Answer:
F= M×G is the formula of force
Answer:
B). Kelvin Scale
Explanation:
Kelvin scale is the absolute scale which is used to express temperature in English System
We have different temperature scales
1) Fahrenheit Scale
Generally use in British system of units
2) Celcius Scale
It is used to given temperature of different scales and its relation with kelvin
3) Rankine Scale
It is used in thermodynamic scales with large temperature range
Answer:
Explanation:
Given
velocity of boat with respect to river
velocity of river is
River is 3.5 km wide
Suppose boat leaves at an angle of with vertical such that it reaches exactly opposite end of initial Point
Therefore
component will balance the river Flowso that sin component helps to cross the river
Answer:
A skater glides along a circular path. She defines a certain point on the circle as her origin. Later on, she passes through a point at which the distance she has traveled along the path from the origin is smaller than the magnitude of her displacement vector from the origin.
So here in circular motion of the skater we can see that the total path length of the skater is along the arc of the circle while we can say that displacement is defined as the shortest distance between initial and final position of the object.
So it is not possible in any circle that arc-length is less than the chord joining the two points on the circle
As we know that arc length is given as
length of chord is given as
so here
so we have