If `p_0 = 1.03 xx 10^5 N m^-2, rho_0 = 1.29 kg m^-3` and `g = 9.8 m s^-2` , at what height will the pressure drop to (1/10) the value at the surface of the earth?

The acceleration due to gravity on the surface of moon is 1.7 m s^-2 . What isthe time period of a simple pendulum on the surface of moon if itstime period on the surface of earth is 3.5 s? (gon the surface of earth is 9.8 m s6-2 )

Glycerine flows steadily through a horizontal tube of length 1.5 m and radius 1.0 cm. If the amount of glycerine collected per second at one end is 4.0xx 10^-3 kg s^-1 , what is the pressure difference between the two ends of the tube ? (Density of glycerine = 1.3xx 10^3 kg m^-3 and viscosity of glycerine = 0.83 Pa s). [You may also like to check if the assumption of laminar flow in the tube is correct].

Velocity of light in a liquid is 1.5 xx 10^8 ms^(-1) and in air,it is 3xx10^8 m s^(-1) .If a ray of light passes from this liquid to air ,calculate the value of critical angle.

A player throws a ball upwards with an initial speed of 29.4 m s^-1 :- To what height does the ball rise and after how long does the ball return to the player’s hands ? (Take g = 9.8 m s^-2 and neglect air resistance).

A particle starts from the origin at t = 0 s with a velocity of 10.0 hatj m//s and moves in the x-y plane with a constant acceleration of (8.0hati + 2.0hatj) m s^-2 ,:- At what time is the x- coordinate of the particle 16 m? What is the y-coordinate of the particle at that time?

In Millikan’s oil drop experiment, what is the terminal speed of an uncharged drop of radius 2.0xx 10^5 m and density 1.2xx 10^3 kg m^-3 . Take the viscosity of air at the temperature of the experiment to be 1.8xx 1 0^-5 Pa s. How much is the viscous force on the drop at that speed ? Neglect buoyancy of the drop due to air

Suppose that the particle is an electron projected with velocity v_x = 2.0 xx 10^6 m s^-1 . If E between the plates separated by 0.5 cm is 9.1 xx 10^2N//C , where will the electron strike the upper plate? (|e| =1.6 xx 10^-19 C, m_e=9.1 xx 10^-31 kg.)

What is the density of water at a depth where pressure is 80.0 atm, given that its density at the surface is 1.03 xx 103 kg m^-3 ?

A horizontal straight wire 10 m long extending from east to west is falling with a speed of 5.0 m s^-1 , at right angles to the horizontal component of the earth’s magnetic field, 0.30 xx 10^-4 Wb m^-2 , What is the instantaneous value of the emf induced in the wire?