When a young girl looks in a 6.0-cm radius, spherical Christmas tree ornament, she sees an imag How close is her face to the ornament? O a. 8.0 cm O b.5.0 cm O c. 6.0 cm

Q: vertical velocity Vy of the ball at Point A is 6 m/s and the horizontal velocity is 3 m/s. А B What…

A: Given value--- at point A vertical velocity = 6 m/s. horizontal velocity = 3 m/s. We have to…

Q: 1. Holding a long rope by its upper end, you lower it onto a scale. The rope has a mass of 0.13 kg…

A: Given that,  Mass/meter , m = 0.13 kg/m  and Speed , v = 1.4 m/s  (a)  Mass per unit time, ΔM/Δt = m…

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Q: Please answer the following question(s): 1. A 99 kg person and their 9 kg dog are 5.8 m away from…

A: Given value--- mass of person m1 = 99 kg. mass of dog m2 = 9 kg. distance between them r = 5.8 m.…

Q: Which of the following statements about lasers is correct? Choose all that apply   Question 18…

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Q: Explain in details about the device lasers by: a) Mention the abreviation of the device if it…

A: It is required to explain the laser device by the abbreviation of the device the main principle of…

Q: An X-ray beam of wavelength 8.9 × 10-10 m makes an angle of 29° with a set of planes in a crystal…

A: Wavelength of X-ray beam , λ = 8.9 × 10-10 m  Angle ,θ= 29 °  By using Bragg's Law ,  The plane…

Q: What's final answer 1/2 or 1/4. I'm confu

A: Given, a picture that is 4 inches by 6 inches  a space that is 2 inches by 3 inches The scale factor…

Q: Calculate the drift velocity in a semiconductor if the current density is 66.11x109 MS Note: (o=61.7…

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Q: Which of the variables—inertia, mass, kinetic energy, and internal energy—are invariant, and which…

A: Given options are , Inertia Mass Kinetic energy Internal energy

Q: A 70.0-g bullet moving at a 345.0 m/s passes through a 5.30 cm thick sheet of foam plastic and…

A: Given,  Mass of bullet = 70g Initial speed = 345 m/s Final speed = 80m/s Thickness of sheet = 5.3cm…

Q: A rocket burns in 2 stages. In stage 1, .35mo is burned. It then releases the first stage tank (of…

A: Given  A rocket burns in 2 stages. In stage  1 mass burned m1 = 0.35 mo  Then releases the first…

Q: The angular speed of a wheel decreases uniformly from 34.0 rad/s to 2.0 rad/s in 18.0 s. A. Find the…

A: Given data:  Initial angular velocity (ω0) = 34.0 rad/s Final angular velocity (ω) = 2.0 rad/s Time…

Q: A large power reactor that has been in operation for some months is turned off, but residual…

A: Given value--- Power = 150 NW. average energy per decay = 0.96 MeV. We have to find--- what is…

Q: . Point charges 2μC and 3 μC are placed in a medium of dielectric onstant 80 at a distance 3 cm…

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Q: Consider the Bohr model as applied to the following three atoms: (A) neutral hydrogen in the state n…

A: Three atoms are given here: neutral hydrogen in the state n=2, singly ionized helium in the state…

Q: Figure shows two uniform charged concentric spherical shell. Both charges are positive. Select…

A: We are given 2 concentric circles. We are given charges on them. We apply Gauss theorem to field…

Q: Three uniform metersticks, each of mass m, are placed on the floor as follows: stick 1 lies along…

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Q: A 40-cm-long conducting rod moves to the right with a velocity of 12 m/s along frictionless metal…

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Q: 2 Find the velocity and acceleration functions. V(E)= 36²-19E MU

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Q: A 0.825kg block is attached to a spring which has a spring constant of 535 newtons per meter. The…

A: Given data:  Mass (m) = 0.825 kg Spring constant (k) = 535 N/m Required: Period (T)

Q: 45. Find the x coordinate of the center of mass of the bricks shown in Figure 9–17.. IN L FIGURE…

A: The solution for this question has been given below..

Q: 1.Force A has a magnitude F and acts for the time ▲t , force B has a magnitude 2F and acts for the…

A: Given data:  Four forces A, B, C and D acting for different times Required: Ranking of forces in…

Q: A 285-g ball falls vertically downward, hitting the floor with a speed of 2.5 m/s and rebounding…

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Q: The three air carts shown in Figure 9–27 have masses, reading from left to right, of m, 2m, and 4m,…

A: Given data- The three air carts have masses, reading from left to right is m, 2m, and 4m,…

Q: A plate drops onto a smooth floor and shatters into three pieces of equal mass. Two of the pieces go…

A: Let us assume each piece have equal mass be m and their velocity will v. and initially there was…

Q: 000 0000 Weight is shown by arrow # A force of 735 N is equal to the The net horizontal force acting…

A: 1. A force +735N is equal to - amount of  frictional force  From the free body diagram , we can say…

Q: The 260kg crate shown in the figure rests on a horizontal surface for which the coefficient of…

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Q: The figure shows two identical beams, each of mass M, connected by a hinge at the top and by a light…

A: Given that Two identical beams of each of  mass  =M =11kg A string in between the identical beams is…

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Q: Could a wave motion be set up in which the parts of the medium vibrate with angular simple harmonic…

A: Absolutely. One simple way to do this is to get a length of surgical tubing—the stuff they use to…

Q: The half-life of an material is approximated to be 5 days. After 50 days, it was observed that…

A: Given data:  Half life (T1/2) = 5 days Total time (t) = 50 days Remaining amount of material (N) =…

Q: A traveling wave is described by the equation x.t-1.2 cm sin 227 0.3 where x is in meters and it is…

A: Given, A travelling wave is described by the equation x,t =1.2cm sin2πx2.7+t0.3; where x is in…

Q: QUESTION 11 A teenager with myopia has a far point of 80 cm. What power of lens will be required to…

A: Given data The far point of the teenager is given as D = 80 cm.   According to the information…

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Q: What is the net torque about the axle?

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Q: An ideal gas is taken through a quasi-static process described by P = ?V2, with ? = 2.20 atm/m6, as…

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Q: A lens, with a focal length of 2 centimeters, forms an image at -34 centimeters.  How far (in…

A: Givenf=2 cmv=-34 cmusing lens formula1f=1v-1u

Q: A capacitor is made from two concentric spheres, one with radius 4.50 cm, the other with radius 7.60…

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Q: What is the maximum moment of a 10 m simply supported beam subjected to a concentrated load of 500…

A: Given data-  Value of load p=500 kN  Length of beam L=10 m

Q: If the quantum number n is doubled, by what factor does the Bohr radius change?   Question 15…

A: Given data:  The quantum number is doubled Required: By what factor the bohr radius changes

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Q: An object moves along the x-axis so its x-coordinate obeys the equation x=at² + bt+c, where a = 11,…

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Q: The perfect cube of ice floats with 9/10 of its volume submerged in water. Would the level of water…

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Q: Find the activity of a certain material after 4.3 weeks if it has a half life of approximately 174…

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Q: A 92-kg astronaut and a 1200-kg satellite are at rest relative to the space shuttle. The astronaut…

A: Given data, Mass of the astronaut m=92 kg Mass of the satellite M=1200 kg Speed of the satellite…

Q: Why is a wave pulse travelling on a string considered a transverse wave

A: As the pulse moves down the string, the elements of the string itself move up and down. Since the…

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.