Answer:
A. Archinedes
Explanation:
Archimedes' principle states that a body immersed in a fluid is subjected to an upwards force equal to the weight of the displaced fluid. This is a first condition of equilibrium.
Answer:
-2.63 Joules
2.63 Joules
Explanation:
= Initial compression = 5.89 cm
= Final compression = -15.4 cm
k = Spring constant = 260 Nm
Work done by a spring is given by

Work done by the spring is -2.63 Joules.
Change in kinetic energy is given by

Here, it is assumed that change in kinetic energy is zero as velocity and amlitude are not mentioned.
So,

The work done by the applied force is 2.63 Joules.
Answer: No
Explanation: colour of substance appears when molecules of apple
Absorb wavelengths of counter colour, also green light.
Counter colours are green-red, violet -yellow and blue-orange
Answer:
Explanation:
Magnetic field = permeability x turn density x current
Magnetic field = 0.22T
turn density = 4150 /1.6 = 2593.75 t/m
permeability : µ = k µ°
µ°= 4 π 10^-7
k = 1
I = 0.22 / 4 π 10^-7 * 2593.75 = 0.22 10^7 /32594 = 67.497 A