If a telescope is 10 times bigger in diameter it will gather _________ times more light than a smaller telescope

Q: *10. A computer is reading data from a rotating CD-ROM. At a point that is 0.030 m from the center…

A: Given, distance of Point A from the center of the disc, rA = 0.030 m centripetal acceleration, ac =…

Q: A speed skater moving to the left across frictionless ice at 7.8 m/s hits a 4.5-m-wide patch of…

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Q: 27. ssm Synchronous communications satellites are placed in a circular orbit that is 3.59 x 107 m…

A: Given data:  Altitude (h) = 3.59×107 m, above the surface of the earth  Required: The magnitude of…

Q: Suppose a 0.3 m long solenoid with cross-sectional area of 12 cm ², N 1 = 1400 turns and N 2 = 20…

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Q: Imagine 2 locations, a snowy one, and a warm one. Both locations have a water vapor amount of 7 g/kg…

A: Humidity is important aspect of atmosphere. It is the presence of water vapor in the atmosphere. It…

Q: 7.5: An 7.5: An isosceles prism Example refracting angle 179° and refractive index 1.5 is used as a…

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Q: stella has hyperopia. The nearpoint of her right eye is 175 cm. What lens will restore the vision in…

A: Solution:-  Concept and formulas used:- 1) A person with Hyperopia eye can see distant objects…

Q: How does the tension in a "real" rope (that is attached to the ceiling holding up a mass) vary from…

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

Q: For a toroidal solenoid, suppose the number of turns is 147, the area is 6.18 cm 2, and the radius…

A: Write the expression for the self-inductance and substitute the required values.

Q: 1. On the last worksheet we found that a 2016 Lamborghini has a maximum acceleration of 10.3 m/s².…

A: As per our guidelines  we are supposed to answer only one question. Kindly repost other question as…

Q: An airplane flies eastward and always accelerates at a constant rate. At one position along its…

A: Given value--- Initial velocity = 26.7 m/s. distance = 42500 m. final velocity = 42.3 m/s. We have…

Q: three distinct unit systems

A: Fundamental units are the base units that are internationally accepted and are given for base…

Q: Two ropes in a vertical plane exert equal magnitude forces on a hanging weight but pull with an…

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Q: In the circult of the figure below, determine the current in each resistor and the potential…

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Q: In a perfectly elastic collision, in addition to momentum always being conserved, the kinetic energy…

A: Given:-  Two balls of different mass m1 & m2 collied to each other with the initial velocity u1…

Q: QUESTION 7 Point charges, Qy42 nC and Q₂-53 nC, are placed as shown below it an election is released…

A: Question 7 Given,  Q1 = +42 nC Q2 = -53 nC We know, PE of electron = KE

Q: The diagram below shows a circuit where R1=4 Ω, R2=6 Ω, R3=5 Ω, V1=6 Volts, V2=10 Volts, and V3=7…

A: Given, R1 = 4 ΩR2 = 6 ΩR3 = 5ΩV1 = 6 VV2 = 7 V

Q: A proton with mass 1.67 x 10-27 kg is propelled at an initial speed of 3.00 x 105 m/s directly…

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Q: What happens to the electric field density when the cross-sectional area and plate separation…

A: The voltage, electric field relationship between two cross sectional plate seperated by D distance…

Q: A graph of velocity versus time for a football into a goal appears as follows. Draw the position…

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Q: A thin, metallic, spherical shell of radius a = 7.0 cm has a charge qa = 9.00×10^-6 C. Concentric…

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Q: 3. A ball is thrown vertically downward from a height of 240 feet with a velocity of 32 ft/s. How…

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Q: A simple pendulum makes 105 complete oscillations in 3.20 min at a location where g = 9.80 m/s2.…

A: Given data:  Number of revolutions = 105 Time (t) = 3.20 min Acceleration due to gravity (g) = 9.80…

Q: mperature coefficient of resistance of wire 1S x 10³K¹, the temperature at which the resistance…

A: The temperature coefficient of resistance is generally defined as the change in electrical…

Q: A 0.62-kg block attached to a spring with force constant 154 N/m is free to move on a frictionless,…

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Q: A vector has an x-component of -23.0 units and a y-component of 28.5 units. Find the magnitude and…

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Q: Can you please tell me (answer #5) how you got the cos 5.1496 = 0.4234 ??? from x = (2.00) cos…

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Q: is given an initial velocity of 42.1 m/s at an angle of 53.8 degrees with respect to the horizontal.…

A: Initial velocity = V0 = 42.1 m/s Angle = 53.8 degrees Final vertical velocity = Vy = 10.4 m/s

Q: An object (height = 8 cm) sits 18 cm in front of a convex mirror (focal length = -75 cm). Determine…

A: height of object (h) = 8 cm object distance (d) = 18 cm focal length of convex mirror (f) = -75 cm…

Q: The image below shows a constriction in a circular water pipe where water flows from left to right.…

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Q: 20. GO A golfer hits a shot to a green that is elevated 3.0 m above the point where the ball is…

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Q: Neutron stars, such as the one at the center of the Crab Nebula, have about the same mass as our sun…

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Q: 17. Velocity and Position A particle is moving in a straight line in such a way that its position at…

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Q: A projectile is launched with an initial velocity of 49.8 m/s at an angle of 25.4 degrees with…

A: Given data:  Initial velocity (u) = 49.8 m/s Angle (θ) = 25.4°, with the horizontal  Required: The…

Q: Vector 'A' has a magnitude of 37.0 units and it points in a direction 320° counterclockwise from the…

A: According to given question, Components of vector (A)   (  Ax, Ay) = (A cosθ ,A sinθ) Also given by…

Q: what is the power factor of this solution?

A: Given: Resistance R = 99 ohm            Inductive reactance XL = 88 ohms To find: Power factor

Q: What is the magnitude of the tension force in rope 1? + What is the magnitude of the tension force…

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Q: A light truck of 2000 kg mass has to be pushed with a force of 1975 N. If the frictional force is…

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Q: The equivalent resistance of three parallel resistors is 10 ohms. If two of the resistors have…

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Q: If R = 100 ohm, C = 0.05 F (Farad) and Q = 100 Coulomb, find q(t) at t = 2, 5 t and 10 second where…

A: Given, R = 100 ΩC = 0.05 FQ = 100 C

Q: . Mrs. Scott selects a sample from her class by picking 8 numbers from her hat and each number is…

A: Answer A is correct

Q: an electric field of 143x10^-6v/m is induced within the loop of long solenoid with cross sectional…

A: Given, ε= 143x10-6 V/m  Area (A) = 6.69 cm2  Radius(R) = 2.12cm  Rate of change of current(di/dt)=…

Q: A light beam is reflected by a planar mirror. So, what will the angle of refraction be?

A: Given:- A light beam is reflected by the planar mirror. Find:-  what will the angle of refraction…

Q: (a) Calculate the momentum of a 2000-kg elephant charging a hunter at a speed of 7.50 m/s. (b)…

A: Mathematically, Linear Momentum is given by p=mv, where,  m is mass of moving object v is velocity…

Q: 11. The beat frequencies produced by several like instruments that are slightly out of tune with…

A: Beat is produced when two waves of nearby frequencies superimpose when they travel in the same path.…

Q: The atmospheric pressure at sea level is 101 kPa. If at an elevation 10,000 ft above sea level,…

A: Given That: Atmospheric Pressure at sea level: pa=101 kPa at level of sea, So the Height will be:…

Q: A 100-N force is making an angle of 60° with the horizontal. Find the vertical and horizontal…

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Q: 5. Derive a formula for the amount of time it takes for something to hit the ground if it is dropped…

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

Q: Rachael is pulling a 47 kg box up a hill with a 40 degree angle above the horizontal at a constant…

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Q: What is the velocity of a 900-kg car initially moving at 30.0 m/s, just after it hits a 150-kg deer…

A: Given data as per the question Initial velocity =30 m/s  Mass of the car =900 kg Mass of deer =150…

Stellar evolution

We may see thousands of stars in the dark sky. Our universe consists of billions of stars. Stars may appear tiny to us but they are huge balls of gasses. Sun is a star of average size. Some stars are even a thousand times larger than the sun. The stars do not exist forever they have a certain lifetime. The life span of the sun is about 10 billion years. The star undergoes various changes during its lifetime, this process is called stellar evolution. The structure of the sun-like star is shown below.

Red Shift

It is an astronomical phenomenon. In this phenomenon, increase in wavelength with corresponding decrease in photon energy and frequency of radiation of light. It is the displacement of spectrum of any kind of astronomical object to the longer wavelengths (red) side.