The answer is 10.5 kg m/s
Impulse (I) is the multiplication of force (F) and time interval (Δt): I = F · Δt
Force (F) is the multiplication of mass (m) and acceleration (a): F = m · a
Acceleration (a) can be expressed as change in velocity (v) divided by time interval (Δt): a = Δv/Δt
So:
a = Δv/Δt ⇒ F = m · a = m · Δv/Δt
F = m · Δv/Δt ⇒ I = m · Δv/Δt · Δt
Since Δt can be cancelled out, impulse can be expressed as:
I = m · Δv = m · (v2 - v1)
It is given:
m = 1.5 kg
v1 = 15 m/s
v2 = 22 m/s
I = 1.5 · (22 - 15) = 1.5 · 7 = 10.5 kgm/s.
Answer:
V = 2.05× 10⁸ m/s
Explanation:
We are given;
The angle of the incidence; i = 40°
Angle of refraction; (r) = 26°
For us to find the speed of light in the material, we'll use Snell's law
From shell's law, we know that;
n = sin i/sin r = speed of light in air/Speed of light in the medium
Now, speed of light in air = 3 × 10⁸ m/s
Lets speed of light in medium be V
Thus, plugging in the relevant values to obtain;
Sin 40°/sin 26° = 3×10⁸/V
Let's make V the subject;
V = 3 × 10⁸× sin 26°/sin 40°
V = 2.05× 10⁸ m/s
Answer:
No, some energy will be dissipated energy due to work of air resistance.
A nuclear power plant is defined as a thermal power station where electricity is generated by the help of sustainable nuclear fission.
A nuclear power plant needs nuclear reactor as the thermal energy generator .The reactor has various parts where fissionable radioactive material will undergo nuclear fission .Through this process high amount of thermal energy is released which is allowed to water to generate steam.
The steam produced in the reactor drives the turbine which is connected to the generator.Due to the electromagnetic induction the generator will produce electricity.
The control rods present in the nuclear reactor will control the rate of fission by absorbing the thermal neutrons.
Hence the correct answer of the question is C i.e Turbine.
FULL ANSWER
Neutrons and protons make up a nucleus and they are in the middle of an atom. Electrons surround the nucleus. Opposite charges attract each other. Because of this, protons do not attract other protons and electrons do not attract other electrons. Instead, protons attract electrons and electrons attract protons. When someone looks at the elements on the periodic table, they can see how many protons are present by looking at the atomic number. Since atoms have to have an equal amount of each, if an element contains 36 protons, it also has 36 electrons.
