Answer:

Explanation:
According to volume thermal expansion the expansion in volume due to temperature is given by
here
is coefficient of volume expansion
The volume of copper pipe before expansion is 
Now the increase of copper pipe due to increase in temperature =
As
for copper is 
Now the increase of water due to increase in temperature = 
As
for water is 
So the minimum volume of reservoir tank to hold the overflow of water = 
Explanation:
Given:



First, we calculate the acceleration of the car during this time:

Plugging in the given values, we get

Now that we have the value for the acceleration, we can solve for the distance traveled during the time t:




Answer:
1) d 2) a 3)
Explanation:
4) B would be brighter and more useful than A because A is all bunched up together without any room for extra energy meanwhile B has plenty of room for more energy
A mechanical wave such as sound needs a medium to travel through. This is why they say that in space, no one can hear you scream (because space is a vacuum and no medium exists). On the contrary, light can exist in wave or particle form. This is why we have the ability to see beyond the realms of the Earth.