How does an eye doctor use a lens

Which of the following is a way to measure the sequence of significant events on Earth over time? Fossil time Geologic time Radioactive time Relative time

How high up is a 3 kg object that has 300 joules of energy

100Gw x 35ms (note: a watt is a joule per second)

What are three behaviors of light that cause it to be through of as a wave?

A tuning fork vibrating at a frequency of 512hz is held over the top of the jar filled with water and filled with a tap at the bottom. If the jar is 60cm tall and the speed of sound is 350ms-1, determine 1st and 2nd resonance.

Which of the following is a vector quantity? A. 83 ounces of liquid B. 55 km/hr in a truck C. 15 seconds of travel D. 10 m/s down

Which of the following best describes the ultraviolet catastrophe of blackbody radiation? A. As energy is added to an object acting as a blackbody radiator, its emissions move to the ultraviolet part of the electromagnetic spectrum. B.

Is an engine-activated booster unit that reduces the effort required to apply the hydraulic brakes

A box is lowered using a rope. If the acceleration of the box, is 2.5 m/s2 (downward) and the tension in the rope is 31 N, what is the mass of the box (in kg) ?

On a very hot summer day, the rooms on the first floor of a house stay cooler than the rooms on the second. Which form of thermal energy flow causes this to occur? A) Conduction B) Convection C) Kinetic D) Radiation