Answer:
0 (Zero)
Explanation:
Definition of work done states that ,
Work done on an object is the force applied on that object in the direction of Displacement of the object .
means that ,
W = F.dS (Dot product of Force and displacement)
When the wall is acted upon by the force of 20 N , Wall does not move ,
Thus , displacement of the wall is zero.
So, W = 20×0 = 0.
Thus, Work done on the wall is zero.
Answer:
see detailed solution attached.
Explanation:
Express the distance in meters:
d= 2 cm =0.02 m
V = Ed = 50 N/C * 0.02 m = 1 N/C m = 1 V = +1.0 V
The current in the circuit =5 A
Explanation:
Voltage = 60 V
resistance= 12 ohm
using ohm's law V=i R
60= i (12)
i=60/12
i=5 A
Thus the current flowing in the circuit = 5 A
C. Physicalist chemist and biologist conducted experience in gather collection that changed existing scientific knowledge about the oceans
Explanation:
The voyage of Her Majesty's Ship was highly important because it furnished scientists with rich evidence about a lot of phenomenon under study and this changed existing scientific knowledge about the ocean.
- H.M.S II was an expedition to study and map the ocean floor using some sophisticated and newer devices.
- It was through this expedition that the theory of plate tectonics was modified and became a theory
- The bathymetry of the ocean floor was also carried out.
- The mid-oceanic ridge was discovered through the expedition.
- Some rare species of organisms were also obtained from the ocean floor in this process.
- The H.M.S second expedition after the world war was very crucial and helped furthered scientific knowledge about the oceans.
learn more:
Sea floor spreading brainly.com/question/9912731
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