A planetary nebula expands at 32 km/s. How far will it expand (in km) in 0.6 million years?

Q: Achievement happens when you are efficient antenna

A: An antenna does not have an efficiency of 100% due to- dielectric losses conduction losses…

Q: sketch a graph showing how the pressure of a fixed mass of gas at constant temperature varies with…

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Q: Calculate the speed of a ship that travels a distance of 935nm in 5 days and 105 minutes. What is…

A: The distance covered by the ship in time T=5 days 105 minutes, is D=935 nm

Q: Given two particles with Q = 2.40-μC charges as shown in the figure below and a particle with charge…

A: a) Draw the free-body diagram of the system.

Q: The largest possible distance to achieve the line of sight for a system in which the height of the…

A: Given Height of transmitting antenna =hT = 25 m Height of receiving antenna = hR = 36 m Maximum line…

Q: ANOTILA A Fraunhofer diffraction pattern of a single slit of width 0.316 mm is produced using light…

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Q: A radar wave that reaches the target in a time of 2 x 10-4 seconds, the corresponding radar range…

A: Given data The time interval is given as t = 2 x 10-4 s.   As we know that the speed of the wave…

Q: Two charged particles are 7.54 cm apart. They are moved and the force on each of them is found to…

A: In the given question,  Initial separation between two charges (d) = 7.54cm = 7.54×10-2m The charges…

Q: Find the momentum of a body having mass 0.043 kg moving with a velocity 0.033 m/s.

A: Given Mass(m)=0.043 kg Velocity (v)=0.033 ms-1 Required momentum(p)=?

Q: A 10,000 kg airplane must reach a velocity of 60 m/s to take off. If the he rizontal force exerted…

A: given:v=60 m/sF=60 kNm=10000 kg

Q: Q 20) A compound microscope consists of an objective lens with a focal length of (10 mm) and an…

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Q: (a) A spaceship is projected vertically upward from the Earth's surface with an initial speed of…

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Q: 20. Particles A,B,C and D form a square with 4.13cm sides. Particles A and B both have charges of…

A: The following problem is related to the topic Electrostatics. This involves the properties related…

Q: Europa, one of the moons of Jupiter, was discovered by Galileo in 1610. Europa has a circular orbit…

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Q: A hockey puck with a mass of 0.2 kg is sliding along ice that can be considered frictionless with a…

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Q: airplane diving at 36.90° with the horizontal drops a bag of sand from an altitude of 0.800 km. The…

A: Given:-  An airplane diving at 36.90° with the horizontal drops a bag of sand from an altitude of…

Q: Find the momentum of a body having mass 0.043 kg moving with a velocity 0.033 m/s.

A: Introduction :                                                       In this question we are…

Q: A sealed syringe can be used to determine the effects of pressure on a gas. Plunger Closed and Gan…

A: It is a constant temperature process so if we want to decrease the pressure then we have to increase…

Q: ) Two figure skaters, one weighing 625 N and the other 725 N, push off against each other on…

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Q: A rod 12.0 cm long is uniformly charged and has a total charge of -23.0 pc. Determine the magnitude…

A: in this question  we use simple electric field  equation  at axis of rod.

Q: Let a=i-2j-2k and b=6i +31 + 2k; Find? (a) a + b and ab (b)-2a+ (c) The magnitude of a and b (d)āx b…

A: Given:-  a→= i^-2j^-2k^b→= 6i^+3j^+2k^ Find:-  a) a→+b→  and a→-b→ b) -2a→+b→3 c) The magnitude of…

Q: A car with arrangement for water flow is attached to the wall by a spring as shown in figure below.…

A: Given:spring constant is 1.8 kN/m

Q: Members AB and BC can each support a maximum compressive force of 730 lb, and members AD, DC. and BD…

A: in this question  we draw free body diagram of point A and point D . then we get equation  x and y…

Q: A gymnast is to compete in the floor routine (lasting 45sec - 1 min) of her Olympic competition,…

A: Type 2a muscle fibers are fast twitch, which means they can fire more quickly. They are more…

