The Andromeda Galaxy is a member of the Local Group of galaxies. It is approaching us. Does this mean that the Hubble Law is wrong? Why or why not? Explain.

Q: index of refraction of Angle of refraction Angle of incidence Mystery A al 02 (degrees) 01 (degrees…

A:

Q: An electron in the beam of a TV picture tube is accelerated by a potential difference of 1.94 kV.…

A: We have an electron beam that is accelerated through a potential difference of V=1.94 kV as it…

Q: Magnetic Field of a Current Loop: A current-carrying loop of wire lies flat on a horizontal…

A: Here we can use right hand rule for finding the direction of field

Q: A man strikes one end of a thin rod with a hammer. The speed of sound in the rod is 15 times the…

A: Let l be the length of the rod.

Q: A neutron lives 896 s when at rest relative to an observer. How fast is the neutron moving relative…

A: Given: life span in rest frame ∆tο =896 secs              life span in moving frame ∆t =2770 secsTo…

Q: the magnifying glass 13cm from the object. a. Where is the image of the object? b. What is the…

A:

Q: Convert these vectors tO scale: Vector A= 20 km, 30° N of E Vector B= 15 km, 200 W of S Vector C= 25…

A: Draw the schematic diagram of the system.

Q: 7. Velocity 8. Acceleration 9. Density

A:

Q: To measure the static friction coefficient between a 4.50-kg block and a vertical wall, the setup…

A:

Q: The amount of work done due to carrying a q=+4μC charge from point A to point B is equal to w=100μJ.…

A: charge (q) = 4μC work (W) = 100μJ

Q: Resolve the vectors graphically.(Round-off all answers to the nearest hundredths). 1. Given: F, =…

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

Q: Ana's eyes have a near point at 25 cm and a far point of 100 cm. She needs spectacle glasses to…

A:

Q: Low-pitched sounds have A. Low frequencies. B. Long periods. C. Both of the above. D. None of the…

A: Low-pitched sounds have A. Low frequencies. B. Long periods. C. Both of the above. D. None of the…

Q: A particle with a mass of 2.3x 10 20 kg is oscillating with simple harmonic motion with a period of…

A:

Q: For sodium light of wavelength 5893Å, calculate thickness of quarter wave plate. Given ne = 1.553…

A:

Q: an electric dipole consists of charges +/-500uC separated by 5.00 mm. It is placed in a vertical…

A:

Q: Christmas tree ball. If your face is 23.0 cm away from the ball's front surface, where is your…

A:

Q: A uniform disk with radius R = [R} m and mass [M} kg rotates in a horizontal plane on a %3D…

A:

Q: For the parallel circuit given, compute for the dissipated power for R3 A 24.6 Watts B. 38.6 Watts…

A: Given data:  Three resistors are connected in parallel combination R1 = 22 Ω R2 = 10 Ω R3 = 5 Ω…

Q: An 11.0-kg stone at the end of a steel (Young's modulus 2.0 x 1011 N/m²) wire is being whirled in a…

A:

Q: A person makes a quantity of iced tea by mixing 580 g of hot tea (essentially water) with an equal…

A:

Q: Figure shows a brick of weight 2kgf and dimensions 20cm × 10cm × 5cm placed ir three different…

A:

Q: 7.40 • A 2.00 kg block is pushed against a spring with negligible mass and force constant k = 400…

A:

Q: Physics: Unit-Dynamics/Newton's laws of motion A student claims the following about the…

A: Statement of student  "I wish there was no friction when I'm sliding down those small hills, but I'm…

Q: Two resistors of 2 Ω and 4 Ω are placed in series with a 12- V battery.   1. Which of the…

A:

Q: The L-shaped object in the figure(Figure 1) consists of three masses connected by light rods. What…

A:

Q: Calculate for the % difference between the initial and final kinetic energies of the total/whole…

A: This question is based on Work Energy and Power chapter. Percentage change in Kinetic Energy…

Q: How much should the temperature of a brass rod be increased so as to increase its length by 1%?…

A:

Q: an object of mass 40kg are placed on the height of 30m from the ground . Find the total energy of an…

A:

Q: What is the angle between vectors A- 2i + 3j + k and B- 3i • 2j • K?

A: Given Data: The vector A is: A=2i+3j+k The vector B is: B=3i+2j+k

Q: If the lens-to-retina distance of a woman is 1.98 cm, and the relaxed power of her eye is 51.0 D...…

A:

Q: not incomplete, all the info is right there. Use the question to solve for (a) then (b) then (c)…

A:

Q: A horizontal aluminum rod 3.9 cm in diameter projects 5.5 cm from a wall. A 1100 kg object is…

A: a) Determine the shear stress of the rod.

Q: ?2 are placed along a horizontal line and separated by distance ? =4.0 cm, with ?1 placed to the…

A: We know that the force between the charge is given as  F = kq1q2r2 where k is the coulomb's constant…

Q: Find the unknown currents using Kirchhoff's Current and Voltage Law. Then, determine the voltage…

A: The resistances are, R1=1 kΩR2=5 kΩR3=3.5 kΩR4=10 kΩ The voltages of batteries are, V1=100 VV2=70…

Q: A particle attached to a string of length r=3m, is forced to move in a circle with constant speed.…

A:

Q: A 75-kg adult sits at one end of a 9.0-m-long board. His 25-kg child sits on the other end. (a)…

A:

Q: A ball of mass 0.440 kg moving with a speed of 4.5 m/s collides head-on with a 0.220 kg bal at rest.…

A:

Q: Two boys raising a bucket pull it at an angle 0 to each other. If each exerts a force of 20 N and…

A:

Q: An ambulance with a siren emitting a whine at 1690 Hz overtakes and passes a cyclist pedaling a bike…

A:

Q: block of wood has a mass of 3.71 kg and a density of 515 kg/m3. It is to be loaded with lead (1.13 ×…

A:

Q: A uniform thin rod of length 0.48 m and mass 3.5 kg can rotate in a horizontal plane about a…

A: Given, Length of the rod, L = 0.48 mmass of the rod, M = 3.5 kgmass of bullet, m = 3.2 gθ =…

Q: Find the angle between the two vectors: A = 10î + 5ĵ – 3k and B = 5î + 2ĵ + k

A:

Q: How should you place a rectangular box on a table such that it exerts the maximum pressure on it?…

A: Let the length of rectangular box = L  Let the breadth of rectangular box = b  Let the height of…

Q: In a 290-turn automobile alternator, the magnetic flux in each turn is PR = 2.50 x 10-4 cos wt,…

A:

Q: 13. [0/2 Points] DETAILS PREVIOUS ANSWERS OSCOLPHYS2016 22.10.P.055. MY NOTES ASK YOUR TEACHER…

A:

Q: he electric field in a certain region of space is given by E = 200i. How much flux passes through an…

A: Given Data:-  The electric field in a certain region of space is given by E = 200i. Find:-  How much…

Q: Simplify the complex circuit below and find the following if 20-V of voltage is supplied. A) Total /…

A:

Q: Find the resultant vector using the analytical method. Vector A= 20 km, 30° N of E Vector B= 15 km,…

A:

Q: Example: A diffraction grating has 600 lines per mm. If such a grating is illuminated normally with…

A:

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.