Answer:
Moment of inertia will be
Explanation:
We have given mass of the person m = 72 kg
Radius r = 0.8 m
Force is given F = 5 N
Angular acceleration
Torque is given by
We know that torque is also given by
, here I is moment of inertia and is angular acceleration
So
Answer:
c
10 A
Explanation:
Use the equation that calculates voltage: V = IR (That's capital "i")
"V" represents voltage. It's measured in the unit volts, the symbol V.
"I" represents current. It's measured in amperes, the symbol A.
"R" represents resistance. It's measured in ohms, the symbol Ω.
From the question, we know the source is 120 V and the resistance is 12Ω.
Substitute V = 120V, R = 12Ω into the equations. Isolate "I" to find the current.
V = (I)(R)
120V = (I)(12Ω)
I = 120V ÷ 12Ω
I = 10A
Therefore:
The current of a 12-ohm hair dryer that is connected to a 120-volt power source is <u>10 A (10-amps)</u>.
Kelvin is the SI scale of temperature.
Answer:
-In the isothermal process, temperature is kept constant so change in temperature when work is done on the system is zero. The internal energy of the system depends on temperature. So, $\Delta U=0$.
Explanation: