A submarine was situated 450 feet below sea level. If it descends 300 feet. What is its new position?

A submarine was situated at 650 feet below the sea level. If it descends 200 feet, what is its new position?

Ani is scuba diving. She descends 5 feet below sea level. She descends same distance 4 more times. What is Ani's final elevation?

Figure shows an equiconvex lens (of refractive index 1.50 ) in contact with a liquid layer on top of a plane mirror. A small needle with its tip on the principal axis is moved along the axis until its inverted image is found at the position of the needle. The distance of the needle from the lens is measured to be 45.0 cm. The liquid is removed and the experiment is repeated . the new distance is measured to be 30.0 cm. What is the refractive index of the liquid ?

A flagpole stands on a building and an observer on a level ground is 300 feet from the base of the builing . The angle of elevation of the bottion of the flagpole is 30^@ and the height of the flagpole is 50 feet if theta is the angle of elevation of hte top of the flagpole , then tan theta is equal to

An arch on a road is in the shape of semi-ellipse. The breadth of the road is 30 feet. A man 6 feet tall just touches the arch when he stands 2 feet the side . i. Assuming the road level as x-axis (major axis). Find the point C. ii. What is the maximum height of arch (minor axis)?

A diver having a moment of inertia of 6.0 kg-m^2 about an axis through its centre of mass rotates at an angular speed of 2 rad/s about this axis. If he folds his hands and feet to decrease the moment of inertia to 5.0 kg-m^2 what will be the new angular speed?