Answer:
g = 11.2 m/s²
Explanation:
First, we will calculate the time period of the pendulum:
where,
T = Time period = ?
t = time taken = 135 s
n = no. of swings in given time = 98
Therefore,
T = 1.38 s
Now, we utilize the second formula for the time period of the simple pendulum, given as follows:
where,
l = length of pendulum = 54 cm = 0.54 m
g = acceleration due to gravity on the planet = ?
Therefore,
<u>g = 11.2 m/s²</u>
Answer:
The induced voltage in the Secondary is 18 volt.
Explanation:
Given that,
Voltage = 120 volt
Number of turns in primary = 500
Number of turns in secondary = 75
We need to calculate the induced voltage in the Secondary
Using relation number of turns and voltage in primary and secondary
Where, = Number of primary coil
= Number of secondary coil
= Voltage of primary coil
= Voltage of primary coil
Put the value into the formula
Hence, The induced voltage in the Secondary is 18 volt.
Answer:
the amount of heat that gets through both the wires will be same.
Explanation:
By the Fourier's law of conduction we have:
where:
= rate of heat transfer
k = thermal conductivity of the material
A = area of the material
dT = temperature difference across the length dx
According to the question, the system to be analysed is isolated from the surrounding.
Until the thermal equilibrium is established between aluminium and copper wires the amount of heat that gets through both the wires will be same.
<em>But the rate of heat transfer through the aluminium will be greater as it has double the thermal conductivity of copper.</em>
Answer:
Explanation:
First of all, let's convert the area of the front side of the person into :
And the atmospheric pressure is
The force pressing on this person from the front side is
and substituting the values of the pressure and the area, we find