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What is buoyancy force.
Whsat is direction of electromagnetic wave.
Find the value of the acceleration due to gravity of a body of mass 0.6kg and at a distance of 6×10-6 from the moon [G=6.7×10-11Nm2kg-2]
The diameter of 20th dark ring in a Newton's Ring system viewed normally is 0.6 c.m. Calculate the thickness of corresponding air film if wavelength of light used is 6X10 cm.
Find the power dissipated in:
(i) an extension cord having a 0.06 Ω resistance, through which 5.00 A is flowing.
(ii) a cord utilizing thinner wire, with a resistance of 0.300 Ω.
A nuclear fission reaction is defined to be a process in which a large nucleus divides into two
roughly equal parts.
(i) What is the potential at a distance of 4.50×10–14 m from one of the parts that has 53 protons in it?
(ii) What is the potential energy in eV of a similarly charged part at this distance?
Q6. A system composed of 2 kg of the above fluid expands in a frictionless piston and cylinder
machine from an initial state of 1 MPa, 100°C to a final temperature of 30°C. If there is no heat
transfer, find the net-work for the process.
A ball of mass m makes a head-on elastic collision with a second ball (at rest) and rebounds with a speed equal to one-fourth its original speed. What is the mass of the second ball?
What is virial theorem
What time dilation.
