The main-sequence age of a star of 1M⊙ is about 1010 years. What is the main-sequence age of a star of 10M⊙?

Q: 1. A projectile is shot upward at a 60.° angle with the ground at 65 m/s. a) What is the velocity of…

A: equations to solve the problem: Vertical velocity at time t (Vy) = Vy0 - gt Vertical displacement at…

Q: Please answer this within 30 mins ! I will upvote !

A: The charge of the given particle, q=+1mC The velocity of the charged particle, v=1×107 m/s  The…

Q: knowing that an elevation of 3200m above sea level; the pressure is about 70kPa: Explain why the…

A: As the height increase from the ocen surface the pressure decreases, which decreases the boiling…

Q: The position of a particle in millimeters is given by s = 112-23t+t² where t is in seconds. Plot the…

A: Given:-           s = t2 - 23t + 112 m Expression for velocity can be given by ⇒ v = dsdt ⇒ v = 2t -…

Q: A note about rms, which stands for root-mean-square: The rms voltage is a measure of the average…

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Q: A fireman standing on a 3.9 m high ladder operates a water hose with a round nozzle of diameter 1.96…

A: Given, Diameter of nozzle  = 1.96 inch , radius, rn =1.96 inch2 =0.98 inch Diameter of pump outlet…

Q: A star with a radius 1.5 times that of the Sun has a surface temperature T=9,000 K. Calculate the…

A: The surface temperature of the star, T=9000 K The luminosity of the Sun, LS=3.84×1026W The radius of…

Q: If a 0.019 C charge is moving perpendicular to a 0.9 T magnetic field at 465 m/s, find the force on…

A: Part (a) Given that,  Charge on a particle, q=0.019 C Magnetic field, B=0.9 T Moving speed of the…

Q: Part B What is the final potential difference on capacitor C₁? Express your answer to two…

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Q: The uniform electric field between two charged parallel plates has a magnitude of 4400 V/m (note…

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Q: As shown in the figure below, two masses m, 5,50 kg and my which has a mass 60.0% that of my, are…

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Q: torque on the rod

A: Given: Length of rod is l=4.1 m One end of rod is at the origin. A force  F=5 N is applied at point…

Q: Consider a glass of 169 mL of water at 27°C. Calculate the mass of ice at -15°C that must be added…

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Q: Three long, straight wires are seen end-on in the figure below. The distance between the wires is…

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Q: Consider the two parallel wires as illustrated below that both carry a current of (2.5x10^0) mA…

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Q: A copper wire of radius a = 0.256 mm has an aluminum jacket of outer radius b = 0.337 mm. There is a…

A: a) To find the current in the copper wire, we can use the formula for resistance of a cylindrical…

Q: Suppose a 5.81mC charge moves with velocity 222.33 m/s at an angle of 23.57∘ relative to the…

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Q: Consider a collision in one dimension that involves two objects of masses 4.5 kg and 6.2 kg. The…

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Q: Concentric conducting spherical shells carry charges Q and -Q, respectively (see below). The inner…

A: Required  electric electric field at specific regions for the given system.

Q: F m

A: Given: Mass of magnet, m=4.27 kg Force on the magnet, F1=83.5 N

Q: A push of magnitude P acts on a box of weight W as shown in the figure. The push is directed at an…

A: Given, The diagram, The push force acting on the block is P,

Q: n the circuit of the figure = 2.80 kV, C = 7.80 µF, R₁ = R₂ = R3 = 1.05 MQ. With C completely…

A: a) i1= 1.78 mA   b) i2= 0.889 mA   c) i3= 0.889 mA   d)  i1=1.33 mA   e)  i2= 1.33 mA   f)  i3= 0 A…

Q: Suppose a 9.0 volt battery supplies (moves) a total of 7000 C of charge. What is the energy output…

A: Given voltage of battery (V)=9.0 Volt Charge(Q)=7000 C

Q: A rock is propelled upward from the top of a building 200 feet tall at an initial velocity of 136…

