Answer:
See explanation
Explanation:
We have to convert to angular velocity in rads-1 as follows;
Angular velocity in rad/s = 2π/60 × 1900 rpm = 199 rad/s
Given that
angular velocity =angle turned /time taken
Time taken = angle turned/angular velocity
Converting 35° to radians we have;
35 × π/180 = 0.61 radians
Time taken = 0.61 radians/199 rad/s
Time taken = 0.0031 seconds
A. directly convert hydrogen to electricity
Answer:
Explanation:
velocity=s/t
given distance is 480 km we have to convert it into meter because the unit of distance is meter
1 km=1000 m
480 km=480000 m =4.8*10^5
1 hour= 3600 s
12 hour =43200 s
now velocity=s/t
v=4.8*10^5/43200
v=11.11 m/s
Answer:
Ratio of resistance of wire with larger diameter to smaller diameter is 4.
Explanation:
Resistance is defined as the property of the material/wire to oppose the flow of current through it.
Resistance (R) of the wire is determine by the relation:
R = (рL)/A
Here р is resistivity of the wire and it depends upon the material of the wire, L is length of the wire and A is the area of the wire.
Area of wire, A = π (d/2)²
Here d is diameter of the wire.
According to the question, let R₁ and R₂ be the resistance of the two copper wires, d₁ and d₂ be there diameters respectively and L and р be the length and resistivity of the two wire respectively. Since, L and р are same foe two wires.
Hence, there ratio of resistance is given by:
=
=
We know that d₂ = 2d₁
= = 4
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