What is the only viable explanation for so much mass in so small a region at the core of our galaxy?   a. a tight cluster of stars   b. many neutron stars   c. many stellar black holes   d. a single massive black hole   e. none of the above

Q: The gauge pressure in each of the four tires of an automobile is 240 kPa. If each tire has a “footpr...

A: Given: The gauge pressure in each tire is P=240 kPa. The area covered by each tire is A=190 cm2. T...

Q: Q8: For a particle moving in one dimension, show that the operator ?̂?̂ is NOT Hermitian. Construct ...

A: Let us take hermitian for particle moving in one dimension. H = P^2dm + V (x)      = -h22m d2dx2 + V...

Q: An iron wire with cross-section 2.1 x 10 ºm² carries current 149 A. Find the drift velocity Va, in u...

A: Area of cross section of wire(A)=2.1×10-6 m2 Current (I)=149 A  Number density of electrons in Iron=...

Q: Star clusters are important to our study of stars because   a. all stars formed in star clusters...

A: A star cluster is a group of stars that share a common origin and are gravitationally bound for some...

Q: The wheel shown in the figure has eight equally spaced spokes and a radius of 30 cm. It is mounted o...

A: Given: The radius of the wheel is R = 30 cm The number of revolution that the wheel is spinning with...

Q: Objects in binary systems consist of a neutron star accumulating material from another star on its s...

A: Answer:b) X-ray bursters.  X-ray bursters are basically are one class of X-ray binary stars exhibiti...

Q: What keeps a neutron star from collapsing into a black hole?

A:     The neutron doesnot collapse into the blackhole because of Pauli's exclusion principle.

Q: 4 charged particles are distributed qs shown, each charge is equidistant from the origin. In which d...

A:

Q: A solid sphere of radius R contains a total charge Q distributed uniformly throughout its volume. Fi...

A: The potential due to a sphere is given by, Vr=kqr The charge q is dependent on r, because the charge...

Q: A pair of narrow, parallel slits separated by 0.260 mm is illuminated by the green component from a ...

A: Separation of slit, d=0.260 mm= 0.260×10-3 m Wavelength of the illuminated light, λ=546.1 nm=546.1×1...

Q: (a)    An positron (electron with a positive charge) starts at rest and accelerates through an elect...

A:

Q: In degenerate matter,   a. pressure depends only on the temperature.   b. temperature depend...

A: In degenerate matter pressure depends on only the speed of the degenerate particles but not depends ...

Q: If a stellar remnant is greater than 1.4 solar masses but less than about 3 solar masses, the result...

A: If a stellar remnant is greater than 1.4 solar masses but less than about 3 solar masses, the result...

Q: Q. 2 The angular acceleration of an rotating body is define by the relation a = - the value of k if ...

A: given that,Angular acceleration α=-kθ

Q: Plz don’t forget to sketch a diagram (with forces) and formulas complete on it

A:

Q: 8. A pendulum with a length of 1.00 m is released from an initial angle of 15.0°. After 1 000 s, its...

A: Given that,Length of pendulum ( L ) = 1 (m)Initial angle ( θo ) = 15°After 1 sec, it's amplitude has...

Q: DETERMINE THE MAGNETIC FIELD STRENGTH OF A CURRENT CARRYING WIRE THAT HAS 5A CURRENT RATING AND 35 W...

A: Current, I=5A Number of turns, N=35 Radius, r=20 cm=0.20 m

Q: Why would a neutron star have such a strong magnetic field?

A: Neutron star is basically consists of about 80% of neutrons, 10% of electrons and 10% of protons. Th...

Q: Problem 4: How much energy is stored when a 100 µF capacitor has a charge of 50 mC? f this energy is...

A: A capacitor is a device that stores electric charge in an electric field. Similarly, An inductor, al...

Q: If yixt) - (5.3 mm) sinikx + (670 rad/s)t + q] describes a wave traveling alonga string, how much ti...

A: In this case, y1 = +3.1 mm y2 = -3.1 mm Let when the point be at y1 the time be t1 and when the poin...

Q: If the force of gravity between a book of mass 0.50 kg and a calculator of 0.100 kg is 1.5 × 10-10 N...

A:

Q: During a 60 seconds period, a loop-detector is occupied by vehicles for the following times: 0.28, 0...

A: Given that,Time = 60 secDistance between the loop detectors = 3 mAverage length of the vehicle = 6.2...

Q: A large capacity with a small hole and kept at temperature T is a good approximation for an ideal ra...

A: The black body absorbs or emits all the EM radiation falling on it. Here the cavity which has a smal...

Q: 3. (See Problem 77, OpenStax Chapter 8) A spherical capacitor is formed from two concentric spherica...

A: (a) Given: The inner radius of the sphere is 12.5 cm. The outer radius of the sphere is 14.8 cm. The...

