The correct answer to the question is : 
EXPLANATION :
As per the question, the specific heat of gold is given as c = 
The heat given to the gold dQ = 195 J
The mass of the gold is given as m = 15 gram.
We are asked to calculate the change in temperature.
Let the change in temperature is dT.
We know that dQ = mcdT

[ANS]
Hence, the change in temperature is 100 degree celsius.
Answer:

Explanation:
To find the rotational kinetic energy you first calculate the angular acceleration by using the following formula:

F: force applied
R: radius of the wheel
I: moment of inertia

With this value you calculate the angular velocity:

you calculate how many radians the wheel run in 5.0m


Next, you use the formula for the rotational kinetic energy:

For the transnational kinetic energy you use the following equation:
(net work equals the change in the kinetic energy).
By replacing the you obtain:

Finally, the ratio between translational rotational kinetic energy is:

hence, translational kinetic energy is three times the rotational kinetic energy.
Voltage across 1st resistor = I x R = 16 volts
thus voltage across 3rd resistor is also 16 volts.
resistance = V/I = 16/6 =2.7 Ω
The equation for power is P=VI, we can then rearrange V=IR and substitute I into the equation, this gets us V/R=I. Thus we get P=V^2/R
Next we convert kΩ to Ω. This tells us the resistor in Ω is 5600Ω.
Finally, plug into equation, we get P = (5V^2)/5600Ω.
P = 0.0044642857W
Hope this helps!