Recently Active Physics Questions

If you walk 5.0 m horizontally forward at a constant velocity carrying a 10-N object, the amount of work you do is  ...

m grams of a gas of molecular weight M is flowing in an insulated tube with velocity v.If the system is suddenly stopped then find the rise in temperature. ...

In a series L–R growth circuit, if maximum current and maximum induced emf in an inductor of inductance 3mH are 2A and 6V respectively, then the time constant of the circuit is ...

Three charged balls A B C are thrown at the same time from the top of a very high building with velocities mentioned. vA=3j-3i vB=3j vC=6j+2i All the balls are of same mass.Horizontal is X direction and vertically up is Y dir ...

Two particles are projected from the ground,one vertically upwards and one 60 deg above the horizontal.What will be the separation between them after t seconds? ...

There will be an increase in potential energy of the system, if work is done upon the system by ...

Figure (i) shows a conducting loop being pulled out of a magnetic field with a speed v. Which of the four plots shows in figure (ii) may represent the power delivered by the pulling agent as a function of the speed v *Image* ...

A car moves along a horizontal circular road of radius r with velocity v. The coefficient of friction between the wheels and the road is mu . Which of the following statements is not true ...

A fish rising vertically up towards the surface of water with speed 3 ms–1 observes a bird diving vertically down towards it with speed 9 ms–1. The actual velocity of bird is *Image* ...

A short linear object of length l lies along the axis of a concave mirror of focal length f at a distance u form the pole of the mirror. The size of the image is approximately equal to ...

n moles of an ideal gas is supplied heat such that its temperature changes from T1toT2 and pressure from P1 to P2.Then the change in entropy of the system ΔS is?? ...

A gas is enclosed in a vessel of volume V at a pressure P.It is being pumped out of a vessel by means of a piston pump with stroke volume v.Find the pressure of the gas in the vessel after n strokes. ...

A gas is enclosed in a vessel of volume V at a pressure P.It is being pumped out of a vessel by means of a piston pump with stroke volume v.Find the pressure of the gas in the vessel after n strokes. ...

The ratio of adiabatic Bulk modulus to the isothermal bulk modulus of a perfect gas with f degrees of freedom will be ? ...

A column of liquid is concentrated i a horizontal tube which is open at both ends.The change in temperature doers not alter the length of this liquid column in the tube.If α be the coeff of linear expansion of the material o ...

why there is always a phase change of pie whenever reflection takes place? ...

A point object O is placed between two plan mirrors as shown is fig. The distance of the first three images formed by mirror from it are *Image* ...

Two plane mirrors A and B are aligned parallel to each other, as shown in the figure. A light ray is incident at an angle of 30o at a point just inside one end of A. The plane of incidence coincides with the plane of the figu ...

1) Is work done by a force only when force and displacement are parallel to each other? 2) A man is lifting a body vertically upward? What are the forces acting on the body? What is the sign of work done by these forces? ...

A block of mass 2 kg is to be lifted with constant velocity by applying force F down the rope that passes over pulley having coefficient of friction μ.Find the value of the pull required. Ans is 2geπμ ...

Two identical circular loops of metal wire are lying on a table without touching each other. Loop A carries a current which increases with time. In response the loop B ...

Two rods of length L2 and coefficient of linear expansion α2 are connected freely to a third rod of length L1and coefficient of linear expansion α1 to form an isosceles triangle.The arrangement is supported on a knife edge ...

Parallel rays fall perpendicularly on a surface of a solid sphere of glass. The radius of the sphere is 5cm and refractive index of glass is 1.5. Where will the rays meet ? ...

can i join only chemistry from edudigm? ...

A particle of mass 1 gm executes an oscillatory motion on a concave surface of radius of curvature 2m. If the particle starts its motion from a point at a height of 1 cm from the horizontal and the coefficient of friction is ...

An inductor coil stores energy U when a current i is passed through it and dissipates energy at the rate of P. The time constant of the circuit when this coil is connected across a battery of zero internal resistance is ...

1)Displacement of a particle is s=0.5t4-5t3+12t2-1.At what instants acceleration of particle is 0? (Ans-5 sec) 2)y=2x3+6x2+8x+120.At what time the particle has greatest speed? (ymin=110,ymax=174) ...

A force overrightarrow{F,}=-K(yhat{i}+xhat{j}) (where K is a positive constant) acts on a particle moving in the xy-plane. Starting from the origin, the particle is taken along the positive x-axis to the point (a, 0) and then ...

using the method of integration for bodies having continuous distribution of mass.... we use... Xcm = 1/M ∫x.dm we all know this (not sure)... but here's what is annoying me... on finding the COM of a ring... we set y = r s ...

An LR circuit with a battery is connected at t =0. Which of the following quantities is not zero just after the connection ? ...