18. The number 235.051 is the sum from adding 14.3 + 0.001 + 220.75, following the rules in significant numbers it will give: * O 235.051 O 235 O 235.05 O 235.1

Q: How much energy would be required to break a helium nucleus into its constituents, two protons and…

A: mass of neutron, mn= 1.00867 u  mass of proton, mp = 1.00783 u  mass of helium, mHe = 4.00260 u

Q: of 10 the relation between the hiegt h and the square of the horizantal range D2 in projec…

A:

Q: How many Significant digits are in the following? 1) 956044 2) 2.1390 3) 043900 4) 0.00500 5) 3500…

A: 1. The significant digit in 956044 is 6 as this is 6 digit number. So, the significant digit in this…

Q: A boat takes 3.00 hourshours to travel 50.0 kmkm down a river, then 6.10 hourshours to return. How…

A:

Q: For each of the following, carry out the mathematical operation and report answers in scientific…

A: According to question we need to solve mathematical problems.

Q: e2f h, where g= 4 e =7.83±0.04 f= 0.204±E0.007. h=14.14±0.05 and i = 3.99±0.03- Given the equation…

A: Given:  g =e2f4-h2ie = 7.83±0.04f = 0.204±0.007h = 14.14±0.05i = 3.99±0.03

Q: In an experiment, physics student' s measured value two dimensions (A) and (B). If A = 3.56 0.04 and…

A:

Q: is the Hawking equation that describes radiation from black holes: TAkc3 2hG Where: S- entropy (J/K)…

A:

Q: 2. How do you express these numbers in exponent of +/-4 & having a base 10? (eg exponent of +/-2,…

A:

Q: 3. An atom of oxygen has a mass of 16 u (atomic mass unit), and an atom of hydrogen has a mass of 1…

A: We are authorized to answer one question at a time, since you have mentioned 3 and 5 question  you…

Q: 4He) and a 234Th nucleus. If the alpha particle moves off at 22 degrees above the x axis with a…

A: A) applying conservation of momentum In X direction 238 * 4.8×105 = 4 * 2.0×107 * cos24 + 234 * Vx…

Q: 3) A train is composed of 47 freight cars, a caboose, and an engine. The engine is 25.5 m long, the…

A: (3) Given: The length of the engine is 25.5 m. The length of the caboose is half the length of the…

Q: 20. v How many significant figures are in the following numbers? (a) 78.9 ± 0.2 (b) 3.788 × 10º (c)…

A: Given  To find out the significant figures

Q: 2506025 J seems like a bit of a big number how is this possible?

A: Given Data, Mass of the first car(m)=950 kg Initial Speed of the car (v1)=35 m/s Final Speed of the…

Q: What is the value of x? Use SOH CAH TOA 21° 22 O 9.00 O 20.0 O 7.88 5.94

A:

Q: Can you please answer number 7 I put all of the values in so you can solve it now

A: We are multiplying by 3. The number 3 has only one significant digit Answers must also have one…

Q: What is the result of the equation: 1.22 * 3.2/ 10.1098 + 2021.1 with the correct number of…

A: Let A = 1.22×3.210.1098+2021.1 Applying the BODMAS rule, we first divide, then multiply and finally…

Q: 1. A person on a diet might lose 2.3 kg per week. Express the mass loss rate in milligrams per…

A:

Q: ½mv.? + mgh: + w = ½mv:? + mgh: m = 3.50 kg V: = 9.91 m/s h: = 4.89 m V: = 5.20 m/s h: = 3.33 m w =…

A: Given, mass, m = 3.50 kg Initial Velocity, V1 = 9.91 m/s Final Velocity, V2 = 5.20 m/s initial…

Q: how do you solve for V in this equation F=1/2mv^2

A: Consider the given equation.

