Answer:
Q = 675 [J]
Explanation:
We can calculate the amount of heat transfer by means of the following expression that includes the mass and temperature change in a body as a function of the specific heat.

where:
m = mass = 25 [gr]
Cp = specific heat = 0.9 [J/g*°C]
Tinitial = 55 [°C]
Tfinal = 25 [°C]
![Q=25*0.9*(55-25)\\Q=675 [J]](https://tex.z-dn.net/?f=Q%3D25%2A0.9%2A%2855-25%29%5C%5CQ%3D675%20%5BJ%5D)
Answer:
D, rubber
Explanation:
Metals have free electrons, and are very bad as insultators. Metals conduct electricity very well. On the other hand, rubber has no free electrons and does not conduct electricity very well
To solve the problem it is necessary to apply the theory of sine waves. The wavelength λ of a sinusoidal waveform traveling at constant speed v is given by

Where,
v= velocity
f = frequency
Re-arrange to find v, we have

PART A ) Replacing with our values we have,


PART B) In the case of the period we know that it is defined as a function of frequency as,

That is to say that using the previously given values we have that the period in seconds is,

PART C) Finally the transverse wave velocity is given by,

Where,
T= Period
Linear mass density
Re-arrange to find 



Non renewable resources are resources that we can only use for so long until they’re gone and they can not be brought back. So like coal would be a non renewable resource. Renewable resources are resources that we can continue to use and we will always have them. An example of a renewable resource would be oxygen. We can breathe as much oxygen as we want but we will never run out of it.