Suppose you are in a flat, matter-only universe that has a Hubble constant Ho = 68 km s1 Mpc1. You observe a galaxy with z = 1. How long will you have to keep observing the galaxy to see its redshift change by one part in 106? [Hint: use the result from the previous problem.]

Q: Two very large charged parallel metal plates are 15.0 cm apart and produce a uniform electric fiold ...

A:

Q: A 4.5 cm needle is placed 12 cm away from a convex mirror of focal length 15 cm. Give the location o...

A: Height of the needle, h1=4.5 cmObject distance, u=-12 cmFocal length of the convex mirror, f=15 cmIm...

Q: Two speeding lead bullets, one of mass 12.0 g moving to the right at 300 m/s and one of mass 8.00 g ...

A:

Q: 1.7 2.1 2.S 2.7 3.0 3.2 33 3.5 3.6 (Q6) For the following electric circuit, the ing data is obtained...

A: Given: RL Ω VL  (V) IL mA 10 1 100 20 1.7 83 30 2.1 71 40 2.5 62 50 2.7 55 60 3 50 ...

Q: Using the formula for Euler-Lagrange EOM, one can find the Lagrangian and the EOM for a mass sliding...

A: Given data, A particle of mass m is sliding on a frictionless inclined plane.  

Q: steady winds at a speed of 8.5 m/s. The wind energy per unit mass is. less than 30 greater than 30 e...

A: Given Wind speed (v) = 8.5 m/s Determine, the wind energy per unit mass, as following below.

Q: 4 m The dart is thrown with a speed of 10 m/s. Part A: Determine the shortest possible time when the...

A: An intersecting transversal forms corresponding angles when it crosses a pair of straight lines. Cor...

Q: A block of 10.0 kg of solid gold at its melting point of 1,063.00°C changes phase to liquid gold at ...

A: Thermodynamics.

Q: 3) A ball O (mass m1) hits a second ball Assume that the impact is partially elastic (coefficient of...

A: Concept: Initial velocity of Ball 1 (v1) =20 m/s Initial velocity of Ball 2 (v2) = 0 (Since it is at...

Q: Find all the macroscopic and microscopic tt ft states of the system in the adjacent figure (A) Micro...

A: Macroscopic characteristics such as pressure, volume, temperature, entropy, electrical resistivity, ...

Q: G2/ATyans Porm ihe Hamiltonian ot he simple hay 0şcillatar H=ħw (aa ) to The Hamiltanian Containing ...

A:

Q: An emf is induced by rotating a 1000 turn, 19 cm diameter coil in the Earth's 5.00 x 10-5 T magnetic...

A: Given that,Number of turns : N = 1000Diameter : d = 0.19 (m)Radius : r = 0.095 (cm)Magnetic field : ...

Q: A steam turbine receives a steam flow rate of 2kg/s and the power output is ... 700 kW. The heat los...

A: Given, flow rate =2 kg/s power =700 kw The velocities at entrance and exit and the difference in ele...

Q: A battery of emf 10 V and internal resistance 3 2 is connected to a resistor. If the current in the ...

A: To find- Resistance of the resistor=R=? Terminal voltage=V=? Given- Emf of the battery, E=10 V Inter...

Q: A square coil of side 10 cm consists of 20 turns and carries a current of 12 A. The coil is suspende...

A: Given data-Length of a side of the square coil, l=10 cm=0.1 mCurrent flowing in the coil, I=12 ANumb...

Q: (b) A military radar identified an unknown object flying above Andaman Sea. The Radar Intercept Offi...

A: Kinematics.

Q: A cornot engine has an tempeualiueof sinkb bo°c flous should the fomp f seuce be inceeared if the en...

A: To find-Temperature of source increased by (T1)=?Given-η1=30%T2=56+273=329 Kη2=80%  

Q: Given the eigenfunction of the particle in a 1-D box of size a, Pn = sin determine (x), a (x), (px),...

A: Given, ψn=2asinnπxa

Q: What is the longest wavelength that can be observed in the third order for a transmission grating ha...

A: Given, N= 1500 slits/cm

Q: A planar charged sheet extending from-h to h in the z direction and extending infinitely in the r an...

A:

Q: 4 Five resistors are connected as shown in the diagram. The potential difference between points A an...

A: Given circuit: Potential difference between a and bVAB=15 V

Q: A shaft is rotating at a uniform speed with four masses m1,m2,m3 and m4 of magnitudes 300 kg, 450kg,...

A:

Q: an absolute magnitude of -3 is more luminous than an  absolute magnitude of-8.

A: Given, Absolute magnitude of objects

Q: A long straight horizontal cable carries a current of 2.5 A in the direction 10° south of west to 10...

A: Current in the wire, I=2.5 AAngle of dip at the given location on earth, δ=00Earth's magnetic field,...

