Awell-greased, essentially frictionless, metal bowl has the shape of a hemisphere of radius 0.150 m. you place a pat of butter of mass 5.00×10−3kg at the rim of the bowl and let it slide to the bottom of the bowl. what is the speed of the pat of butter when it reaches the bottom of the bowl?

Explanation:

As we know that there is no friction in the bowl so total mechanical energy is conserved here

So we can say that

initial potential energy of the butter = final kinetic energy at the bottom

so we can say

here we can solve it for speed v

now plug in all values in it

answer:   you might love summer weather, but you don’t want it to feel like the sun is inside your car. but a hot car that just won’t seem to cool down might be a bigger of a problem than you think. your car relies on being at the right temperature.

explanation:

what experimental evidence led scientists to change from the previous model to this one?

a few of the positive particles aimed at a gold foil seemed to bounce back.

the colors of light emitted from heated atoms had very specific energies.

experiments with water vapor showed that elements combine in specific proportions.

cathode rays were bent in the same way whenever a magnet was brought near them.