An aircraft is travelling at constant speed in a horizontal circle with centre Q. Each diagram below shows a tail view of the aircraft, the dotted line representing the line of the wings and the circle representing the centre of gravity of theair craft. Which one of the diagram correctly shows the force acting on the aircraft ?

A metallic shell has a point charge 'q' kept inisde its cavity. Which one of the following diagrams correctly represents the electric lines of forces?

A metallic shell has a point charge 'q' kept inisde its cavity. Which one of the following diagrams correctly represents the electric lines of forces?

A metallic shell has a point charge .q. kept inside its cavity. Which one of the following diagrams correctly represents electric lines of forces

A car of mass m travelling at speed v moves on a horizontal track. The centre of mass of the car describes a circle of radius r . If 2a is the separation of the inner and outer wheels and h is the height of the centre of mass above the ground, show that the limiting speed beyond which the car will overturn in given by v^(2)=(gra)/h

A circle is drawn with B as centre. The circie is passing through the points P and Q in the number line. If P , represents 1 and B represents -1 a) What is the radius of the circle? b) Which number represents the point Q? c) Find the perimeter of the triangle AQP.

Fig.1.42 shows three pieces of card board of uniform thickness cut into three different shapes. On each diagram draw two lines to indicate the position of the centre of gravity G.

The diagram below shows two pulses traveling towards each other in a uniform medium with same speed . Pulses in the figure are at the same distance from X and has same height & width. Which diagram best represents the medium when the pulses meet at point X ?