Centrifugal force is not a real force.
When you move around a curve, there IS a real force pulling you
around the curve. Since your body wants to go straight, it feels as if
there's a force trying to pull you away from the curve. But there isn't.
That feeling of a force is greater when your speed around the curve
is greater, or when the curve is tighter, i.e. smaller radius.
Condensation is a change of state from vapour to liquid while
freezing is also a change of state, from liquid to solid. Both are
change of states.
Additionally, condensation requires
much more energy to change the state of vapor to liquid than it does it
change the state of liquid to solid.
Answer:
A). Both prokaryotic cell and eukaryotic cel contain cytoplasm
Explanation:
The cytoplasm is the fluid made mostly of water, protein, and salt. It is the main component that fills a cell.
Prokaryote and eukaryotes are the classification of cell-based on if the cell has a nucleus or not. Eukaryotes have a nucleus and considered to be more complex than prokaryotes. Both prokaryotic and eukaryotic cells should have cytoplasm and cell membranes.
Answer:
a) The work done on the astronaut by the force from the helicopter is 
.
b) The work done on the astronaut by the gravitational force is 
.
Explanation:
We are told that the mass of the astronaut is 
, the displacement is 
, the acceleration of the astronaut is 
and the acceleration of gravity is 
.
We suppose that in the vertical direction the force from the helicopter 
is upwards and the gravitational force 
is downwards. From the sum of forces we can get the value of :
We define work as the product of the force, the displacement of the body and the cosine of the angle 
between the direction of the force and the displacement of the body:
a) The work done on the astronaut by the force from the helicopter
b) The work done on the astronaut by the gravitational force
Answer:
a) 3 * 10^9 ms
b) 1.6 * 10^-9 gm
c) 6.4 * 10^6 m
d) 5.48 * 10^5 s
Explanation:
Scientific notation is always written in [number from 0-10] (multiplied by) [10] raised to the power 'n'
