An asteroid moving with velocity v is moving towards a star from a very far point. The impact parameter in this case is b. The mass of the star is M and radius of the star is R. Calculate the minimum value of b for which the asteroid will miss the star. (m<

Q: What multiple of the energy needed to escape from Earth gives the energy needed to escape from (a)…

A: Solution           Energy needed to  escape a planet of radius R, and     mass M is given as…

Q: A spacecraft in the shape of a long cylinder has a length of 100 m, and its mass with occupants is 1…

A:

Q: Randomized Variables n = 1.1 x 10° kg == 25 km/s > A 50% Part (a) Find the relativistic momentum of…

A:

Q: why is G considered to be the same throughout the universe?

A:

Q: The energy to move a rocket (mass m) infinitely far from the Earth (Radius R and mass M) 00 GMmdx E…

A:

Q: How much mass had to be converted into energy to produce the 50-Megaton detonation of the Tsar Bomb…

A:

Q: A spacecraft (mass = m) orbits a planet (mass = M) in a circular orbit (radius = R). What is the…

A: The spacecraft has to be sent to infinity in space where the gravitational force on the spacecraft…

Q: Observations of neutrinos emitted by the supernova SN1987a place an upper limit of 20 eV on the rest…

A: The value of Lorentz factor is,

Q: What is the conceptual difference between g and G?  Besides their numerical values,

A: g is the acceleration due to gravity which is expressed in m/s2. G is the universal gravitational…

Q: Suppose a droplet of unknown mass remains suspended against gravity when E. = -2.10 × 10 N/C. What…

A: Given,  Electric field ,Ey =-2.10×105 N/C Acceleration due to gravity , g = 9.8 m/s2 Minimum charge…

Q: what would be the magnitude of the acceleration due to gravity in meters per second squared at the…

A:

Q: A supernova explosion of a 2.00 x 1031 kg  star produces 1.00 x 1044 J of energy. What is the ratio…

A: The expression for find change in mass is ∆m=Ec2 Substitute values in the above equation…

Q: In a laboratory, the life time of a particle moving with speed 2.8*10^(10) cm/s is found to be…

A: Given information: Velocity of the particle v=2.8×1010 cm/s. Life time of the particle t=2×10-7 s.

Q: Two students of opposite sex with masses 70.0kg and 52.0kg respectively are sitting 1.50m apart…

A:

Q: What multiple of the energy needed to escape from Earth gives the energy needed to escape from (a)…

A: mass of earth = 5.98×1024 kg Mass of moon = 7.36×1022 kg mass of Jupiter = 1.90×1027 kgRadius of…

Q: Why observer cannot make readings using a vernier without first determining its least count?

A: Vernier caliper is used to measure the thickness of any kind of object accurately.

Q: The speed of light is 3 × 108m/s. The Sun has a mass of 2 × 1030kg. a). If all of the Sun’s mass…

A: a) For an object orbiting around Sun with orbital velocity c:   Centripetal force =mc2Rwhere m is…

Q: Our solar system orbits the center of the Milky Way galaxy. Assuming a circular orbit 30,000 ly in…

A: The time period of revolution is given by, T=2πrv Here, r is the radius of the orbit and v is the…

Q: A spacecraft in the shape of a long cylinder has a length of 100 m, and its mass with occupants is 1…

A:

Q: What is the conceptual difference between g and G?

A: Acceleration due to gravity (g) = 9.8 ms2Universal gravitational constant (G) = 6.67×10-11 Nm2kg2

Q: A spacecraft in the shape of a long cylinder has a length of 100 m, and its mass with occupants is 1…

A: Given, Length of cylinder = 100 m Its mass with occupants is 1050 kg  The distance between the nose…

Q: A supernova explosion of a 2.00×1031 kg star produces 1.00×1044 kg of energy. (a) How many kilograms…

A:

Q: separation

A:

Q: neutral pion moving with velocity v decays into to photons; one photon of energy E1 travelling in…

A: E1 = 2E2 we have to find v  The direction of two-photon are equal and opposite

Q: The following is the equation for Wien displacement 2T = ?. Determine the value "?". A. 5.67 x…

A:

Q: How to solve for K(J) with a given mass, velocity, height, Ugrav and speed? Given: mass=0.3…

A: Given: The mass of the object is 0.3 kg. The velocity of the object is 0 m/s. The height of the…

Q: If G is given by 6.67 X 10-11 and the mass of the Sun is 1.98 X 1030 kg, what would be the radius of…

A: Given:- If G= 6.67 X 10-11 the mass of the Sun is 1.98 X 1030 kg A black hole is an object for which…

Q: The escape speed from a black hole would be greater than the speed of light. If the impact time of…

A: to choose : True and false for given statements

Q: 1. Radionuclide has a lifetime of 1x10^(-5) when measured at rest. how far does it take before…

A:

Q: Suppose that you have found a way to convert the rest energy of any type of matter directly to…

A:

Q: Applying Newton's second law, f = ma yields F = ma. for each star. Mv2 (2r)2 GMM Solving for the…

A: Since, You have only asked bout the calculation part M=2v3TπG Here, "v" is the velocity that is…

Q: A spaceship of mass 800,000 kg at a distance of 50,000 km above Earth's surface is accelerating away…

A: From Newton’s second law of motion, the expression for the net force acting on the rockets is:

Q: A mass of 5 kg is 100m above a given datum where local g = 9.75 meters per second square. a.Find…

A: Answer :-   Given  m = 5 kg  g = 9.75 m/s 2 h = 100 m

Q: A supernova explosion of a 2.00×1031 kg star produces 1.00×1044 J of energy. (a) How many kilograms…

A: a)

Q: Plaskett's binary system consists of two stars that revolve in a circular orbit about a center of…

A: v = 190km/s= 190000 m/sT = 12.9 days  = 12.9 * 86400 sec  = 1114560 seconds Using formula , V * t =…

Q: Under some circumstances, a star can collapse into an extremely dense object made mostly of neutrons…

A: Concept This is the case of the conservation of the angular momentum of the system. In this case,…

Q: A spacecraft (mass = m) orbits a planet (mass = M) in a circular orbit (radius = R). What is the…

A:

Q: A spacecraft reaches the SO1 of a planet with Vo = 500 m/s, o : -65°. Use rsoi 5.781 x 108 m,…

A:

Q: What is the speed required to escape 3AU from the sun?

A: To find  the speed required to escape 3AU from the sun.

Q: Supposing that the time taken by the projectile to reach the wall is t = 0.75sec, the angle of…

A:

Q: The population P of a bacterial colony increases at a rate proportional to P. If at time t = 0, P =…

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.