What is the area, in square meters, of 12 m telescope? ______ m^2

Q: A bicycle tire accelerates uniformly from rest to 3.89rad/sec in 9.0 s. Calculate how many radians…

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Q: An aircraft is moving horizontally with a speed of 50.0 m/s. At the height of 1.50km, an object is…

A: Given that: VH=50 m/sVV=?g=9.8 m/s2h=1.50 km= 1500 m

Q: Suppose that the mass in a mass-spring-dashpot system with m=20, c-19 and k 3 is set in motion with…

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Q: Which of the following is NOT true for a parallel circuit? The total current is equal to the sum of…

A: In parallel circuit Total current is equal to the sum of current through each load  Voltage across…

Q: NASA is expected to send a 2600-kg satellite 450 km above the earth’s surface. (a) What is its…

A: mass of satellite (m) = 2600 kg altitude of satellite above the surface of earth (h) = 450 km

Q: The snow leopard (Uncia uncia) is an endangered species that lives in the mountains of central Asia.…

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Q: What is the average speed of a bunny rabbit when she hops 6 meters to the east across the room in 11…

A: Given data :  Distance travel by rabbit ( d ) = 6 meter  Time taken by rabbit ( t ) = 11 second…

Q: 1.) Given: V(d). (C₁ 2010)(1+ 2 a) E=0. b.) F >0 c) € 20 d) { co d2 What is the behaviour of the…

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Q: 6. Find the voltage across the battery for the following circuit. Note: The battery corresponds to…

A: In this question we have to find the voltage across the battery. Please give positive feedback if…

Q: The figure below shows two tiny charged spheres q1 = +5 µC and q2 = −7.5 µC separated by 8.0 cm. a)…

A: Given Charge, q1=+5μC,q2=-7.5μC, q3=-3.mC Distance, dq1-P, dP-q2=4.0cm=0.04m According to Coulomb,…

Q: A rubber ball is shot straight up from the ground with speed vo. Simultaneously, a second rubber…

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Q: A box is at rest on a level floor. μ = 0.4 and μ = 0.3. You pull the box horizontally just hard…

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Q: 11. The potential in a given region is V = 2x + x² y. Find the electric field at x = 3, y = 1, z =…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: If an airplane travels 60.0° north of east for 145 km, how far east and how far north did it travel?…

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Q: A quantity of gas is confined to a cylinder with a movable piston. Then 1,300 J of heat is expelled…

A: Given  Heat expelled (Q) = -1300 J  Work done (w)  = +900 J  From first law of thermodynamics…

Q: Block 1 (0.5 kg) travels with an initial velocity of [ 40i ] + [ 40j ] m/s and then collides with…

A: m1 = 0.5 kg u1→ = 40i^ + 40j^ m/s m2 = 0.5 kg u2→ = -40i^ -40j^ m/s final momentum of first block =…

Q: An airplane used to drop water on brushfires is flying horizontally in a straight line at 315 km/h…

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Q: The x-coordinate of a particle in curvilinear motion is given by x = 6.0t3 -4.2t where x is in feet…

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Q: cheetah can accelerate from rest to 23.5 m/s in 2.00 s. Assume that the acceleration is constant…

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Q: A car travels 10 m/s east. Another car travels 10 m/s north. The relative speed of the first car…

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Q: A powerful motorcycle can accelerate from rest to 28.8 m/s (64 mi/h) in only 4.90 s. (a) What is its…

A: Given:-  The velocity of motocycle is v = 28.8 m/s  Time t  = 4.90 sec  Find:-  a) what is its…

Q: wo transverse waves travel along the same taut string and interfere. Waves 1 and 2 are described,…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: A ball tied to a string is swung around in a horizontal circle. Which one of the following…

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Q: magine you are stuck on a deserted island and have a box of lenses with you. If you wanted to start…

A: There are essentially two kinds of lenses, first: Concave, second: Convex

Q: . A long straight wire is carrying a current of 2.4 A in a region where the magnetic field is…

