Answer: 
Explanation:
Using Weins displacement law:
where 
= wavelength = 
b = constant =
T = Temperature in Kelvin = ?
Putting the values we get:
Thus the temperature of the blackbody will be
The air behind the front is cooler than the air it is replacing and the warm air is forced to rise, so it cools. As the cooler air cannot hold as much moisture as warm air, clouds form and rain occurs.
Answer:
80
Explanation:
(2 x 10 - 5) + (7 x 10 - 5)
= (20 - 5) + (70 - 5)
= 15+ 65
= 80
Answer:
C. its age
Explanation:
Rex is most likely trying to figure out the age of the rock formation. It is usually done by comparing the isotopic ratios of the daughter to the parent and their decay rates.
- This is known as radiometric dating.
- Here an exact numerical age of the rock is usually obtained by measuring these isotopic ratio.
- The rate of decay serves as a clock to measure how far the radioactive material has decayed in time
