Answer:
Actually, surface tension is the to force per unit length. That means formula for surface tension is = force/length . As we know that the dimensional formula for length is L . And that for force is MLT^-2. So the dimensional formula for surface tension can be obtained by dividing the dimensional formula of force and length.
Explanation:
Answer:
Explanation:
Given:
- refractive index of the glass plate,
- thickness of the glass plate,
- wavelength of the source light,
<u>We know that the refractive index of a medium is given as:</u>
Hence the no. of wavelengths in the glass:
Answer:
The displacement is 20 m northward.
The distance is 44 m
Explanation:
Let northward motion be in positive direction
Let southward motion be in negative direction
Dispalcement is the shortest path covered by the hockey puck at a specified direction.
The dispalcement of the hockey puck will be calculated as;
Displacement = 26 m northward - 12m southward + 6 m northward
Displacement = 20 m in northward direction
Distance is the total path covered by the hockey puck.
Distance = 26 m + 12m + 6 m
Distance = 44 m
Answer:
Explanation:
Given
Speed v =27m/s
Distance covered after skidding = 41.5m
Acceleration a = ?
Using the equation of motion
v² =u²+2aS
27² = 0²+2a(41.5)
729 = 0+83a
a = 729/83
a = 8.78m/s²
Hence it's acceleration is 8.78m/s²
I'd have thought at least several miles. the atom is mostly empty space (I'm tempted to say "fresh air", but that's wrong, so I can't, so I won't)