One hundred milliliters of water has a mass of 100 grams. What would be the mass of 50 milliliters of water? a. 50 grams b. 100 grams c. 25 grams d.200 grams

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Q: A substance has a molecular mass of 117234 u. Find the mass of one molecule of this substance.

A: here, molecular mass(M) = 117234 u

Q: Question 3/ Calculate the density of the nuclear substance of the nucleus of the Carbon-12 atom, if…

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Q: 40. Balance the following equation: 239- Th 90 239 U 239 94 2381 94 Pu 239 93

A: Given data:  N93239p → .....+ e-10 Required: Balance the equation

Q: Q8/ If the mean number of atoms in a system is 4.4x1020 atoms, each atom has energy of -3.4eV, the…

A: Given:Numer of decay of this energy = 8Number of atoms = 4.4×1020 atomsSolution:We know that:Average…

Q: DIFFERENTAL EQUATION: GROWTH AND DECAY, NEWTON'S LAW OF COOLING AND DILUTION/MIXING PROBLEMS. Show…

A: From the question, it is given that- Initial temperature: Ti = 24oC = 24+273 = 297 KSurrounding…

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Q: What is true? about matter and energy 1.matter is made of atomes and molecules that are constantly…

A: Matter:- The term "matter" broadly refers to any "physical substance."  Instead of being a…

Q: Question 3: a. Convert 25/1 yarn count to denier count b. Convert 30/1 yarn count to denier count

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Q: 2. (Principle) What does the H-value mean? How is it related to energy balance?

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Q: 3. Draw a graph showing how the potential energy changes when two protons approach each other and…

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Q: How many particles are present in a closed container if the energy it contains is 98998.19J, and the…

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Q: what is semiclassical physics give some examples.

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Q: Constants | Periodic Table Learning Goal: To practice Tactics Box 1.6 Using Significant Figures. You…

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Q: 1. Explain the forms of energy with basic principle and examples.

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Q: 1. Which of the following are examples of how the sclence of physics is used to advance technology?…

A: Here in this question all options are correct.

Q: Convert the following standard form into scientific notation. 000000027 = ___2.7X10-8 356 =…

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Q: 3. Fill in blanks: a- Particles in matter are always moving due to their b- is the flow of energy…

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Q: A rock has a Mass of 2.2 Dekagrams. Find the Density if it occupies a space of 11 milliliters

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Q: Re cell - Jupyter Notebook PDF Physics textbook 1.pdf A Read aloud Draw E Highlight O Erase 2 Or 1

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Q: What is the approximate mass of an oxygen molecule, O2, if the atomic mass of oxygen is 15.9994 u?

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Q: a steel train rail is 400 meters long, in march it is -30oC and 40oC in july. what is the change in…

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Q: 1. Nuclear fission is . 2. By assuming that g is 10 N/kg and that air resistance and other…

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Q: What is advanced physics And also tell me what what are uses of physics in daily life

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Q: convert 5520 kg/m3 to g/cm3, explain the solutions/concepts

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Q: Review | Constants | Periodic Table Rule for dividing numbers in scientific notation When dividing…

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Q: Use the Widmark Equation, , to solve this question. Recall that r = 0.68 for men and r = 0.55 for…

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Q: Chapter 5 Gas Liquid Solid Description Particles collide and bounce with no attraction between…

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Q: An automobile company displays a die-cast model of its first car, made from 9.35kg of iron. To…

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Q: 4. Given the name of an element and the number of neutrons, find the mass of an isotope Develop your…

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Q: 2. If the birth rate was 1.3%, how many individuals were born that year? * 2,683,450 O 3,144,591 O…

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Q: A 330.0 g bird flying along at 8.10 m/s sees a 17.0 g insect heading straight toward it with a speed…

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Q: 4. Compare the following two masses and find the percetage difference between the two values: 2.43…

A: Given : m1 = 2.43 kg m2 = 2.27 kg

Q: Sodium-24 is an isotope that decays exponentially, with a half-life of 15 hours. The element is used…

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Q: 2. If the birth rate was 1.3%, how many individuals were born that year? O2,683,450 O 3,144,591…

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Q: 1. How do you differentiate between what is matter and what is not? List three materials that are…

A: 1.  Matter is a substance which has it's own mass and it takes up space having some volume.…

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.