Abike weighing 40kgs was picked up from the bike shop. he rode 4000m at 8m/s before realising it had a scratch on it  what was the force needed to move the bike?

More solar radiation is absorbed by earth’s surface than by

How many neutrons does plutonium -196 with an atomic number of 78.

Ahole in the ground in the shape of an inverted cone is 14 meters deep and has radius at the top of 11 meters. the cone is filled to the top with sawdust. the density of the sawdust depends upon the depth, x, following the formula ρ ( x ) = 2.5 + 1.2 e − 0.7 x kg/m3. find the total mass of sawdust in the conical hole.