Name the biochemical cycle shown in the below figure. How would the flow of the nutrient in the cycle be affected due to large scale deforestation?

A particle of charge q is moving with velocity v in the presence of crossed electric field E and magnetic field B as shown. Write the condition under which the particle will continue moving along x-axis. How would the trajectory of the particle be affected if the electric field is switched off?

Five charges, q each, are placed at the corners of a regular pentagon of side a as shown in the figure. How would your answer to be affected, if pentagon is replaced by n-sided regular polygon with charge q at each of its corners?

A heat engine carries one mole of an ideal monoatomic gas around the cycle as shown in the figure, the amount of heat added in the process AB and heat removed in the process CA are :

If the universe was to shrink to the size of earth, how large would be the Earth on this scale?

How man affected phosphorus cycle?

A current of 10 A flow around a closed path in a circuit which is in the horizontal plane as shown in the figure. The circuit consists of eight alternative arcs of radii r_(1)=0.08m and r_(2)=0.12m . Each subtends the same angle at the centre. An infinitely long straight wire carrying a current of 10 A is passing throgh the entre of the above circuit vertically with the direction of the current being into the plane of the circuit. What is the force acting on the wire at the centre due to the current in the circuit? What is the force acting on the arc AC and the straight segment CD due to the current at the centre?

Given below is a figure of carbon cycle in nature. Write sources of carbon marked A.

Two large flat parallel sheets A and B having a uniform charge density + sigma are held as shown in the figure. Graphically, represent the variation of electric field due to the two sheets as one moves from the point O to P.