Answer:
Explanation:
a ) Let breadth be L , then length will be 1.5 L
Since it is a meter scale , the least count is 1 m.m. So
maximum possible error in a measurement is 1 mm.
In both the measurement of length and breadth , absolute
uncertainty will be 1mm.
Hence there is no difference in absolute uncertainty of their measurement.
b ) percent uncertainty in the measurement of length
= 1 / 15L%
percent uncertainty in the measurement of breadth
1 / 10L%
In breadth it will be higher by
( 1/10L - 1/15L)/ 1/10L
= 1/3
c ) Uncertainty in the measurement of R= 1 %
Area A = π R²
ΔA/A X100 = 2 X ΔR/R X 100
Percentage uncertainty in A = 2 X percentage uncertainty in R
= 2 X 1
=2 %
Therefore percentage accuracy in the calculation of area
= 2 %.
Answer:
A dot product of two vectors is also called the scalar product. ... The difference between the dot product and the cross product of two vectors is that the result of the dot product is a scalar quantity, whereas the result of the cross product is a vector quantity.
Explanation:
Hope it is helpful.....
Answer:c
Explanation:
If the Force of gravity suddenly stops acting on Planets then Planets would continue to move straight in the initial direction.
Gravity constantly acts on Planets to change their trajectory each instant thus in absence of it if a planet is moving in a circular path then it would follow the path of the tangent to the circular path as gravity force is absent to change its trajectory.
Answer:
SI unit of k (spring constant) = N/m
Explanation:
We have expression for force in a spring extended by x m given by
F = kx
Where k is the spring constant value.
Taking units on both sides
Unit of F = Unit of k x Unit of x
N = Unit of k x m
Unit of k = N/m
SI unit of k (spring constant) = N/m
Answer:
The darts hit very different areas of the board.
Explanation:
