Answer:
The answer D ...............
When an object vibrates in simple harmonic motion in the vertical direction, its minimum speed occurs when it is at <em>either endpoint</em> ... either the highest point or the lowest point.
At those points, it reverses its direction, so its speed is zero for an instant.
It depends on the electricity passed with cold water or hot water it also depends on the structure of the object in gas the current flows faster than solid or liquid
Answer:
The thermal conductivity
Explanation:
From the question we are told that
The depth of the thermocouple from the surface is x = 10 mm = 0.01 m
The temperature is
The initial temperature is
The temperature of the thermocouple after t = 2 minutes( 2 * 60 = 120 \ seconds) is
The density of the material is
The specific heat of the solid
Generally the equation for semi -infinite medium is mathematically as
Here is a constant with unit
this is from the Gaussian function table
=>
=>
Generally the thermal conductivity is mathematically represented as
Answer:
Will double
Explanation:
The total resistance of a circuit with n resistors in series is equal to the sum of the individual resistances:
In this problem, we have a circuit with initially one light bulb of resistance R, so the total resistance of the circuit is:
Later, a second identical bulb (so, same resistance R) is added in series to the circuit; so applying the previous formula, we see that the new total resistance is
So, the resistance has doubled.