<h2>
Answer: It is the result of a mixture of radiation from many independent sources, such as stars and galaxies. </h2>
Microwave background radiation was accidentally discovered by Penzias and Wilson on 1964. This is a form of electromagnetic radiation that <u>is present in the </u><u>whole universe</u><u> and completely fills it (it is isotropic)</u>.
<h2>
It is the leftover radiation from the big bang.
</h2>
Its frequency belongs to the microwaves range and is one of the main demonstrations of the of the Big Bang theory model.
It is important to note the Big Bang occurred 400,000 years before the events related to the microwave cosmic radiation, this means the Big Bang occurred first.
Explanation :
(1) The path of motion of a thrown javelin is an example of projectile motion. It is a type of motion that is experienced by an object that is thrown near the earth's surface. The object then moves along a curved path under the influence of gravity.
(2) Force is the product of mass and velocity i.e. F = ma
So,
Hence, the acceleration of an object is equal to net<em> force</em> acting on the object dividing by the objects<em> mass.</em>
(3) The pressure exerted by a fluid at any given depth is exerted <em>uniformly </em>in all directions.
(4) Mass of canoe, m = 38 Kg
velocity of canoe, v = 2.2 m\s
momentum is given by, p = mv
So, momentum of canoe is 83.6 Kgm/s
(5) Acceleration is given by the rate of change of velocity per unit time. If is final velocity and is initial velocity,
Then change in velocity will be
since,
So,
Answer:
E = -8.23 10⁻¹⁷ N / C
Explanation:
In the Bohr model, the electric potential for the ground state corresponding to the Bohr orbit is
E = k q₁ q₂ / r²
in this case
q₁ is the charge of the proton and q₂ the charge of the electron
E = - k e² / a₀²
let's calculate
E = - 9 10⁹ (1.6 10⁻¹⁹)² / (0.529 10⁻¹⁰)²
E = -8.23 10⁻¹⁷ N / C
An Active solar energy system because it uses the sun to heat up the green house an I’m return the plants grow an produce food
Answer:
The current in the ammeter is zero.
(1) is correct option.
Explanation:
Given that,
The capacitor is charged.
We need find the current after closed switched
We know that,
When switch is closed then the capacitor behave as a short circuit, and the all current flows through it. the current is zero.
Then, the ammeter reads zero.
Hence,
The current in the ammeter is zero.
(1) is correct option.