A mature thunderstorm will contain both updrafts and downdrafts. True or False
2 answers:
You might be interested in
The force of frictions is opposed to relative motion.
The acceleration of the crate is approximately <u>2.937 m/s²</u>.
Reason:
The given parameters are;
The mass of the wood, m = 100 kg
The force which can move the wood, F = 588 N
Wood on wood static friction, = 0.5
Wood on wood kinetic friction, = 0.3
Solution;
The force of friction, , acting when the crate is moving is given as
follows;
= m × g ×
Where;
g = The acceleration due to gravity ≈ 9.81 m/s²
Therefore, we have;
= 100 × 9.81 × 0.3 = 294.3
The force of friction, = 294.3 N
The force with which the crate moves, F = 588 - 294.3 = 293.7
The force with which the crate moves, F = 293.7 N
Force = Mass, m × Acceleration, a
Therefore;
The acceleration of the crate, a ≈ <u>2.937 m/s²</u>.
Learn more about friction here:
Answer:
The mmf required is ×
A
Explanation:
The Magnetomotive force (mmf) is given by the formula below
where is the Magnetomotive force (mmf)
is the Magnetic field strength
is the magnetic length
The magnetic permeability μ is given by
μ =
Where is the Magnetic flux density
and is the Magnetic field strength
From the question,
= 1.2Wb/m^2
μ = 1600m
From μ =
∴μ
×
A/m
Now, for the Magnetomotive force (mmf)
From the question
= 1.5 m
∴ ×
×
×
Hence, The mmf required is ×
A