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The arms of a U-shaped tube have circular cross-sections. A lid that seals the wider arm requires a force of 45 N to remove it. The tube is filled with water and the narrow arm is fitted with a piston. If the maximum amount of force you can apply with your hand to the piston is 17 N, what is the minimum ratio of the diameters in the tube dbig/dnarrow in order for you to be able to pop out the lid?

The plot below shows a mass oscillating with Simple Harmonic Motion, following x = xm cos (ωt + φ). What are the period T and phase φ?

An object of mass 4 kg and volume 0.003 m3 is submerged in water (with density of 1000 kg/m3) and then released. What will be the initial acceleration of the object in m/s2? Assume downwards to be the positive direction.

What is a bond?

Consider a spherical planet of radius 3000 km where the gravitational acceleration on the surface is 4 m/s2. A satellite orbiting this planet has a period of 3 hours. What is the radius of the orbit of the satellite?

Name the organelle (marked “A”) and in detail describe its function in the cell (a short paragraph).

Two satellites are in circular orbits around the Earth. Satellite A orbits with three times the velocity of satellite B. What is the ratio of satellite B’s orbital radius to that of satellite A, rB/rA?

Consider a spherical planet of radius 4000 km where the gravitational acceleration on the surface is 3.5 m/s2. A satellite orbiting this planet has an orbital radius of 5000 km. What is period of the satellite in hours?

A patient is recovering from a thyroidectomy. The nurse knows to look for the earliest signs and symptoms of hypocalcemia which include which of the following:

A patient with esophageal cancer has a white blood cell count of 2000.  The nurse should question which of the following orders: