If a 1.40 MSun neutron star has a radius of 10.0 km, what is the radius (in km) of a 2.15 MSun neutron star? (Use the mass-radius relationship  R ∝ M−1/3)

Q: Does diffraction also occur on sound? Does it behave like a wave? Why?

A: Does diffraction also occur on sound- (YES) Explanation : This is due to diffraction, bending, and…

Q: Lere Hoe and Lee nd Oba Assume that a 10 cm focal length converging lens is placed in combination…

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Q: Is it feasible to maintain a constant speed while accelerating? What is this sort of motion called?

A: Yes, it is possible for an object to maintain a constant speed while accelerating.

Q: An object is launched vertically downward at a speed of 30 m/s from a height of 3 km. What is its…

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Q: given to your body when 0.4 kg of steam condenses on your skin? b). If the same amount of energy…

A: a) We know that we have given that the mass of the steam m = 0.4 kg is Condenses on your skin.  We…

Q: Potential difference between two points of a wire carrying 20 amperes Current is 1.9 volt .…

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Q: What is the rms speed of nitrogen molecules contained in a 13^(3)m volume at 4.2 atm if the total…

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Q: 3. What fraction of a piece of iron will be submerged when it floats in mercury? 4. A nozzle with a…

A: 3.  When an object is submerged into fluid, the object experiences the buoyancy force provided by…

Q: a) what is the length of the unknown side, b) the tangent of θ, and c) the sine of φ?

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Q: 7) Find the wavelength of the photon as an electron makes a transition from n=4 to n=3. for particle…

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Q: Problem 5: A student notices that the image produced from a large concave mirror of a distant…

A: Solution:-

Q: Converging lens has 14.0 cm focal length. What is the focal length of the diverging lens? 30.0 cm…

A: GIVEN: focal length of converging lens f=14 cm

Q: (a) Determine a differential equation for the velocity v(t) of a massm sinking in water that imparts…

A: Given that: Mass of the object=mVolume of object=VDensity of water=ρAcceleration due to…

Q: ball is held 480 cm in front of a plane mirror. The distance between the ball and its image is: 1.…

A: The distance of image from mirror is equal to distance of object from mirror

Q: Potential difference between two points of a wire carrying 20 amperes Current is 1•9 volt .…

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Q: **19 Figure 30-47 shows two parallel loops of wire having a common axis. The smaller loop (radius r)…

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Q: Part A Find the fundamental frequency and the frequency of the first three overtones of a pipe 45.0…

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Q: A rickshaw puller pulls the rickshaw by applying a force of 160 N. If the rickaw moves with constant…

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Q: Given the combination of resistors below: R2 V R6 R3 RA R5 If R1 = R2 = R3 = R4 = R5 = R6= 14 Q, and…

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Q: Consider the following. (a) Find the angle ? locating the first minimum in the Fraunhofer…

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Q: R2 + R6 R1 R3 RA

A: R1 = R2 = R3 = R4 = R5 = R6= 14 Ω,  and voltage = V = 15 V

Q: The magnetic field has been measured to be horizontal everywhere along a rectangular path x- 25 cm…

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Q: A small chunk of dry ice (solid carbon dioxide) at 195 K is added to a thermally insulated…

A: When a metal at a high temperature is added to a thermally insulated container with another metal at…

Q: If the air temperature is the same as the temperature of your skin (about 30° C), your body cannot…

A: Solution:- Energy Q= 505 W= 505 joule/sec =1818000 joule/hr Q'=76% of Q= 1818000×0.76=1381680 J/hr…

Q: Potential difference between two points of a wire carrying 20 amperes Current is 1.•9 volt .…

A: Current flowing in wire (I) = 20 A  Potential difference between two ends of wire = 1.9 volts

Q: Consider a 0.63 kg sample of metal at room temperature of 20 deg C. The addition of 642,000 J…

A: Given data:  Mass (m) = 0.63 kg Initial temperature (Ti) = 20 °C Heat addition to increase the…

Q: Activity 3. Magnetic Properties Instructions: Using the electronic Configuration, which of the…

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Q: P2 657°C Isothermal 2.0 atm 37°C V(L) V3 The figure (not to scale) shows a pV diagram for 2.1 g of…

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Q: Select all that apply.