Q: A circuit is pulled with a 21-N force toward the right to maintain a constant speed v. At the…

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Q: Coulomb's law for the magnitude of the force F between two particles with charges Q and Q separated…

A: SOlution: Given that q1 = -11 nC, x1 = -1.715 m q2 = 32.5 nC, x2 = 0 q3 = 48 nC, x3 = -1.235 m

Q: What is the most important physical part of the ISS? Explain how and why. If you use any sources…

A: ISS serves as an orbiting laboratory for the experiments in life sciences, physical sciences , earth…

Q: What friction force is required by a 2000kg car's tires turning around a corner with a radius of…

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Q: The diagram below shows the arrangement of three small spheres, 4, B. and C, having charges of 3q,…

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Q: 4b. -The drag force, F4, acting on a submarine depends on the characteristic length, L, velocity, V…

A: Write the dimensions of the variables. Here, μ is the dynamic viscosity and ρ is the density. Here,…

Q: A coil of wire consists of 20 turns each of which has an area of 0.0015 m². A magnetic field is…

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Q: Why does a freeley suspended magnet always rest

A: Given; Why does freeley suspended magnet always rest in north-south direction ?

Q: A disk, initially rotating at 145 rad/s, is slowed down with a constant angular acceleration of…

A: Given data:  Initial angular velocity (ωi) = 145 rad/s Angular acceleration (α) = -2.29 rad/s2…

Q: On March 20th, 2019, which of the following places did NOT receive oblique insolation? O Mbandaka,…

A: Sun is the ultimate source of energy for earth. The solar energy to a particular area is not…

Q: π →μ +V μ μ

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Q: 5 6. A sample of ideal gas is expanded to twice its original volume of 1.00 m3 in a quasi-static…

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Q: A mass has a charge of q = 5e, where e is the charge on an electron. (a) Determine the electric…

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Q: A buoy floating in the sea is bobbing in simple harmonic motion with period 4 seconds and amplitude…

A: Given:-  Amplitude, A = 11  in Period, T = 4 seconds Displacement, d = −11  in at time t=0…

Q: A uniform electric field of magnitude 340 V/m is directed in the negative y direction as shown in…

A: Given E=340 V/m Along negative y-axis A=(-0.650 , -0.200) B=(0.350,0.200) Required VB-VA

Q: Q/ In figure below, if the friction force between the cable and the pulley is negligible, determine…

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Q: 1) The value normally stated when referring to alternating currents and voltages is the: d) peak…

A: As per guidelines we are suppose to answer one question from multiple questions and three subpart…

Q: The allowed energies of a simple atom are 0.00 eV. 4.12 eV, and 6.44 eV. Y Part A What wavelengths…

A: Emissions and absorption

Q: Q/ If F1 = 250 N and F2 = 375 N are two forces, the angle between F1 and the positive y-axis is…

A: given F1 =250 N 300 from positive y axis  hence vector form of F1 is  F1 →=250sin30 i +250cos 30…

Q: (a) Find the electric potential at A. kv (b) Find the electric potential at B. kv (c) Find the…

A: We know,for the charge Q the electric potential at a distance r…

Q: Directions: Answer the question in not more than (5) sentences. How does the Kinetic Molecular…

A: in this question  we discuss  about kinetic  molecular  theory.

Q: An athlete swims the length of a 41.0-m pool in 15.0 s and makes the return trip to the starting…

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Q: Q/ If F1 = 250 N and F2 = 375 N are two forces, the angle between F1 and the positive y-axis is…

A: Forces, F1 = 250 N and F2 = 375 N The angle between F1 and the positive y-axis = 30° The angle…

Q: Find the pressure Force=33 N Area=2.5 m2

A: We know thatP=FAWhereP=PressureF=ForceA=Area

Q: A particle of mass m carrying a negative charge q passes through a perpendicular magnetic field B al…

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Q: a 0.400 kg ball is shot directly upward at initial speed 76.5 m/s. What is its angular momentum…

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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.