Certain spiral galaxy is 10.6 Mpc away from us. How fast in km/s is this galaxy moving away from us?    Note: Assume a value of the Hubble constant of 71.0 km/s/Mpc

Q: 4. Two converging lenses, both of focal length C cm, are separated by 60.0 cm. An object is placed…

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Q: A merry-go-round is a common piece of playground equipment. A 3.0-m-diameter merry-go-round, which…

A: Given Mass of the merry-go-round is M=280 kg Mass of John is m=30 kg Diameter of the merry-go-round…

Q: The arrows in the image represent gravitational forces experience by a moon. The size and direction…

A: Gravitational force is a long range force which acts along the libe joining the two objects towards…

Q: What do the subscripts on the density variable mean?

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Q: Metric System: The metric system is preferred over the British system in science for the following…

A: We need to find why the metric system is preferred over the British system.

Q: The flywheel of a motor has a mass of 300 kgkg and a moment of inertia of 580 kg⋅m2kg⋅m2. The motor…

A: Given m=300 kg(mass) I=580 Kg m2 (moment of inertia) τ=2000 Nm(torque)

Q: determine whether each object SPED UP THE ENTIRE TIME & changed direction) choose all that apply.

A: Object 1As we can see that the angular velocity increases as time elapsedso speed up is correctrest…

Q: A mass m1 rests on a frictionless horizontal table. Attached to it is a string which runs…

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Q: A uniform ruler of mass (200g) rotates with an angular velocity of 3 rads/s about a perpendicular…

A: Given data:  Mass (m) = 200 g = 0.200 kg Length (L) = 1 m Angular velocity (ω) = 3 rad/s Momentum of…

Q: A Weston cell is a calibration standard for O Wattmeter O Ammeter O Capacitance meter O Voltmeter

A: Given data:  A weston cell Required: For which device weston cell is used as calibration standard

Q: The attached image shows four wave functions in the region x > 0. Indicate for each wave functino…

A: Numbered the above wave functions as a), b), c), and d).

Q: A simple pendulum oscillates with an amplitude of 10.0°. Part A What fraction of the time does it…

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Q: of a spherical mirror of radius 36.6 cm, you position an object of height 3.26 cm somewhere along…

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Q: A PARTICLE IS MOVING ALONG A HORIZONTAL LINE ACCORDING TO THE GIVEN EQUATION WHERE AT (t) SECONDS,…

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Q: 1. Which force diagram represents the correct magnitudes and directions of the electric forces (F)…

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Q: A carbon nucleus and an iron nucleus are initially located 5.02 nm apart from one another. How much…

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Q: A PARTICLE IS MOVING ALONG A HORIZONTAL LINE ACCORDING TO THE GIVEN EQUATION WHERE AT (t) SECONDS,…

A:

Q: Two loudspeakers, A and B, are driven by the same amplifier and emit sinusoidal waves in phase. The…

A: Here is your solution -

Q: 6. An object is placed D cm from a B cm focal length converging lens. Determine the image position,…

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Q: Problem 3: Consider the arrangement of three identical small charged spheres, each of mass 6.2 g and…

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Q: Inelastic Collisions: A 2.0-kg mass moving at 5.0 m/s suddenly collides head-on with a 3.0-kg mass…

A: The mass of object A: mA=2.0 kg The mass of Object B: mB=3.0 kg The initial speed of object A:…

Q: - The electric potential in a region of space is V (300 V.m) √I²+y² where and y are in meters.

A: Given data, Electric potential V=300x2+y2, and point x,y=2.7,2.8

Q: Evaluate the cross product A×B if A = 39, B = 59 and θ = 43°. Evaluate the cross product C×D if C =…

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Q: 13. A thin rod of length 2L carries a uniform linear charge density + lies along the x-axis with its…

A: A thin rod of length= 2L uniform linear charge density=+λ midpoint of rod centered at the origin.