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Q: 2) Wavelength light 470 m passes through a double slot. The figure Interference is observed on a…

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Q: How much would you age in traveling a distance of 5.39 light years from earth if you were able to…

A: Speed is the ratio of distance and time. To find the travelling time we must know travelling speed…

Q: Compared to the speed of a 400 Hz sound through water, the speed of a 200 Hz sound through water is…

A: Sound wave requires a medium to travel since it is a mechanical wave. The wave is characterized by…

Q: A point charge of -3.00 micro Coulomb is located in the center of a spherical cavity of radius 6.50…

A: The point charge is Qc=-3.00 micro Coulomb=-3.00×10-6 C The radius of the spherical cavity is r=6.50…

Q: An electron moving at 4.00x10-m/s in a 1.25-T magnetic field experiences a magnetic force of 8.0…

A: Answer:-  Given  Velocity (V) = 4.00 × 103 m/s  Magnetic field (B) = 1.25 T  Magnetic force (F) =…

Q: 2. Two masses are attached to a uniform meter stick as shown in the figure 2. The masses of m1 and…

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Q: A very myopic man has a far point of 18.0 cm. What power eyeglasses (in diopters, held 1.47 cm from…

A: To correct this defect we have to insure that the far point for the person should be at infinity So…

Q: 30. Base your answer to the following question on the diagram below which represents an electric…

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Q: Liquid water turns out to have a higher density at 4C degrees than at any other temperature. What…

A: Thermal expansion coefficient describe the relation between the size of an object and change in the…

Q: Fraunhofer diffraction pattern of a single slit of width 0.294 mm is produced using light of…

A: angle subtended by the central diffraction maximum is= 0.0009215 rad.

Q: A particle was subjected to a force Fx that varies with position as described by the Fx vs. graph…

A: Given data:  Force vs position graph Required: Work done by the force from x = 0 m to x = 10.0 m

Q: A uniform disk of radius R=38.0 cm and mass m=3.20 kg is punctured at point O, which is 0.230 R from…

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Q: curved required not required free-falling objects heavier objects straight Types of Motion Aristotle…

A: Horizontal Motion According to Aristotle, force (pushing/pulling) required to keep an object in…

Q: Part A You have 10 m of 0.49-mm-diameter copper wire and a battery capable of passing 12 A through…

A: Given 10m of 0.49cm copper wire and S battery capable of passing 12A through the wire.  We have to…

Q: A convex lens is placed on a flat glass plate and illuminated from above with monochromatic red…

A: A convex lens is placed on a flat glass plate and illuminated from above with monochromatic red…

Q: Determine the range of the resistance for the resistor shown below:    Lower limit:  _________ Ω…

A: A resistor is a electric component that has got a simple function: convert electrical work in heat.…

Q: G Both spheres are positive. D) Both spheres are negative F. A charged particle is located in an…

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Q: An aircraft engine takes in 8900 JJ of heat and discards 6700 JJ each cycle. Part A. What is the…

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Q: 1) A metal has threshold frequency 10^15. Calculate the maximum kinetic energy of the ejected…

A: Part (1): Given: The threshold frequency of the metal is 1015 Hz. The wavelength of the beam is…

Q: Part A - Practice Problem: Determine the gauge pressure for a 1.0-cm-diameter faucet located next to…

A: The gauge pressure for a 1.0 cm diameter faucet is 4.27 atm or 4.27 x 10⁵ Pa

Q: In the figure below, mA = 1.50 kg and mg = 0.50 kg and the table surface is frictionless. If the…

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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.