The critical angle at the boundary between a ruby and the air is 34.6º. Use this to calculate the refractive index of this ruby. Give your answer to

two decimal places.

24 Fig. 24.1 shows a liquid dropper used to draw a liquid from a bottle of medicine. The squeeze bulb of the dropper is squeezed and then released so that liquid from the bottle is sucked up into the tube of the dropper.

When is a robot considered a cyborg.? A) when it replaces a human in a job B) when part of it is human C) when it is used in medical procedures D) when part of it malfunctions

Frame S' passes frame S in the usual way (positive directions). An object also moves in the positive direction. Which is true? The object's speed relative to S is greater than its speed relative to S'.

What is the relative humidity when the dry-bulb temperature is 16°c and the wet-bulb temperature is 14°c?

Gases have two specific heat values ... ? a: one at constant temperature and another at constant pressure b: one at constant volume and another at constant temperature c: one at constant volume and another at constant pressure

Describe the factors that form deep currents

A comet is cruising through the solar system at a speed of 50000 kilometers per hour for 4 hours time. What is the total distance traveled by the comet during this time in kilometers, miles, and light years?

A gas in a closed container is heated with 12J of energy, causing the lid of the container to rise 3m with 5N of force. What is the total change in energy?

What are illuminated objects?

During one year a population of blue jays has zero population growth. which must be true about the blue jay population at the end of the year compared to the beginning of the year?