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What are the hazards to our environment nowadays?
Pakistan Studiesland and environment
Write the names of five glaciers located in Pakistan.
Pakistan Studiesland and environment
Write the types of pollution.
Pakistan Studiesland and environment
In which mountain range Tochi Pass and Gomal Pass are situated?
Pakistan Studiesland and environment
State five causes of soil pollution.
Pakistan Studiesland and environment
Describe the location of Pakistan.
Pakistan Studiesland and environment
Write five reasons for decreasing of forests.
Pakistan Studiesland and environment
Explain what is meant by stable, unstable, and neutral equilibrium.
PhysicsTurning effect of forces
Define terminal velocity?
PhysicsTurning effect of forces
How does a paratrooper come down?
PhysicsTurning effect of forces
Why there is a need for a second condition for equilibrium if a body satisfies the first condition for equilibrium?
PhysicsTurning effect of forces
What is the second condition for equilibrium?
PhysicsTurning effect of forces
Explain the first condition for equilibrium.
PhysicsTurning effect of forces
When a body is said to be in equilibrium?
PhysicsTurning effect of forces
Define a couple. Describe its role in steering wheel double-arm spanner?
PhysicsTurning effect of forces
List the center of gravity of some symmetrical objects?
PhysicsTurning effect of forces
Define the center of gravity?
PhysicsTurning effect of forces
Explain how the center of mass helps the system to move as well as rotate?
PhysicsTurning effect of forces
Describe the principle of the moment?
PhysicsTurning effect of forces
What do you mean by newton-meter (Nm)?
PhysicsTurning effect of forces
Define the moment arm.
PhysicsTurning effect of forces
What do you mean by a line of action of a force?
PhysicsTurning effect of forces
Why it is easy to tighten a nut using a spanner of the longer arm than a spanner of the shorter arm?
PhysicsTurning effect of forces
Why the handle of a door is fixed near the outer edge a door?
PhysicsTurning effect of forces