Q: A 1m tall vertical tube is filled with 20 degrees C of water.  A tuning fork vibrating at 561 Hz is ...

A: At what water heights, measured from the bottom of the tube, will there be a standing wave in the tu...

Q: What is average illuminance level? How to solve?

A: Average illuminance Level:- The average illuminance. Generally, when we talk about of illuminance we...

Q: Consider a 100 Ǻ GaAs/AlGaAs quantum well where the electron effective mass is 0.067 m0. There are 2...

A: Given that, A 100  Å GaAs/AlGaAs quantum well,me*=0.067 m0ne=2×102/ cm2Magnetic field at which fermi...

Q: in a duct, which shown in the tic between sections (1) and (2) ctions (2) and (3). The pressure, w a...

A: Given:- Pressure= 200 kPa Temperature =320 K Velocity         = 150 m/s    

Q: Advanced Physics Question

A: The problem can be solved by using the concept of equivalent resistance in series and parallel conne...

Q: Using a convenient scale, find the resultant of the following vectors graphically: 10m at40o with th...

A:

Q: Europium-141 undergoes a radioactive decay according to the pictured equation   (a) Balance the equa...

A:

Q: If the electric force between two charges is 4.2 × 10-2 N, what would the new force be if the distan...

A: Given:F1=4.2 × 10-2 NDistance between charges=Rcharge '1'=q1charge '2'=q2

Q: 2. Modern physics.  Please provide a clear, correct, and well explained solution for the following

A: please see the next step for solution

Q: Wile E Coyote (below) has a mass of 12.5 kg and is on a hill with a height of 55 m above a valley. H...

A: Given, Mass,m=12.5kgInitial height,hi=55mFinal height,hf=100mAcceleration due to gravity,g=9.8m/s2 (...

Q: An ultrashort pulse has a duration of 8.10 fs and produces light at a wavelength of 504 nm. What is ...

A: We know De Broglie wavelength for matter waves is given by, λ=hp Heisenberg uncertainty principle fo...

Q: Plz don’t forget to sketch a diagram (with forces) and formulas complete on it

A:

Q: (a) Explain as to why or why not the formula for total mass of a nucleus mn given below in term of p...

A: Here, we look into the mass of the nucleus formula and see how it is related to binding energy.

Q: Consider a satellite in stationary orbit that beams a signal earthward with a power of 4.9 kilowatts...

A: The Power density is given as:S=PAwhere, P=4.9 K watts=4.9×103 WA is the area of circular region: πr...

Q: An ultrashort pulse has a duration of 8.10 fs and produces light at a wavelength of 504 nm. What is ...

A: The uncertainity of position : ∆x = c∆t       =3 ×108  8.10×10-15 ∆x = 2.43 × 10-6 m

Q: 5. A solid steel disk E=200X10^9 N/m^2 start rotation from the rest with constant acceleration. When...

A: Given: The radius of disk is R=2 m. The initial angular velocity of disk is ω0=0 rad/s. The final a...

Q: new rear-wheel drive au ou have been asked to e thout wheels (i.e., the b -c = 1350 kg. The whe 65.0...

A: Given : Mass of the car, mc  = 1350 kg Diameter of the wheel , d =65 cm Weight of each wheel, mw = 1...

Q: Problem 9.9 Consider a planet of mass M and radius R. Assume the planet is spherical and has a const...

A: Gravitational field is the space around a body in which its gravitational pull can be experienced.

Q: A telescope can be used to enlarge the diameter of a laser beam and limit diffraction spreading. The...

A: The minimum angle spread of the width is also called the resolution of the telescopes. The formula i...

Q: A block rest on a horizontal board. the board is gradually tilted upward and the block just begin to...

A:

Q: A thermocouple is a temperature-measurement device that consists of two dissimilar metal wires joine...

A: 1. Given equation is: V(mV) =aexp(bT(°C))Also the given thermocuple is calibrated by inserting its j...

Q: 4) A photon with a wavelength of 0.012 A disappears as it passes around the gold nucleus of an atomi...

A: please see the next step for solution

Q: A nucleus with even-even nucleons in the ground state is subjected to alpha decay. Calculate the a...

A:

Q: (1) Using the Ampere's Law, find the magnetic field of an infinitely long straight hollow wire with ...

A: # NOTE: Thank you for the question. As per the company honor code, we are allowed to answer the firs...

Q: The heater element of a 120V toaster is a nichrome wire with length of 5.4 m, and diameter of .48 mm...

A: First, to find the resistance of the wire by R=ρlA where ρ is resistivity           l is the length ...

Q: Calculate the minimum thickness of an oil slick on water that appears blue when illuminated by white...

A: Given: Wavelength of blue light is 453nm. Refractive index of oil is 1.45. The index of refraction f...