C. A cation as a cation is positively charged and when an atom loses an electron it forms a positive ion.
Answer:
A man pushes very hard for several seconds upon a heavy rock, but the rock does not budge. Has the man done any work on the rock? Explain. No, because work=force X distance and the rock did not move so the distance was zero.
Answer:
N = 1364 N
Explanation:
given data
accelerate upward = 5.70 m/s²
mass = 88.0 kg
solution
normal force is in upward direction so, weight of the student in downward direction and acceleration is in upward direction so formula is express as
N - mg = ma ...........................1
N = m × (g+a)
put here value
N = 88.0 × (9.8 + 5.70)
N = 1364 N
<u>Answer</u>:
Speed = 3.33 m/s
<u>Explanation</u>:
Formula:
Speed = distance / time
<em>Here distance is 800 metres and time is 240 seconds</em>
<em>Using the formula:</em>
Speed = 800 / 240
Speed = 3.33 m/s