Q: 5.8 Consider an expanding, positively curved universe containing only a cosmological constant (2, = ...

A: The Big Bounce is a cosmological scenario for the birth of the known universe that has been proposed...

Q: A (50kg) person runs up a (10m) stairway in (15s).what is the hors« power rating of the person?

A: Given: Weight of the person = 50 kg who runs up 10 m stairway in 15m  formula used: Change in potent...

Q: Why the temperature of melting ice does not change even though energy is being transferred as heat t...

A: Why the temperature of melting ice does not change even though energy is being transferred as heat t...

Q: EX: Determine the settlement by various methods for the footing illustrated in figure below :- 100 k...

A: Estimate the conditions as below.

Q: A 1.2 m copper rod has a mass of 2.15 kg. The when heated has a length of 1.201m. How much heat was ...

A: Given that,The initial length of the copper rod  : Li = 1.2 (m)The mass of the copper : m = 2.15 (kg...

Q: A 100kg person landing from a vertical jump has a vertical Momentum of -885kg-m/s upon impact with t...

A: This problem can be solved using Newton's second law. 

Q: Use the following constants if necessary. Coulomb constant, k = 8.987 × 10º N · m² /C². Vacuum permi...

A: Concept: The Formula to determine the magnetic field due to current carrying wire at any Point at a ...

Q: A spherical balloon with a radius of 10m is filled with air. The surrounding air is -10 °C. The ball...

A: Archimedes was the first one to give the concept of buoyancy. He was given an assignment by the king...

Q: A closely wound solenoid of 2000 turns and area of cross-section 1.6 x 10-4 m2, carrying a current o...

A: Given-Number of turns on the solenoid, n=2000Area of cross-section of the solenoid, A=1.6×10-4 m2Cur...

Q: Use the following constants if necessary. Coulomb constant, k = 8.987 x 10° N - m² /C². Vacuum permi...

A: Solution attached in the photo

Q: В. Find the oscillation frequency of the ball. Hint: Since the ball is undergoing simple harmonic mo...

A: Given,mass of ball =mradius=RA. Translational and rotational kinetic energy of the ball,KE=12mv2+12I...

Q: An electron is moving with a speed of 10.00 * 10^6 m/s. What is the speed of a proton that has the s...

A: Answer : If the speed of electron is ve and the mass of electron is me then the momentum of the elec...

Q: A rope is lengthened 4 inches by a weight of 2 pounds. The weight begins its motion from equilibrium...

A: Consider the given data: Displacement, x=4 inch=412 ft Weight, W=2 lb Velocity, v=12 fts Acceleratio...

Q: 20 V 6A R 120 80

A: Given, An electric circuit with current source and many resistors.

Q: b) Calculate the hole and electron densities in a N-type germanium semiconductor at room temperature...

A: Given in the problem conductivity σ =500Scmμn =3800 cm2Vsμp = 1800 cm2Vsni = 2.5 x 1013 /cm3

Q: A closely wound solenoid 80 cm long has 5 layers of windings of 400 turns each. The diameter of the ...

A: Length of the solenoid, l=80 cm=0.8 mThere are five layers of windings of 400 turns each on the sole...

Q: Q6: Find the shear flow solution of incompressible fluid with flow: V = 0, v2 =0 and v3 = v3(x) , no...

A: Fluid mechanics.

Q: 1. A vessel with liquid at 18°C is placed in a cooler held at 3 °C, and after 3 minutes the temperat...

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

Q: From the light and velocity curves of an eclipsing spectroscopic binary star system, it is determine...

A: Given: Obrital Period, T=6.31yr=6.31×3.154×107 sRadial Velocity of A, vA=5.4km/s=5.4×103 m/sRadial V...

Q: A short bar magnet placed with its axis at 30o with a uniform external magnetic field of 0.25 T expe...

A:

Q: Two large parallel plates are maintained at 700 and 300 K respectively. The hotter plate has an emis...

A: Given, T1= 700 KT2= 300 Kεh=0.9εc= 0.1

Q: 2-What is the significance of numerical aperture?

A: We have to explain the significance of numerical aperture

Q: A tank is filled with water to a height of 12.5 cm. The apparent depth of a needle lying at the bott...

A: Given, Real depth=12.5 cm apparent depth= 9.4 cm Refractive index= 1.63

Q: 130-kg crate shown is on a smooth horizontal plane and has an initial velocity of 2 m/s. A towing fo...

A: Given: The mass of the crate is 130 kg.            The initial velocity is 2 m/s.            The for...

Q: Calculate the number of iodine I nuclei decayed during the first day, if the initial mumber of nucle...

A:

Q: -ulale the numbee of molecules per ec of a gas f tha melei of molecules of ga8 es 2x10 om and the

A: