Answer:
a. 25000J or 25KJ
b.2500w
Explanation:
a. since we say work is force applied in the same line or straight line
<em>W=</em><em>F(</em><em>newtons </em><em>)</em><em>*</em><em>D(</em><em>metres</em><em>)</em><em> </em>
<em>b.</em><em> </em><em>power </em><em>is </em><em>work </em><em>over </em><em>time </em>
Answer:
Oxygen cycle
Explanation:
The components of the reservoirs of oxygen that are exchange in our environment is the oxygen cycle
It suggests the movement of oxygen between the living and non-living parts.
- The cycle does not account for oxygen that is trapped and cannot be exchanged in nature.
- Oxygen is important component of the atmosphere.
- Gaseous exchange between living organisms and atmosphere involves oxygen to a very large extent.
The mineral with Mohs hardness would be scratched because the mineral with Mohs 7 hardness is stronger than the Mohs 5 mineral. Eventually, that mineral would turn into dust if you kept rubbing it.
Answer:
Check the explanation
Explanation:
net angular momentum is conserved as there is no net external torque.
therefore. 0 = angular momentum of woman + angular momentum of wheel.
0 = 55x2x1.5 + 480xω
ω = -0.3056 rad/sec ,-ve sign shows that the direction is opposite to woman, ie counterclockwise.
work done by woman = total kinetic energy of the wheel and woman
=1/2 x 55 x 1.52 + 1/2 Iω2 = 1/2x55x1.52 + 1/2x540x0.30562= 41.8+73.35 = 115.14J