Figure 13-44 gives the po- tential energy function U(r) of a projectile, plotted outward
from the surface of a planet of radius Rs. What least kinetic energy is required of a projectile launched at the surface if the
projectile is to “escape” the planet?

Ineed extreme for task 2. my student number is 571721. many to whoever solves this correctly, im in debt to you.

Two vectors are shown. which statement best compares the vectors? vector x has greater magnitude than vector y. vector y has greater magnitude than vector x. the vectors have the same displacement. the vectors have the same direction.

Starting with only the balmer series light (visible light), how could we ensure that the solar panels generate a current that mark can use for his power station? a)by gradually increasing the brightness (amount) of light that we shine on it. b)by gradually increasing the frequency of the light we shine on it. c)by gradually increasing the wavelength of the light that we shine on it.