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Q: 16. The moment of inertia ("rotational mass") of a propeller on a car is 6.67 kg m2. Calculate the…

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Q: 3. If the magnetic field from a current-carrying long straight wire has a magnitude 0.5 mT at a…

A: We have a current carrying straight wire and the magnitude of magnetic field at a distance R from it…

Q: Three identical blocks connected by ideal (massless) strings are being pulled along a horizontal…

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Q: A box with mass m = 1.5 kg is sliding with a speed of 4.0 m/s on a horizontal surface. When at x =…

A: Given that: m=1.5 kgv=4 m/sf(x)=-(10+40x) Nd=?Wf=Work done by friction

Q: Suppose you first walk A = 11.0 m in a direction 0₁ = 17° west of north and then B = 24.5 m in a…

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Q: Tim and Rick both can run at speed or and walk at speed vw, with vr > vw. They set off together on a…

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Q: As shown in the picture, the voltmeter is connected O in parallel to the power supply in parallel to…

A: Option a is correct

Q: A 250N crate is pulled up a ramp that is angled at 20 degrees above the horizontal. If the…

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Q: Two waves of the same frequency have amplitudes 1.00 and 2.00. They interfere at a point where their…

A: Amplitude, a1 = 1.00 Amplitude, a2 = 2.00 Phase difference, Φ = 60° Resultant amplitude, A = ?

Q: A metallic wire of uniform cross-section and resistance R is bent into a circle of radius a. The…

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Q: A 58.0-kg projectile is fired at an angle of 30.0° above the horizontal with an initial speed of 128…

A: Given:-  The mass of the projectile  is m= 58 kg  The angle at which the projectile fired is θ= 30°…

Q: In what resistor will the largest potential difference be measured?

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Q: The CMB contains roughly 400 million photons per m³. The energy of each photon depends on its…

A: Mass = E/c2

Q: Which of the following formulas relating temperatures on the Celsius and Fahrenheit scales is…

A: The formula to convert Celcius to Fahrenheit scale is as follow

Q: We need to estimate the temperature at recombination from the figure below. (Estimate a temperature…

A: From the graph, the temperature at the recombination i;

Q: calculate the centripedal force of a vehicle of 2000kg that rotates a curve of 175m radio at a speed…

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Q: Situation: A.71-kg billiard ball moving at 2.5m / s in the x-direction strikes a stationary ball of…

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Q: Rain is falling at the rate of 2.5 cm/h and accumulates in a pan. If the raindrops hit at 8.0 m/s,…

A: Pressure is the force experienced on a particular area. The force is defined by Newton as rate of…

Q: A cargo of 2 Kg on a frictionless ramp is connected (by a cord that runs over a pulley) to a spring…

A: in this question  we draw free body diagram of that situation.

Q: A girl sitting on a L = 2 m long swing is pulled backward by her father, making an angle of 32…

A: Given Data: L=2 m  θ = 32 degrees h=L(1-cosθ)

Q: NO 4. End A of the bar AB in Fig. P11.53 rests on a fric- tionless horizontal surface, and end B is…

A: Given:-  We have given a figure as the end of bar AB is in rest on a frictionless horizontal…

Q: The normalization PIB model with box size of 5.27 nm is constant (in Sl units) for a O a. 23859 O b.…

A: Given : Size of box , a = 5.27 nm  Find : Normalization constant ( in SI Units ) for PIB model

Q: For the following forcing inputs, assume u(0) = 0 and u(0)=0. Use Duhamel's Integral to find the…

A: For the given question, it is suggested we use principle of superposition. This states that The…

Q: 6. Water has a specific heat of 4184 J/Kg°C. Ethanol has a specific heat of 2440 J/Kg°C. What…

A: Given data :  Specific heat of water ( cw ) = 4184 J/kg°C  Specific heat of ethanol ( ce ) = 2440…

Q: A object is shot vertically upward with an initial speed of 5 km/s . If there is no atmosphere, the…

A: Given data :            Initial speed of the object (u) = 5 km/s = 5000 m/s

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.