Answer:
43740 N and attractive force
Explanation:
Given that,
Charge 1, q₁ = -54.0 μC
Charge 2, q₂ = +36.0 μC
The distance between charges, r = 2 cm = 0.02 m
We need to find the force between charges. The formula for the force between charges is given by :
Put all the values,
As the charges are opposite, the force between them is attractive. Hence, the required force is 43740 N.
Answer:
23.4 m/s
Explanation:
f = actual frequency of the wave = 6.2 x 10⁹ Hz
= frequency observed as the ball approach the radar
= frequency observed as the ball recede away from the radar
V = speed of light
= speed of ball
B = beat frequency = 969 Hz
frequency observed as the ball approach the radar is given as
eq-1
frequency observed as the ball recede the radar is given as
eq-2
Beat frequency is given as
Using eq-2 and eq-1
inserting the values
= 23.4 m/s
Answer:
It's Helium.
Explanation:
The superficial layers of the star compress the core as an effect of its own gravity. Therefore, atoms will be closer to each other in the core, allowing them to be combined.
A nuclear reaction occurs when light elements combine into heavier elements (that is known as nucleosynthesis). Different ways in which that can happen exist, but the most common in the Sun, according to its mass, is the Proton-Proton chain reaction. In that fusion reaction two atoms of Hydrogen are combined to form Helium.
Remember that a Helium atom is composed of two Protons and two Neutrons.
The Proton-Proton chain works in the following way:
+
=
+
+
Two Protons combine each other () and one Deuterium (
) is gotten, and one Neutrino (
), and one Positron (
) are emitted from them.
+
=
+
A deuterium and Proton combine each other and a Helium three nucleus() is gotten, and a gamma ray (
) is emitted.
+
=
+
+
Two Helium three nucleus combine and a Helium atom () is gotten, and two Protons are emitted.
So, when hydrogen atoms fuse together helium is created.