<span>Which of the following substance are not formed by chemical bonds? </span>A MIXTURE
Answer:
2.74
Explanation:
Magnification = image distance/object distance
Mag = v/u
Given
v = 46cm
u = 16.8
Magnification = 46/16.8
Magnification = 2.74
Hence the magnification is 2.74
Answer:
F = 6666.7 N
Explanation:
Given that,
Mass of a chip, m = 0.1 mg
Initial speed, u = 0
Final speed,
Time of collision,
We know that,
Force, F = ma
Put all the values,
So, the required force is 6666.7 N.
<span>When a magnet moves near a wire, it's changing field causes the electrons in the wire to flow as electric current.</span>
Answer: B superconductors
Explanation:
