A small block, with a mass of 250 g, starts from rest at the top of the apparatus shown above. It then slides without friction down the incline, around the loop and then onto the final level section on the right.
The maximum height of the incline is 80 cm, and the radius of the loop is 15 cm.
a. Find the initial potential energy of the block
b. Find the velocity the block at the bottom of the loop
C. Find the velocity of the block at the top of the loop.
d. What is the normal force on the block at the lowest point of the loop?
e. What is the normal force on the block at the highest point of the loop?

convex lenses are thicker at the middle. rays of light that pass through the lens are brought closer together (they converge). a convex lens is a converging lens. when parallel rays of light pass through a convex lens the refracted rays converge at one point called the principal focus.

hypothesising or postulating

d eras and periods

here are some information of the future of geothermal energy:

-the future of geothermal energy can pretty much be summed up with a single word: more

-scientists plan in going deeper than 120 meters

-we are hoping that one day, we will get all of our energy from renewable energy sources such as geothermal energy

hope this !