Answer:
b. He was one of the first researchers to establish how heredity worked.
Explanation:
Gregor Mendel discovered the basic principles of heredity through experiments in his garden which showed that the inheritance of certain traits in pea plants follows particular patterns.
Experiment was conducted on around 29,000 pea plants.
He is known as the father of modern genetic.
From the information presented in the movie, it can be concluded that he was one of the first researchers to establish how heredity worked.
<span>perpendicular to a uniform 1.50- magnetic field, as shown in the figure.
Part A
Calculate the net force which the magnetic field exerts on the coil.
ANSWER:
=0Correct
Part B
Calculate the torque which the magnetic field exerts on the coil.
ANSWER:
=0Correct
Part C
The coil is rotated through a 30.0 angle about the axis shown, the left side coming out of the plane of the figureand the right side going into the plane. Calculate the net force which the magnetic field now exerts on the coil.(
Hint:
In order to help visualize this 3-dimensional problem, make a careful drawing of the coil when viewedalong the rotation axis.)
ANSWER:
=0Correct
Part D
Calculate the torque which the magnetic field now exerts on the coil.
ANSWER:
=8.09Ă—10
â’2
Correct
Torque on a Current Loop in a Magnetic Field
Learning Goal:
To understand the origin of the torque on a current loop due to the magnetic forces on the current-carrying wires.This problem will show you how to calculate the torque on a magnetic dipole in a uniform magnetic field. We startwith a rectangular current loop, the shape of which allows us to calculate the Lorentz forces explicitly. Then wegeneralize our result. Even if you already know the general formula to solve this problem, you might find itinstructive to discover where it comes from
Part A
Find , the electric field inside the cube.
Hint A.1 Net force on charges in a conductor
Hint not displayed
Hint A.2 Find the magnetic force magnitude
Hint not displayed
Hint A.3 Find the magnetic force direction
Hint not displayed
Hint A.4 Determine the force due to the electric field
Hint not displayed
Express the electric field in terms of , , and unit vectors ( , , and/or ).
ANSWER:
=CorrectNow, instead of electrons, suppose that the free charges have
positive
charge . Examples include "holes" insemiconductors and positive ions in liquids, each of which act as "conductors" for their free charges.
Part B
If one replaces the conducting cube with one that has positive charge carriers, in what direction does the inducedelectric field point?
ANSWER:
CorrectThe direction of the electric field stays the same regardless of the sign of the charges that are free to move in theconductor.Mathematically, you can see that this must be true since the expression you derived for the electric field isindependent of .Physically, this is because the force due to the magnetic field changes sign as well and causes positive charges tomove in the direction (as opposed to pushing negative charges in the direction). Therefore the result isalways the same: positive charges on the side and negative charges on the side. Because the electric fieldgoes from positive to negative charges will always point in the direction (given the original directions of</span>
Answer:The binding energy of the nitrogen nucleus is .
Explanation:
Atomic mass of the nitrogen, =14.00307 amu
Number of protons, Z = 7
Number of neutrons,N = Atomic mass - number of protons
=14.0037 - 7 =7.00307
Mass of proton ,
Mass of neutron,
Binding energy =
The binding energy of the nitrogen nucleus is .
Answer:
44.11 g/mol
Explanation:
In order to calculate the molar mass of any molecule, we need to add the molar mass of each atom that compounds it:
- Molar Mass of C₃H₈ = (Molar Mass of C) * 3 + (Molar Mass of H)*8
- Molar Mass of C₃H₈ = (12.01) * 3 + (1.01) * 8
- Molar Mass of C₃H₈ = 44.11 g/mol
The molar mass of propane is thus 44.11 g/mol.