Answer:
E'=(3/16)E
Explanation:
The electric field generated by a Van de Graff generator can be taken as the electric field generated by a hollow shell (for distance out of the shell):
Q: electric charge
K: Coulomb's constant
R: distance in which E is measured.
If the distance is increased to R'=2R, and the charge to Q'=(4/3)Q the new electric field is:
hence, the new electric field E' is 3/16 times the previous electric field E
Answer: These apparent star tracks are in fact not due to the stars moving, but to the rotational motion of the Earth. As the Earth rotates with an axis that is pointed in the direction of the North Star, stars appear to move from east to west in the sky.
Explanation: why do the star constellations seem to move across the sky
Each laid 250 bricks but while Jake was
still working, Josh was lounging in the
shade. Josh has more power but that
power was only on for 3 hours out of 4.5.
Obviously Josh could get more done is less
time as long as he keeps working. Jake will
get the hang of it soon.
Answer:
1. Burning coal contributes to sulfur aerosols in the stratosphere; these sulfur aerosols have moderated global warming.
Explanation:
Sulfur aerosols both absorb as well as scatter solar radiation coming from the sun , thus saving the earth from getting wormed up . In this way it has moderating effect on the global warming . This is also called global dimming effect. Less of the solar radiation is able to reach earth surface due to these aerosol.
Answer:
The family in the first period is the alkali metal family.
