Using the formula for the magnitude of the buoyant force, state under what conditions the body will remain in equilibrium anywhere within the fluid.

Using the formula for the magnitude of the buoyant force, state under what conditions the body will sink in the fluid.

Using the formula for the magnitude of the buoyant force, state under what conditions the body will float in the fluid.

State the formula for calculating work done by a force. Are there any conditions or limitations in using it directly? If so, state those clearly. Is there any mathematical way out for it? Explain.

Answer the following : What is buoyant force ? How does it act on a body which is immersed in a liquid ?

State whether the following statement are True or False : When a body is completely immersed in a liquid, the buoyant force is acting on it due to the liquid is proportional to the volume of the liquid displaced by the body.

Fill in the blanks and complete the following paragraph . (words given: upward, friction,negligible,downward , gravitational , buoyance , very large, electric) When a body falls in air, there are three forces acting on the body : (1) the gravitational force due to the earth, acting........(2) the force of ........ due to air, acting .....(3) the force due to...... with air, acting in the direction oppositeto that of the velocity of the body. Under certain conditions, the force of buoyancy due to air and friction with air can be....... compared to the.......force of the earth. In that case (near the earth's surface) the body falls with almost uniform acceleration (g). Whenever a body moves under the influence of the force of gravity alone, it is said to be falling freely. Strictly speaking, this is true only if the body falls in vaccum.

While rotating an object or while openning a door or a water tap we apply a force or forces. Under which conditions is this process easy for us? Why? Define the vector quantity concerned. How does it differ for a single force and for two opposite forces with different lines of action?

Select the appropriate options and complete the following paragraph (Velocity, independent, initial velocity, dependent, gravity, friction, final velocity , direction ) The motion of any object under the influence of the force of ______ alone is called as free fall. During free fall, there will be no change in the ______ of motion of the object. But there will be a change in the magnitude of ______ of the object due to the gravitational pull of the earth . The acceleration that an object experiences during free fall is ____ of the mass of the object undergoing motion. when a body is dropped freely from a height, its ______ is zero. Whereas when a body is thrown vertically upwards, its ________ is zero .

Use your brain power What would happens if the energy remains trapped in the body of apex consumers even after their death? What will happen if there were no decomposers like microbes and fungi in nature?

A magnetic field set up using Helmholtz coils is uniform in a small, region and has a magnitude of 0.75 T. In the same region a uniform electrostatic field is maintained in a direction normal to the common axis of the coils . A narrow beam of (single species) charged particles all accelerated through 15 kV enters this region in a direction perpendicular to both the axis of the coils and the electrostatic field . If the beam remains undeflected when the electrostatic field is 9.0 xx 10^-5 V m^-1 , make a simple guess as to what the beam contains . Why is the answer not unique ?