A stone is projected at an angle of 50.00 degrees to the horizontal. If initial velocity of the object is 50.00 m/s, calculate the vertical
component of this velocity in m/s.

A. 32.14
B. 38.3
C. 28
D. 34

Natural forces that can alter ecosystems include seasons and climate changes. t or f

I'm thinking it's 2 you are asked to explain the earth's magnetic field. which is the best reply? 1. the earth's magnetic south is similar to the north pole of a magnet. 2. the earth's core has a strong magnetic charge similar to the south pole of a magnet. 3. the earth's geomagnetic south is similar to the south pole of a magnet. 4. the earth's magnetic charge is not centered at either pole; it varies based on location.

Atoms seldom exist as independent particles in nature a) as single particles, most atoms have low potential energy b) their electronegativity is much lower when they combine with other atoms c) atoms are more stable when they combine with other atoms d) neutral particles are rare