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Q: height at time t (in seconds) of a mass, oscillating at the end of a spring, is  s(t) = 300 + 58…

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Q: A dockworker applies a constant horizontal force of 87.0 N to a block of ice on a smooth horizontal…

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Q: I) A revolving door consists of a four identical panels mounted to a solid column. Each panel has a…

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Q: a skydiver accelerate downward at 8m/s2 during the first second. Her weight is -540N. The net force…

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Q: A 5 kg block of wood resting on a platform was hit by a 0.08 kg of bullet travelling upward with a…

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Q: current through the 4W and 60W bulbs running on a house voltage of 120V

A: Given: Voltage is V=120 V Power of bulb 1 is P1=4 W Power of bulb 2 is P2=60 W Note: 1 A=1000 mA…

Q: 7. A uniform ladder of mass (m) and length (L) leans against a frictionless wall, see figure. If the…

A: Answer the following question is

Q: (4 blanks) An ice-making machine operates in a Carnot cycle. It takes heat from water at 0.0 °C and…

A: Given: Cold temperature, TC=0°C=273.15K Hot temperature, TH=24°C=297.15K Mass of water, m=85.0 kg

Q: An equal-mass binary star system (M₁ = M₂) has an orbital period of 6 months and a semimajor axis of…

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Q: In the figure the ideal batteries have emfs E₁ = 4.89 V and E₂ = 10.2 V, the resistances are each…

A: Given          The emf of the battery 1, ξ1 = 4.89 V            The emf of the battery 2, ξ2 = 10.2…

Q: A student stands at the edge of a 73.0-m cliff and throws a stone horizontally over the edge with a…

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Q: Tarzan swings on a 39.0 m long vine initially inclined at an angle of 42.0° with the vertical. The…

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Q: Three identical charges (q = −7.3 ?C) lie along a circle of radius 3.9 m at angles of 30°, 150°, and…

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Q: When a wave travels through a substance, the wave transfers its energy to the _______ ________.

A: Wave: Wave is a flow of energy through a medium. There are two types of waves namely longitudinal…

Q: Wavelength is 438.4 nm (or 438.4 *10^-6 m) Angle it theta= 20 degrees m=1 d= 1281.8 nm (or 1.2818…

A: Givend = 1.2818 × 10-6 m

Q: Label the information that you know about each part of the diagram, and identify what you are trying…

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Q: The speed of sound in air is measured at 335 m/s. The frequency of the sound at the source is 375…

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Q: Express the density (p) in g/cm³ of a 3.5-kg object whose volume (V) is 0.0657 m³. Conversion…

A: Given: Mass (m) = 3.5 kg  Volume (V) = 0.0657 m3

Q: 1. A particle is confined in a region 0≤x≤ and has a wavefunction of the form = Ne-xa (a) Normalize…

A: Since you have posted multiple questions with multiple sub parts, we will provide the solution only…

Q: 1. A particle is confined in a region 0 ≤ x ≤ ∞ and has a wavefunction of the form Ne-xa (a)…

A: Since you have posted multiple questions with multiple sub parts, we will provide the solution only…

Q: a hockey pucktravels a displacement of 3.4 m/s ( S 30 degrees W). It then struck by a hockey players…

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Q: 2. Three point charges are located along the x-axis. Point charge q₁=+3.5 X10-6 C is at x=0, point…

A: According to guidelines we need to solve only first question kindly repost other questions in the…

Q: In the given figure below, both masses m1 and m2 are attached with a string. Mass m1 is moving on…

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Q: b. The figure below shows the circular paths of two particles that travel at the same speed in a…

A: Let the mass of electron = m Let the mass of proton = M Let the speed of electron = v Let the speed…

Q: Consider a symmetric slab waveguide, of core index = 3.6, and cladding/substrate index = 3.55. The…

A: When a question with multiple subparts is given then, according to the guidelines, only the first…

Q: 6. A 150 kg uniform beam is attached to a vertical wall at one end and is supported by a cable at…

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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.