Answer: 439.01 J
Explanation:
The Kinetic Energy at the top + Potential Energy at the top + Work Done = Kinetic Energy at the bottom + Friction loss
1/2mv² + mgh + W = 1/2 mv² + Fd
1/2 * 56.5 * (1.4)² + 56.5 * 9.8 * 2.05 + W = 1/2 * 56.5 * (6.3)² + 41 * 12.4
1/2 * 56.5 * 1.96 + 56.5 * 9.8 * 2.05 + W = 1/2 * 56.5 * 39.69 + 41 * 12.4
55.47 + 1135.085 + W = 1121.243 + 508.4
1190.555 + W = 1629.643
W = 1629.643 - 1190.555
W = 439.088
W = 439.09 J
Answer:
I think your answer might be letter C
Explanation:
If it is wrong I am so sorry forgive me if it is wrong let me know please ok.
Answer:
Explanation: divide 280 by 68 which would = 4 I think
Surface tension is a property of a liquid to resist the external force. It is the result of cohesive forces between the molecules of the liquid.
The stronger the cohesive forces between the molecules of the liquid, the stronger is the surface tension.
Since methylated spirit has weaker cohesive forces than water, it will also have a weaker surface tension.
Answer:
3.2
Explanation:
Resistance=5 ohm
Length=4m
Cross sectional area=2.5 x 10
Conductivity = 1/ resistivity
=
Conductivity=4 /5 x 2.5 x 10
Conductivity=4/125
Conductivity=3.2x