but in an inelastic collision is kinetic energy is…

Q: If a radioactive element has diminished by 7/8 of its original amount in 30 seconds, what is its…

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Q: What is series parallel?

A: Answer:-  Series parallel:- An arrangement of cells or circuit elements in which groups of two or…

Q: Find the value of final speed of car Initial velocity=2.05 m/s acceleration=2 m/s2 time=2 s

A: Given: The intinal velocity is 2.05 m/s. The acceleration of the object is 2 m/s2. The time interval…

Q: For the given figure, the weight of the 12-ft bar is 5 lb. The moment of the tension in the cord…

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Q: 40 If two billiard balls collide on a billiard table, generally what type of collision is this?…

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Q: 1. Three resistors are connected in series with 27Q, 270 and 540 resistances respectively. If the…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Find the value of final speed of car Initial velocity=2.05 m/s acceleration=2 m/s2 time=2 s

A: Given : Initial velocity (vi) = 2.05 m/s Acceleration (a) = 2 m/s2 Time (t) = 2 s

Q: Energy is directly proportional with frequency and wavelength   False   True   It depends

A: Energy is directly proportional with frequency and wavelength

Q: Practicel: As shown below, If D = A + B+C What is the magnitude and direction of D wiuh respect to…

A: “Since you have asked multiple question, we will solve the first question for you. If youbwant any…

Q: a = 2m/s?for 4 seconds. During these 4 seconds, how far has the car traveled? 48 m 56 m 44 m O 65 m

A: Given value--- initial velocity = 10 m/s . acceleration = 2 m/s . time = 4 s . We have to find---…

Q: Given the figure below, the weight of the bar is 5 lb and its total length is 12 ft. The moment in…

A: Given: The total length of the bar is 12 ft. The weight of the bar is 5 lb.

Q: When a 30-N force, parallel to the incline and directed up the incline, is applied to a block on a…

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Q: Determine the direction of the force of the proton. I'll upvote if complete and typewritten.

A: Formula for magnetic force is given by,              F = q(v×B)     ---(1) where,             q -…

Q: A hollow spherical shell has a mass of 8.05 kg and a radius of 0.220 m. It is initially at rest and…

A: We have a spherical shell of mass m=8.05 kg and radius r=0.220 m which is initially at rest (initial…

Q: The charge of a 91 µF capacitor is 1.82 mC. Find the potential difference to which capacitor was…

A: The charge of a 91 µF capacitor is 1.82 mC. Find the potential difference to which capacitor was…

Q: 2. A source of sound having a frequency of 300 Hz is moving at 25 m/s. If the speed of sound in air…

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Q: An object is moving to the right with a constant acceleration pointing to the left. The velocity of…

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Q: When a 30-N force, parallel to the incline and directed up the incline, is applied to a block on a…

A:

Q: Photoelectric effect is s the emission of electrons when electromagnetic radiation, such as light,…

A: In a photoelectric effect, when electromagnetic radiation (light) strikes the surface of the…

Q: Find the direction of the current in the wire as shown in the figure that would produce a magnetic…

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Q: How much time does it take to lift 500 kg

A: Given; height,h=50 mDevelops power,P=65 kWTime taken to lift the weight to a height of 50 m is ?

Q: Kathrine places a 6.95-cm tall candle a distance of 36.5 cm from a concave mirror. What is the…

A: Given, Height of image , Hi = 6.95 cm Image distance , u = -36.5 cm Focal length of image , f =-…

Q: Look at the image below. 120 N 30° 20.0 m As depicted in the image, a person mowing a lawn exerts a…

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Q: A 15A current flows though South through a 2m wire with a magnetic field of 10T directed into the…

A: The current flowing through the conductor, i=15 A The length of the wire, l= 2 m Magnetic field, B…

Q: 2. What is the width of a single slit through which 510-nm orange light passes to form a first…

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Q: 3C. A 100-N block on a rough 300-incline is acted upon by a force P as shown causing it to…

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Q: What is the current flowing into the 1-ohm resistor? 3.00 Ω 18.0 V 4.00 N -2.00 N 1.00 N

A: The total current drawn from the battery by the circuit is i=VReq, where Req is the equivalent…

Q: Suppose sound waves produced by a microphone are detected by a speaker as shown in the image below.…

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Q: Given that the material is a silver where = 61.7 x 106 S/m. Assume that same current crosses both…

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Q: A positive point charge q = 6µC is surrounded by a sphere with radius of 0.30 m centered on the…

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Q: A flute is designed so that it plays a frequency of 261.6 Hz, middle C, when all the holes are…

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Q: 2B. Blocks A and B are connected by a cable that passes over a frictionless pulley as shown. If the…

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Q: Find the value of distance covered by car in 5 s if speed of car is 20 m/s

A: Given  Time  = 5 s Speed = 20 m/s Distance = ? We know  formula,  Speed = distance / time

Q: A bat is using echolocation to find insects at night. If the bat emits a high frequency chirp and…

A: Given, The bat emits a high frequency chirp and hears an echo 0.031 s later. Temperature of air is…

Q: a. The Blue Origin's Rocket is flying at a speed of 500 m/s for 10 seconds. What is the distance…

A: a) Given Speed of blue origin's rocket v = 500 m/s Time  t = 10 s To find distance travelled by the…

Q: Find the value of force applied if work done is 280 J and displacement is 20 m

A: Given data :                       Work done   =    W                      Displacement    =    d…

Q: Find the gravitational potential energy of a light that a mass of 3 kg and is 5 m above the ground.

A: Given data:  Mass (m) = 3 kg Height (h) = 5 m, above the ground  Required: The gravitational…

Q: Protons in an accelerator at the Fermi National Laboratory near Chicago are accelerated to a total…

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Q: Find the gravitational potential energy of a light that a mass of 3 kg and is 5 m above the ground.

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Q: : A semi-infinite rod x>0 is initially at temperature zero. At time t> 0, a constant temperature V,…

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Q: An escalator is used to move 20 passengers every minute from the first floor of a department store…

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Q: 8. メX x メx x >く Xx メ

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Q: The dielectric materials used for region A, B, and C are air (e =1), mylar (e =3.2), and teflon (e…

A: we have Capacitance = ε0εrAreaseparation

Q: Ricky moves a wagon a distance of 36 meters by pulling the handle with a force of 120 Newtons. If…

A: Given: Force (F) = 120 N  Distance (d) = 36 m  Work done = 2200 J

Q: Calculate the value of work done Force applied on crate3D20 N Distance moved by crate=2.02 m

A: Given data : Force applied on crate=F Distance moved by crate=d   Required : Work done

Q: can you answer d please? (d) Draw the velocity vectors,  and the resultant velocity vector at this…

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Q: Find the velocity and acceleration vectors in terms of u, and ug. de r= a sin 40 and 2t, where a is…

A: Formula

Q: - The given system of knotted cords (label the left knot as J and the right knot as K) supports the…

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Applications Of Reflection Of Light

When a light ray (termed as the incident ray) hits a surface and bounces back (forms a reflected ray), the process of reflection of light has taken place.

Sign Convention for Mirrors

A mirror is made of glass that is coated with a metal amalgam on one side due to which the light ray incident on the surface undergoes reflection and not refraction.