Answer:
Option B is the correct answer.
Explanation:
Period of simple pendulum is given by the expression
, where l is the length of pendulum and g is the acceleration due to gravity value.
So if we have a simple pendulum with length l we can find its period. Using the above formula we can calculate acceleration due to gravity value of that place.
So using simple pendulum we can measure acceleration due to gravity value.
Option B is the correct answer.
Answer:
15 cm
Explanation:
= Diameter of the coin = 15 mm
= Diameter of the image of coin = 5 mm
= distance of the coin from mirror = 15 cm
= distance of the image of coin from mirror = ?
Using the equation


= - 5 cm
= radius of curvature
Using the mirror equation


= - 15 cm
Answer:

Explanation:
Since the electrons are undeflected,
Magnetic force = Electric force
evB = eE
v = E/B

Answer:
6m/s
Explanation:
- Acclⁿ = 3m/s²
- Displacement = 6m .
- Initial velocity = 0m/s .
- Final velocity = ?
We know that ,
2as = v² - u²
2 * 3m/s² * 6m = v² - (0)²
v² = 36m²/s²
v = √36 m²/s²
v = 6m/s
Hawaii for sure.
Well, Hawaii is hot (most of the time I think) and Alaska is always freezing (or at least cold). So hawaii.