According to the Big Bang theory how long ago did the universe started?

A quantity that is ignorant of direction is referred to as a

What is the formula for the expected number of successes in a binomial experiment with n trials and probability of success p?

Define the efficiency of an energy converter.

Briefly describe the assumptions of kinetic theory as applied to gases

What kind of wave is created if a tree falls in a forest?

A cricketer can throw a ball to a maximum horizontal distance of 100m. How much high above the ground can he throw same ball

What is the relationship between the slope of the position graph of an object and its velocity?

Differeniate between thermal energy and heat

The term that describes the time when the sun's are directly over the equator is:

A submarine can detect an approaching enemy submarine using sonar. If a stationary submerged submarine emits a 100kHz tone and receives a tone Doppler shifted by 200Hz, calculate the speed of the enemy submarine if the speed of sound in salt water