Using a fast-pulsed laser and electronic timing circuitry, you find that light travels 2.50 m within a plastic rod in 11.5 ns. What is the refractive index of the plastic?

Q: A small 2.0 kg block moves in a horizontal circular trajectory at constant speed. The block is…

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Q: A wire having a mass per unit length of 1.5 g/cm carries a current of 15 A to the east. What are the…

A: The given values are, mL=1.5 g/cm=1.5 g/cm10-3 kg1 g1 cm10-2 m=0.15 kg/mI=15 A

Q: A physics teacher pushes a 80kg environmental science teacher out a helicopter without a parachute…

A: By fbd of teacher  mg - Fdrag = ma  a = [(80×9.81) - 169]/80 a = 7.7 m/s2    At terminal speed net…

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--- length = 1.25 m. M = 0.850 kg. angle = 37 degree . We have to find--- speed of…

Q: Near the middle of the term, Avi and Cameron are taking their laboratory exam. The instructor has…

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Q: Three people pull simultaneously on a stubborn donkey. Jack pulls directly ahead of the donkey with…

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Q: Find the position function r(t) from the given velocity function r'(t) = 4ti + (3t2 – 1)j, r(1) =…

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Q: A bicyclist starts from rest and begins riding down the street. After her wheels have rotated…

A: Given DataInitial angular velocity ωi = 0 rad/s   (as bicyclist start from rest)Angle rotated in one…

Q: F = 20 N uk = 0.1 O = 45° %3D M1 = 7 kg

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Q: General Questions: A girl attaches a rock to a string, which she then swings counter-clockwise in a…

A: From the figure it is clear that rock is moving in a horizontal circleSince the rock is moving in a…

Q: koibok slides down a 3 m lông 30 degree incline and then transilions to a flat iictiontess fHce Thể…

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Q: sider a rod that is 0.260 cm in diameter and 1.40 m with a mass of 0.0500 kg. Find the moment of…

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Q: thank

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Q: A refrigerator has a coefficient of performance equal to 4.00. The refrigerator takes in 145 J of…

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Q: Part A How much work is done by each of the three forces? Express your answers using three…

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Q: An airplane releases a ball as it flies parallel to the ground at a height of h = 195 m as shown in…

A: Solution:Given:h = height of the plane above ground = 195 mR = horizontal range of the ball = h =…

Q: i. The test charge is +3 Coulombs and is 5 meters away from the source charge. i. The test charge is…

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

Q: Suppose there is a planet that has a uniformly massively charged Iron core with average charge…

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Q: A 10.0 kg block sliding on a frictionless horizontal surface at 7.00 m/s hits a spring that is…

A: Note: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question…

Q: gravity (CG), which is at the 50 cm mark. TI ck hanging from the 80 cm mark. Decide wl ther blocks…

A: Given:- The meterstick shown is L = 100 cm  it  is free to pivot around its center of gravity ( CG )…

Q: A particle of mass 25 kg, originally at rest, is subjected to a force of 50 N for 10 seconds. Find…

A: For Distance calculation we need to apply second equation of motion.The time is given, initial…

Q: Maximum Voltage on an Isolated Sphere: A large Van de Graff generator has a top electrode that can…

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Q: A block of mass m is at rest on an inclined plane that can be set at any angle between 0° and 90°.…

A: Given:-  The mass of the block is m at rest on an inclined plane.  The angle of inclination is…

Q: A give person has a near point of 0.45 m and a far point of 6.35 m. Imagine that this person comes…

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Q: A horizontal tension force pulls to the right on block A. Block A slides to the right on a…

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Q: 21. An ideal spring with k = 6 N/m is initially compressed 0.40 m. One end is attached to a wall and…

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Q: Two unequal charges repel each other with a force F. Part A If both charges are tripled in…

A: Write the expression for the electric force between two charges. F=kq1q2d2 Here, k is Coulomb's law…

Q: 2. Brenda drives along a straight road at a constant speed of 30.0 m/s. She passes a parked…

A: Given Information: The velocity of Brenda (vb) = 30 m/s The acceleration of the officer (a) = 4 m/s2…

Q: Use the position versus time graph to answer the question. What distance does the object travel from…

A: Required ; To find the distance travelled by the object from time t = 0 to t = 3.

Q: Answer Step-wise with detailed explantions Please Answer the following question step-wise with…

A: To solve this problem we use Newton's laws of motion

Q: Now consider the following nuclear reaction: 239 Pu + He 1 242 Cm + 6 96 94

A: Given that: P94239u+H24e→C96242m+n01 M(P94239u)=239.5022 uM(H24e)=4.00260 uM(C96242m)=242.0588…

Q: Use the definition of scalar product, a ab cos 0, and the fact that a b = axbx + ab + a₂b₂ to…

A: Vectors as and Find:Angle between and

Q: 2. A stack of bricks with mass m=200 kg is sitting on a frictionless ramp, connected to a rope as…

A: Given that:- Mass of the stack of bricks=m=200kg

Q: An object moves from point A to point B along the trajectory shown, one quarter of a circle. The…

A: An object moves from point A to point B along the trajectory shown, one quarter of a circle. The…

Q: RADIO PARALLEL CIRCUIT V₂ = 9 V R₂ = 60 0 I, = 0.15 A 9 V V₂ = R₂ = 10 02 1₂2=0.9► A CONFIRM V₁= 9 V…

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Q: Problem 8: A rod of m = 0.19 kg and L= 0.55 m is on a ramp of two parallel rails with angle 0 = 16°…

A: Solution:-Given thatmass of rod (m)=0.19 kglength of rod (L)=0.55 mθ=16°Current on the rod(I)=0.075…

Q: A farmer builds three sections of a fence, as shown in the figure, where L = 20.00 m, and gets…

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Q: The combined electrical resistance R of two resistors R, and R, connected in parallel, is given by…

A: Write the given values with the suitable variables. dR1dt=0.6 ohm/sdR2dt=1.8 ohm/sR1=28 ohmR2=71 ohm

Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.