Given that,
Mass of magnesium, m = 2 kg
Heat added to it, Q = 8160 J
Increase in temperature,
To find,
The specific heat of magnesium.
Solution,
Th formula that is used to find the heat required to raise the temperature in terms of specific heat is given by :
So, the specific heat of magnesium is .
Answer
Force is necessary to stretch a spring 0.5 m when the spring constant is 190 N/m is 95 N .
Explanation:
By using Hookes law .
The force required to extend a spring is directly proportional to the distance you stretch it .
Thus
F = kx
Where F is force , k is spring constant and x is the extension of spring .
As given
A spring is stretch to 0.5 m .
The spring constant is 190 N/m .
x = 0.5 m
k = 190 N /m
Putting all the values in the formula
F = 190 × 0.5
= 95 N
Therefore the force is necessary to stretch a spring 0.5 m when the spring constant is 190 N/m is 95 N .
wave energy
solar energy
Answer:
all the options listed are renewable sources of energy
Explanation:
renewable sources of energy are energy sources that are easily replenished naturally such as solar energy, wind energy , wave energy even energy from rain. These sources are usually environmental friendly that non renewable energy sources
non renewable energy however, are sources of energy that will eventually run out. examples are coal, crude oil, natural gas, nuclear energy. these sources mostly pose a high risk to the environment when being used.
hope this is quite helpful?
b. gamma ray.
c. microwave.
d. ultraviolet wave.