When a hypothesis is confirmed true by evidence from many experiments, it becomes widely accepted by scientists, and it gets a new name: 'Theory' .
Answer:
Explanation:
The cross product of two vectors is given by
Where, θ be the angle between the two vectors and \widehat{n} be the unit vector along the direction of cross product of two vectors.
Here, K x i = - j
As K is the unit vector along Z axis, i is the unit vector along X axis and j be the unit vector along axis.
The direction of cross product of two vectors is given by the right hand palm rule.
So, k x i = j
j x i = - k
- j x k = - i
i x i = 0
The law of superposition in sedimentary and extrusive igneous rocks states that an upper bed of rock is younger than a lower one, provided that earth-movements have not reversed the order. Radioactive dating is the use of radioactive elements to determine the age of different items. The premise of radioactive decay is dependent on the fact that unstable elements break down at a fixed rate into other elements. Hence the age of rocks containing radioactive elements can be determined.
Answer:
Explanation:
Given
Diver is at a depth of inside the water
As we go down pressure increases due to the weight of liquid column above us
Pressure difference is given by
Where =density of liquid
h=depth
g=acceleration due to gravity
So external-internal pressure difference is
Answer:25.23 V
Explanation:
Given
no of turns
Magnetic Field
Area of rectangular coil
Change in magnetic Flux is given by
(b)Emf induced change in Flux with respect to time and it can be given by
The magnitude of emf induced is