Q: focal length 49.2 cm, you position an object of height 3.55 cm somewhere along the principal axis.…

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Q: Determine the maximum cylinder weights W for which the system is in equilibrium. The coefficient of…

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Q: It is generally a good idea to gain an understanding of the size of units. Consider each object and…

A: We need to find the momentum for each given case.

Q: A welder using a tank of volume 8.00×10-2 m³ fills it with oxygen (with a molar mass of 32.0 g/mol)…

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Q: 2. Three best friends: Mr. Chapman, Detective Manchap, and DJ ChappleJax, were travelling to a…

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Q: Calculate the speed of light in air, water, and diamond if the refractive indices are  1.0003,…

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Q: A construction worker is lifting a uniform beam off the floor. The beam is 2.95 meters long and…

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Q: A water tower is a familiar sight in many towns. The purpose of such a tower is to provide storage…

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Q: What was the frequency of her violin when she heard the 4.00 Hz beat? To get her violin perfectly…

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Q: If the mass of Earth is 5.97 x 1024 kg, the mass of the Moon is 7.35 x 1022 kg, and the…

A: mass of earth = 5.97×1024 kg mass of moon = 7.35×1022 kg center to center distance (D) = 3.84×108 m…

Q: For a fifth set of maneuvers, the astronaut’s partner calculated her average acceleration over the 2…

A: Given data:  Time interval (Δt) = 2 s Initial velocity (v1x) = -0.4 m/s Acceleration (ax) = -0.5…

Q: hold in your hand a block of material with 3 x 10^ 27 protons, 3.4 x * 30 points 10^27 neutrons,…

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Q: The image to the left shows several different optical effects, including reflection, refraction, and…

A: The light from steel rod travels through the following media in order: 1. Water in glass 2. Glass 3.…

Q: Two +1 C charges are separated by 3000 m. a) Draw a sketch of the scenario. b) What is the magnitude…

A: Given data:  Two charges q1 = q2 = +1 C Distance (r) = 3000 m Required: The magnitude of the…

Q: A solid sphere composed of insulating material has a radius of r. The sphere contains a charge of +Q…

A: Given data:  A solid insulating sphere Radius = r Total charge in the sphere = +Q Required: The…

Q: the angle 8? A. 35° B. 42° C. 48° D 65° A "mirror box" is constructed out of flat reflective panels…

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Q: The drawing shows an intravenous feeding. With the distance shown, nutrient solution (p = 1040…

A: GIVEN-            density of nutrient solution ( ρ = 1040 kg/m3 )              h = 0.610 m

Q: what is the gravitational force acting on a person due to another person standing 2 meters away.…

A: Given data:  Two persons having same mass Distance (r) = 2 m Mass of each person (m) = 59 kg…

Q: How can the electromagnetic spectrum infer the energies of electrons within atoms and molecules?

A: Answer=  •Photons in the UV or apparent scopes of the EM range can have adequate energy to energize…

Q: NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to…

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Q: In this example, we will find the position and magnification of an image formed by a spherical…

A: The object is placed in front of the mirror hence the sign of the object is negative and the object…

Q: A ladybug of mass m crawls with constant speed v1 (relative to the wheel) along a radial spoke of a…

A: Given: ladybug speed, v1 radius of wheel , R acceleration of bicycle, a0 speed of bicycle, v2 To…

Q: Train cars are coupled together by being bumped into one another. Suppose two loaded train cars are…

A: Givencar 1            velocity, v1=0.33 m/s        mass,  m1=2.25×105 kgcar 2       velocity,…

Q: In this example, we will apply Snell's law to the refraction of light across a water–air interface.…

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Q: Water towers store water above the level of consumers for times of heavy use, eliminating the need…

A: Given data:  Gauge pressure (Pgauge ) = 3.51×105 N/m2 Required: The height (h) in m

Q: In what ways are the image of the rod distorted by the water, the air, and the curved surface of the…

A: Snell's law is an expression used to define the correlation between the incident angle and…

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.