Answer:
number protons and force are Q = 1,472 10⁻¹⁷ C F = 3,656 10⁻⁸ N
Explanation:
Atoms are neutral whereby the number of electrons in the atom is compensated by an equal number of positively charged protons in the nucleus, so there are 92 protons, the total charge can be found by a rule of proportions
Q = # proton * 1.6 10⁻¹⁹C
Q = 92 * 1.6 10⁻¹⁹
Q = 1,472 10⁻¹⁷ C
To calculate the force of an electron we use Coulomb's law
F = k q1 Q / r²
F = k e Q / r²
The Coulomb constante is 8.99 10⁹ N m² /C²
F = 8.99 10⁹ 1.6 10⁻¹⁹ 1,472 10⁻¹⁷ / (7.61 10⁻¹⁰)²
F = 3,656 10⁻⁸ N
This force is attractive.
Temperature does change from room temperature water to boiling water. It does not change in boiling water liquids can only absorb a specific amount of heat before changing the state of the water. The pressure in the water does not allow the temperature to change.
Answer:
Force will be
Explanation:
We have given side of wire d = 2.3 cm = 0.023 m
Magnetic field B = 1.5 T
Velocity v = 2.1 m/sec
Resistance R = 3 ohm
We know that current is given by
Power is given by
We know that power is also given by
So
The angular momentum calculated with respect to the axis of rotation of an object is given by:
where m is the object's mass, v is its tangential speed, and r is its distance from the axis of rotation.
In case of a man on a Ferris wheel, we need to have these quantities in order to calculate his angular momentum. These quantities corresponds to:
- m, the mass of the man
- v, the tangential speed of the wheel at its edge
- r, the radius of the wheel
It is possible to calculate the angular momentum even if we don't know v, the tangential speed. In this case, we need to know at least the angular velocity
(because from this relationship we can find the tangential speed:
) or the period of rotation of the wheel, T (because we can find the angular velocity from it:
).