Q: Which is larger, 1 C° or 1 F°? Explain why

A:

Q: The density of mercury is 13,600 kg/m³ at 0°C. What is the density of mercury at 200° C? Express…

A:

Q: 4. Given the final tableau, enter the solution as stated in the instructions. y w Constants -23/5…

A: The given problem has a unique solution

Q: 20. Carry out the operation. Express the answer by rounding it off to the correct significant…

A:

Q: How much energy is contained in 0.525 g of matter? Recall the speed of light c = 3.00 * 10 ^ 8 * m /…

A: Given data:   Mass (m) = 0.525 g = 0.525×10-3 kg Speed of light (c) = 3.00×108 m/s Required:  The…

Q: 8+ 7+ 6+ 5 4 3 2+ 1+ ||ū|| = 1 2 = 3 → 4 » 5 6 7 Find the magnitude of u. Enter an exact answer as…

A: A vector is a quantity having direction as well as magnitude.

Q: State how many significant figures are proper in the results of the following calculations: (a)…

A: solution as

Q: 3.9 x 10^-2, 3.9 x 10^-3, 9.3 x 10^-3 b) 3.9 x 10^-3, 3.9 x 10^-2, 9.3 x 10^-3 c) 3.9 x 10^-3, 9.3…

A:

Q: When a particle decays, it splits into two different particles and each is shot off in opposite…

A: Here given the uranium 238 split into thorium 234 and He4. The speed of emergent alpha particle is…

Q: Earth has a mass of 5.98 × 1024 kg. The average mass of the atoms that make up Earth is 40 u. How…

A: Given,Mass of earth, ME = 5.98X1024 kgAverage mass of atom, M = 40 u1 u = 1.66 X 10-27 kg

Q: Let À = 3.92i + 4.41j and B = -3.02i + -2.43j. What is the angle between À and B measured in…

A:

Q: •34 The speeds of 22 particles are as follows (N, represents the number of particles that have speed…

A: a) The required average velocity is, b) The required rms velocity is,

Q: QUESTION 10 Which of the following physical quantities is not fundamental? a. 3.0 years Ob. 1,200 kg…

A:

Q: Assume = 36 and H = 4. Determine the x-component of H.

A: Given: The angle is alpha = 36 degree The magnitude of the vector H = 4 units

Q: Earth has a mass of 5.98*1024 kg.The average mass of the atoms that make up Earth is 40 u. How many…

A: Given : mass of the Earth, ME = 5.98*1024 kg            Average mass of atoms, m = 40 u

Q: Calculate the following to the correct number of significant figures. Assume arbitrary units (u).…

A: Since you have posted a question with a multiple sub parts, we will solve first three sub - parts…

Q: Make the conversion of 2.4 Km/h2 to m/s?. O 6.67 E(-4) 1.85 E(-4) O 1.85 E(-7) 0.67 1.5 Question 2…

A: 1. Given data The acceleration is given as v = 2.4 km/h2.   Now, the conversion km/h2 from m/s2…

Q: Acceptable values for magnitude given one component Ux=-17. Which of the following COULD NOT be the…

A:

Q: 15. (a) Suppose that a person has an average heart rate of 72.0 beats/min. How many beats does he or…

A: The average heart rate is, N=72 beats/min

Q: 8. The density of diamond, a form of carbon, is 3520 kg/m'. If the atomic mass of carbon is 12.011…

A: The density of a diamond is, ρ=3520 kg/m3 The radius of a diamond sphere is, r=0.0125 m The atomic…

Q: Solve the system of equations below to find x, assuming that a=2.39, b=343, and c=2.2. z + 4y = a z+…

A:

Q: * In questions 6, 7, find the missing length 6. 7. 10 12

A: 6) Hypotenuse = ?  Base = 12 Perpendicular = 5   From the Pythagoras theorem, we have   7)…

Q: (II) (a) How many seconds are there in 1.00 year? (b) How many nanoseconds are there in 1.00 year?…

A: (a)   From the unit conversion, the seconds in 1.00 year can be determined as, 1 year=1 year=1…

Q: =v02+2ax. The problem requires solving for xx, and the known values for the system are…

A: We know that the above in the question an equation is given as  v2= v02+2axit is the third equation…

Q: SCIENTIFIC NOTATIONS Write only the number for your answer. Do not include the unit. 1.…

A: Since you have posted a question with a multiple sub parts, we will solve first three sub - parts…

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.