Asmall sphere of mass m is launched horizontally over a body of water from a height h above the water and with a launch speed v0. determine expressions for the following in terms of m, v0, h, and g. air resistance is negligibly small.(a) w is the amount work done by the force of gravity on the projectile during its flight. w = −mgh for a conservative force, how does the work done by the force compare to the change in potential energy associated with the force? (b) δke is the change in kinetic energy δke of the projectile from the time it was fired until it hits the water.δke = 12mv2ƒ−12mv2i according to the work energy theorem, how does the net work done of an object compare to its change in kinetic energy? (c) kef is the final kinetic energy kef of the projectile as it hits the water. kef = 12mv2i−mghcan you express the final kinetic energy in terms of the change in kinetic energy and the initial kinetic energy?

hi,

what occurs during a solar eclipse?

there are small tides across earth.

the moon is between earth and the sun.

p.s. im not sure if the first answer is correct because during a solar ecliphse there are spring tides and i dont know if they are the same.

answer: 2×10^-2kg

explanation: density= mass per volume

vol=mass/density

converting to s.i units we have;

3÷1000kg = 0.003

1.5÷100m = 0.15

0.003/0.15 = 0.02kg

bacteria that live on the ocean floor are sustained by phytoplankton. phytoplankton, microscopic marine photosynthetic organisms, have a vastly significant role to play not only in the marine food web of which they’re part of, but also on a more global scale. despite their infinitely small size in comparison to other marine organisms, these tiny creatures occupy an immensely important ecological niche: they are the foundation of the marine food web, and as primary producers, play key roles in supporting all other organisms in the marine environment, as well as in the regulation of the earth’s climate through the sequestration of carbon, oxygen production, and other related processes. phytoplankton account for roughly half of all global primary productivity; therefore, their significance extends far beyond the marine environment alone. there is an intriguing sense of irony in the realization that these tiny living beings that often live out their existence unnoticed and undetected by the rest of the world, have such a far-reaching impact on the lives of virtually all other living organisms on the planet, particularly on those in the marine environment. the world that we have become accustomed to has been and is continuously shaped by the workings of these miniscule yet vital “plants of the sea”.

hope this !

answer a fan shaped mass of sediment deposited at the base of a mountain front do to an abrupt change in stream gradient;