An electrical short cuts off all power to a submersible diving vehicle when it is a distance of 28 m below the surface of the oc
1 answer:
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Answer:
1331.84 m/s
Explanation:
t = Time taken
u = Initial velocity
v = Final velocity = 0
s = Displacement = 490 km
a = Acceleration
g = Acceleration due to gravity = 1.81 m/s² = a
From equation of linear motion
The speed of the material must be 1331.84 m/s in order to reach the height of 490 km
Answer:
Relative population is 2.94 x 10⁻¹⁰.
Explanation:
Let N₁ and N₂ be the number of atoms at ground and first excited state of helium respectively and E₁ and E₂ be the ground and first excited state energy of helium respectively.
The ratio of population of atoms as a function of energy and temperature is known as Boltzmann Equation. The equation is:
=
=
Here g₁ and g₂ be the degeneracy at two levels, K is Boltzmann constant and T is equilibrium temperature.
Put 1 for g₁, 3 for g₂, -19.82 ev for (E₁ - E₂) and 8.6x10⁵ ev/K for K and 10000 k for T in the above equation.
=
= 3.4 x 10⁹
= 2.94 x 10⁻¹⁰
Answer:
The charge is moving with the velocity of .
Explanation:
Given that,
Charge
Angle = 35°
Magnetic field strength
Magnetic force
We need to calculate the velocity.
The Lorentz force exerted by the magnetic field on a moving charge.
The magnetic force is defined as:
Where,
F = Magnetic force
q = charge
B = Magnetic field strength
v = velocity
Put the value into the formula
Hence, The charge is moving with the velocity of .