Answer:
(a) 4190 rad/sec
(b) 4064 rad/sec
(c) Percentage change is 3 %
Explanation:
We have given inductance
Capacitance
We know that resonance frequency is given by
Now resistance is given as R = 1020 ohm '
(b) We know that damped frequency is given by
(c) Percentage change in frequency %
Answer:
ΔT = 25°C
Explanation:
Given that.
The mass of a bullet, m₁ = 30 g = 0.03 kg
The speed of the bullet, v = 900 m/s
Mass of soft iron, m₂ = 1 k
The specific heat of iron, c=490J/kg°C
We need to find the increase in temperature of iron. using the conservation of energy,
Kinetic energy = heat absorbed
So, the correct option is (A).
Answer:
option C
Explanation:
given,
Period of oxygen molecule = 6 s
number of molecule = 6 x 10²³
Area of wall = 2 cm²
speed of molecule = 400 m/s
mass of O₂ molecule = 5.344 × 10⁻²⁶ Kg
we know,
Δp= F Δt
Δp change in momentum
Δp = N.m.Δv
where N is the number of oxygen molecules strike a wall
Δv = v - (-v)= 2 v
Pressure,
P = 21376 Pa
P = 21.4 kpa
hence the correct answer is option C