Source A has a half-life of 10 million years, and source B has a half-life of 5 million years. After 10 million years, what percent of each source remains?

Q: QUESTION 9 3.81 ↑ + A= 1.04 4.74 + 4.83 + 1.61 î+ 3.22 Calculate the angle between vectors A and B…

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A: Solution:-

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Q: A projectile with a muzzle velocity of 550m/s is fired from a gun on top of a cliff 460 meters above…

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Q: Compute the potential difference through which an electron must be

A: We know, hcλ=V......................................(1) ANS:D 9.93*10^-16

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Q: as which a liquid will dissolve directly proportional to the partial pressure of the gas .A Henry…

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Q: 1C. The given system of knotted cords (label the left knot as J and the right knot as K) supports…

A: Here A, B, C vectors are showing the direction of tension in A, B, C cords respectively.

Q: A hydrogen atom is 0.53 angstrom in radius. Use the uncertainty principle to estimate the minimum…

A: Uncertainity principle was the first big step towards quantum world. It was this principle which led…

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Q: Calculate the value of work done Force applied on crate=20 N Distance moved by crate3D2.02 m

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Q: Mention an example of a tool and the principle of electrical physics used in the engineering field…

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Q: Calculate the value of work done Force applied on crate=20 N Distance moved by crate=2.02 m

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Q: The probability that a randomly chosen nucleus in a radioactive sample will have decayed in a given…

A: Sample of radio active nucleus decayed = 96.875 %

Q: Q2) Calculate the density of copper, whose building unit is (FCC) type, the length of the edge of…

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Q: Suppose that some object is constrained to move on a straight line as depicted in the sketch below.…

A: a) average velocity for first 5 min =Area under graph till t=5time=12×3×10+2×105=7 m/s

Q: R= 2002 I= 5A V= ???

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Q: Consider a parallel plate capacitor with a plate area of 74.3 cm^2​​​, a plate separation of 0.239…

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Q: What is the final temperature when 22 g of Aluminum at 30°C is placed in 200 g of water at 20°C?

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Q: 4. MILLIKAN EXPERIMENT. An oil drop with a mass of 3.1 x101*kg absorbs 11 electrons, and then falls…

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Q: An electron enters a parallel plate apparatus, as shown, providing a uniform electric field of…

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Q: how to get the I=67.4 if the P = 6 and V=7.4 the answer that i get is 44.4  How to get that 67.4…

A: Given : Power (P) = 6 W Voltage (V) = 7.4 V

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Q: Problem 1: You measure the mass of a ball to be M = 16 kg and its diameter to be d = 1.62 m. Part…

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Q: Problem 8: Tectonic plates are large segments of the Earth's crust that move slowly. Suppose that…

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Q: Find the value of final speed of car Initial velocity=2.05 m/s acceleration=2 m/s2 time=2 s

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Q: 5. The magnitude of the magnetic force of a 68 cm current-carrying conductor with 35 C of charge…

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Q: a. Supposed that this is a motion plot of a car. What is the velocity of the car? b. Supposed that…

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Q: Practicel: As shown below, If D = A + B+C What is the magnitude and direction of D wiuh respect to…

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

Q: 2. Some wire of cross-sectional area 1mm2 has a resistance of 20Q. Determine (a) the resistance of a…

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Q: R1 = 35 Ω, R2 = 20 Ω, and R3 = 15 Ω. The battery supplies an emf of ε = 220V. What is the equivalent…

A: R1= 35 Ω, R2= 20 Ω, and R3= 15 Ω Equivalent resistance, Rs = 35+20+15     = 70 Ω In series…

Q: Determine the direction of the force of the proton. I'll upvote if complete and typewritten. Do not…

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Q: Direction of magnetic force Direction of velocity ХXXXX ХXXXX FM ХXXXX ХXXXX

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Q: Calculate the electrical energy consumed in Joules if a toaster of 86 W is used 250 seconds ?

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Q: A hollow spherical shell has a mass of 8.05 kg and a radius of 0.220 m. It is initially at rest and…

A: We have a spherical shell of mass m=8.05 kg and radius r=0.220 m which is initially at rest (initial…

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Q: Density of sphere=7800kg/m³ and volume of sphere =13cm³,density of mercury=13600kg/m³.what volume of…

A: Given:-  The density of the sphere ρs=  7800 kg/m3 The volume of the sphere V = 13 cm3 The density…

Q: What is the direction of the acceleration of your car when you start backing out of your parking…

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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.