Physics Answers

A silica optical fibre has a core refractive index of 1.50 and a cladding refractive index of 1.45. Determine the critical angle at the core cladding interface. *

The plates if parallel plate capacitor are 5mm apart and 2m² in area. The plates are in vacuum. A potential difference of 1kv is applied across the capacitor. Calculate a. The capacitance.b. charge on each plate .c. Electric intensity in the space between them. d. Energy stored in the capacitor.

a metal block measures 10cm * 2cm * 2cm . what is its volume how many blocks each 2cm * 2cm * 2cm have the same total volume

The block of mass m2 in the figure has been adjusted so that the block of mass
m1 is on the verge of sliding. (a) If m1 = 7 kg and m2 = 5 kg , what is the
coefficient of static friction between the table and the block? (b) With a slight
nudge, the blocks move with acceleration of magnitude a. Find a if the
coefficient of kinetic friction between the table and the block is μk = 0.54

-Tidal heating aspect of Astronomy
-link all the relevant physics ideas to each other and to the context to integrate them into your explanation of how or why the physics relates to tidal heating.
-The key physics ideas tidal heating should include:
Newton’s law of gravitation and tidal forces
Centre mass of orbiting systems
Satellite motion (Kepler’s laws)
Synchronous orbits and how they form over time
Orbital resonance of Jupiter’s moons and the implications of this for tidal heating

A force of 200n is inclined at an angle of 120° to another force P. The angle between the 200n force and the resultant force is 50°. Find the magnitude of the force P and the resultant of the two force.

An electric generator delivers a load current of 24A at a terminal voltage of 250v. The generator is driven by a motor,whose output Power is 7.5kw. What is the efficiency of the generator?

How long it will take to fully charge the capacitor?

Describe the max born interpretation of wave function in terms of probability density and state the admissible conditions of wave function

Solve the problems below and show the complete solution.

What is the f of the pendulum on a clock with a L = 5.00 cm long?
f = (1 / 2π) √ (g / L)