Why does the spectrum of most stars (including the Sun) show absorption lines in which light is missing? Where did this missing light go?

Q: A particle moves along the x-axis. It is initially at the position of 0.270 m, moving with a…

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Q: time A rabbit, seeing a dog at time t = 0, runs away in a straight line. The figure shows the…

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Q: 2. Write the kinetic, potential and total energy of a baseball having a mass of 0.145kg held 10…

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Q: Which of the following scenarios shows an object with a negative velocity and a negative…

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Q: During a baseball game, a baseball is struck, at ground level, by a batter. The ball leaves the…

A: Given data:  Initial velocity (v0) = 41.7 m/s Angle (θ) = 40.5° above the horizontal Required: The…

Q: The figure shows a thin plastic rod of length L = 12.5 cm and uniform positive charge Q = 51.0 fC…

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Q: Consider the following three groups of point charges (each of which is very far from each othe and…

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Q: The eye of a hurricane passes over Grand Bahama Island in a direction 60.0° north of west with a…

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Q: You want to move a heavy box with mass 30.0 kg across a carpeted floor. You pull hard on one of the…

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Q: 2.[Single Choice] A point charge Q a cube with its side length a cube A B C Qa €0 0 is placed in .…

A: Given data:  A point charge Q is placed in a cube Side Length of the cube = a Required: The flux…

Q: A pig on roller skates is moving with an initial velocity of -10 m/s and is accelerating at a rate…

A: Given data:  Initial velocity (u) = -10 m/s Acceleration (a) = 2 m/s2 Time (t) = 2 s Required: The…

Q: A function f is given by ƒ== EX 2y where x = 7.82, y = 5.65± 0.05, z = 8.87 ± 0.03. Calculate the…

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Q: True or false-The image shows a velocity vs. time graph for a jet car. If you take the slope at any…

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Q: 3. The electric potential at point P midway between the two point charges shown below is a Volts.…

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Q: How much power does it take to lift 40.0 N 11.0 m high in 6 s?

A: Given data:  Weight (mg) = 40.0 N Height (h) = 11.0 m Time (t) = 6 s Required: The power (P)

Q: Type your answers in all of the blanks and submit X₂ X² Ω· 37° Figure 5-57 Question 5-118. 53°…

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Q: Calculate the force needed to do 500 J of work while pulling a cart a distance of 3.4 m.

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Q: The potential difference across the terminals of a cell is 1.5 volts. It is connected with a…

A: Given data:  Voltage (V) = 1.5 V Resistance (R) = 30 Ω Required: The current (I)

Q: Consider a point charge q=0.93 µC, point A at distance d₁ = 1.7 m from q, and point B at distance d₂…

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Q: Consider an object sliding down a frictionless ramp that is inclined an angle above the horizontal.…

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Q: 13. A 100 watt light bulb runs for 120 seconds. How much energy does it use?

A: Acording to given question  Bulb has power 100 watt I.e  it has required 100 joule energy per second…

Q: A projectile is launched from point A with the initial conditions shown in the figure. Determine the…

A: Given data: The velocity v∘=124 m/s The angle θ=37°   The distance =600 m

Q: To determine the electric force on a 2.5 x 104 kg neutral pith ball, a student charges a Van de…

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Q: An airplane flying horizontally at a velocity of 138 m/s and at an altitude of 1500 meters when one…

A: Given data:  A airplane is flying horizontally Initial horizontal velocity (u0x) = 138 m/s Vertical…

Q: The system is initially at rest with no slack in the cable, and the mass and friction of the pulleys…

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Q: Answer Part B. Vectors x and y are moving with uniform velocities. If the image below is t = 0, how…

A: Part B. Given, vx =70 kph =70× 518 =19.44 m/svy =50 kph =50× 518 =13.89 m/s Let they meet at time t,…

Q: Hi, can you elaborate in more detail step # 6 and 7 above?  I don't get where you got the numbers 25…

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Q: A parallel-plate capacitor is formed from two 9.6 cm-diameter electrodes spaced 1.1 mm apart. The…

A: diameter = 9.6 cm radius = 4.8 cm separation between the plates = 1.1mm electric field strength (E)…

Q: In a basketball game, the point guard A intends to throw a pass to the shooting guard B, who is…

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Q: How long does it take to accelerate from 8.0 m/s to 20.0 m/s at a rate of acceleration of 3.0 m/s²?…

A: If acceleration of any object is constant then from equation of motion velocity of object after time…

Q: An object of mass m₁ = 4.00 kg is tied to an object of mass m₂ = 3.20 kg with String 1 of length =…

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Q: The electric field strength 3.0 cm from the surface of a 10-cm-diameter metal ball is 80,000 N/C. ▼…

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Q: The figure shows two blocks, initially at rest and connected by a light horizontal rope. At t = 0, a…

A: Given value--- P = 67.1 N. T = 23.8 N. s = 18.5 m in 2.47 s. initial speed = 0 m/s We have to…

Q: The pressure, P, is equal to the quotient of force, F and area, A.   Which equation below represents…

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Q: In the figure a potential difference V = 130 V is applied across a capacitor arrangement with…

A: according to question we need to find charge , potential and potential energy across each capacitor.…

Q: Calculate the total inductance:

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Q: A person runs up a long flight of stairs in 10 seconds. If the person's weight is 600 N and the…

A: Given data Weight of the person W = 600 N time taken t = 10 s Power is defined as the work done per…

Q: 8. For relativistic speeds, to whom does an object seem longer in length? O an observer moving with…

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Q: 7. A 90.0 kg man pushes on a 5.0 x 106 ton wall for 350 s but it does not move. How much work does…

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Q: In the experiment, you will study an oscillator called a "torsion pendulum." In this case, the…

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Q: Question 12 E₁ R₁ 1₂ E₂ B R₂ 13 1′3 E3 A The circuit above consists of 3 different imperfect…

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Q: Which one of the following is NOT consistent with a car which is accelerating? O A car is moving…

A: An accelerating object must be changing its velocity by either slowing down, speeding up or changing…

Q: Please answer the following question(s): 1. An object of mass m is sliding down an incline that…

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Q: 3. I throw a ball up into the air with a speed of 8m/s. a. How long does it take before it is 3…

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Q: A star near the visible edge of a galaxy travels in a uniform circular orbit. It is 49,600 ly…

A: Given:-  The distance between the star and the center of the galactic is d = 49600 ly [light year ]…

Q: Two small metal cubes with masses 2.0 g and 4.0 g are tied together by a 5.3-cm-long massless string…

A: Given Data: Mass of cube 1 m1=2 g Mass of cube 2 m2=4 g Charge on each cube q=+1.7 μC=+1.7 ×10-6 C…

Q: A spring loaded gun shoots a 0.0050-kg bullet vertically upward with an initial velocity of 21 m/s.…

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Q: A man sailing a boat follows the directions to a dock. The instructions stated that he has to sail…

A: Given value--- The instructions stated that he has to sail 25.0 m in a direction 60° E of N from…

Q: The electric field-1.6 cm from a small object points away from the object with a strength of 2.8x105…

A: Given, Electric field = 2.8×105 N/C Distance, r = 1.6cm = 0.016 m We know that electric field = kqr2…

Q: Show a plausible way how to arrive at the time-independent Schrödinger equation: Learn how your text…

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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.