The electrostatic force between a negative electron and a neuter neutron is: a. negative and attractive b. positive and repulsion c. sometimes of attraction and sometimes of repulsion d. zero

Q: which of the following is NOT a subatomic particle that makes up an atom ? a) proton b) nucleon c)…

A: To determine which is not a subatomic particle that makes up an atom.

Q: The atomic masses of two isotopes of cobalt are 59 and 60. (a) What is the number of protons and…

A: Part A Isotopes are elements with same atomic number but different atomic masses.   The atomic…

Q: How many protons & neutrons do the following have? 112 - Cd bromine – 80 48

A: Given   48Cd112here number of protons p = 48number of neutrons n = atomic mass - number of protonsn…

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

A:

Q: Jessisa is doing an experiment. She knows that her alpha particle in her expirement has charge 2e…

A: charge on alpha particle (q) = 2echarge on gold nucleus (Q) = 79 eInitial distance between the gold…

Q: A certain five cent coin contains 5.00 g of nickel. What fraction of the nickel atoms’ electrons,…

A:

Q: Radioactive Strontium The half-life of strontium-90 is 28 years. How long will it take a 50-mg…

A: Given that, The half life of strontium, T1/2=28 years We need to find how long it take a 50 mg…

Q: Uranium-235 has a half-life of 7x10^8 years. An initially pure sample with mass 10 kg is created in…

A: Given data, Half-life t12=7×108 years Initial mass m0=10 kg

Q: 3. The discovery of the neutron helped people understand A. how two atoms of the same element can…

A:

Q: What is the magnitude of the repulsive electrostatic force between two protons in a nucleus?…

A: From the question it is given that:  Distance between two protons: r = 3.5×10-13 mCharge on protons:…

Q: 20 What is the force of repulsion between two argon nuclei that are separated by 1.0 nm (10 m on an…

A:

Q: The barium isotope 131 Ba has a half-life of 12 days. A 210 µg sample of 131 Ba is prepared. Part A…

A: Let thalf  be the half life time of Barium- 131. Evaluate the rate constant (λ).…

Q: 1. Which of the following statements about the atomic nucleus are correct? (There may be more than…

A: about nucleus

Q: Radioactive isotope Lawrencium-266 has a half-life of 11 days. Suppose a sample of this substance…

A: The relation for the half life and the decay constant is  r =0.693T where, T is the half life.

Q: Carbon is the sixth element in the periodic table. How many protons and how many neutrons are there…

A: carbon - 14

Q: 75% of a quantity of U-232 remains after 30 years. What is the half-life?

A:

Q: Question 19 of 20 Jesús sketched models of two different neutral isotopes of sodium. If the isotope…

A: Given: The two isotopes are neutral.

Q: What is the evidence that the cathode rays in a discharge tube are negatively charged particles?

A: First Evidence: Cathode rays are negatively charged particles and it is originated from the cathode…

Q: Determine the number of (a) electrons, (b) protons, and (c) neutrons in iron (2656 Fe)

A: (a) Number of electrons is equal to 26.

Q: 5. What are the weights of (a) 1 curie and 1 rd of Ra? (b) 1 curie and 1 rd of Rn? (c) 1 microcurie…

A: We are allowed to give the explanation of first three subparts of a question only which is given…

Q: Consider an object of mass 76.4 kg. Assume that it s made up of equal numbers of protons, neutrons,…

A: GivenMass of the object m = 76.4 kgMade up of equar number at electron, proton and neutroN

Q: 1.3H       Protons_____       Neutrons_____       Electrons_____

A:

Q: Two positively charged protons in a Helium nucleus are separated by about 2 x 10^-15 m. Use…

A: charge on each proton (q) = 1.6×10-19 C distance between two protons in a helium nucleus (d) =…

Q: List three subatomic particles. Discuss their charges and positions in an atom.

A: Subatomic particles The subatomic particles are  1.Electron 2.Proton 3.Neutron

Q: radioactive substance has a half life of 2120 years. A) Determine the rate constant for the decay…

A:

Q: 23) Which of the following physical quantities has the largest numerical value in SI units? A) The…

A:

Q: 11) What amount did you start with when you have 0.125-g left and you went through 5.48-half- lives?

A: Given,

Q: 7. Determine the velocity of the electron in a positronium atom which is shown in the figure. Assume…

A:

Q: Electrons and positrons are produced by the nuclear transformations of protons and neutrons known as…

A: (a)   The transformation of a proton into a neutron is, Here, a electron with a positive charge is…

Q: The You-Yangs are a series of rocky granite ridges to the south-west of Melbourne, whose rocks…

A:

Q: Large amounts of depleted uranium (238U ) are available as a by-product of uranium processing for…

A:

Q: 4. A neutral atom always has A) More neutrons than protons. B) More protons than electrons. C) The…

A: Neutral atoms are the atoms which have no charge neither negative nor positive.

Q: Example lcée's seet) Ng cmol Calculate the radius r of orbit and velocity of an electrons having…

A: For hydrogen atom, Z=1

Q: How much energy is required to remove a proton from N? 15 7

A: The nuclear reaction for the provided scenario is:

Q: An α particle, 4He2+, has a mass of 4.00151 amu. Determine the value of its charge-to-mass ratio in…

A:

Q: A proton, which is the nucleus of a hydrogen atom, can be modeled as sphere with a diameter of 2.4…

A:

Q: 1. Compare and contrast the strong nuclear force and the electromagnetic force (for example,…

A:

Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.