Answer:
c
Explanation:
just trying to follow basic grammar.
The energy comes in waves and I forget how, but the waves make the water molecules in teh food spin and that causes friction which warms the food up
Answers:
a) 154.08 m/s=554.68 km/h
b) 108 m/s=388.8 km/h
Explanation:
<u>The complete question is written below:
</u>
<u></u>
<em>In 1977 off the coast of Australia, the fastest speed by a vessel on the water was achieved. If this vessel were to undergo an average acceleration of 
, it would go from rest to its top speed in 85.6 s. </em>
<em>a) What was the speed of the vessel?
</em>
<em>
</em>
<em>b) If the vessel in the sample problem accelerates for 1.00 min, what will its speed be after that minute? </em>
<em></em>
<em>Calculate the answers in both meters per second and kilometers per hour</em>
<em></em>
a) The average acceleration 
is expressed as:
(1)
Where:
is the variation of velocity in a given time 
, which is the difference between the final velocity 
and the initial velocity 
(because it starts from rest).
Isolating from (1):
(2)
(3)
(4)
If 
and 
then:
(4)
b) Now we need to find the final velocity when 
:
<em></em>
(5)
(6)
Answer:
Explanation:
To estimate the focal length of a convex lens follow the following steps.
1. take a convex lens.
2. Stand near a window which is just opposite to a wall.
3. Look at a tree which is far away from the window by the convex lens.
4. focus the image of the tree on the wall which is opposite to the window.
5. You wll observe that by changing the position of convex lens a sharp and inverted and small image is seen on the wall.
5. Now measure the distance between the lens and the wall.
7. This distance is the rough focal length of the convex lens.
