Select all the expressions below which represent a 20% discount off the price of an item that originally costs d dollars.

A. 0.8d

B. d-0.2

C. d-0.2d

D. 1-0.2d

An 5kg object is 6 meters up hill. Find potential energy

The sun Why does mining often result in environment Pollution?

Which of the following material offers the lowest resistivity? 1. Wood 2. Salt Water 3. Silver 4. Lead

What is the half life of u-235 according to the graph

A Carnot engine has an efficiency of 0.610, and the temperature of its cold reservoir is376 K. (a) Determine the temperature of its hotreservoir. (b) If 5320 J of heat is rejected to thecold reservoir, what amount of heat is put into the engine?

a man is standing on the edge of a 20.0m high cliff. he throws a rock vertically with an initial velocity of 10.0m/s. how high does the rock go?

The slope of a velocity time graph over any interval of time gives the during that interval

if light travels in a vacuum at 3.00 x 10^8m/s and its frequency is 7.44 x 10^7 what is its wavelength

the half-life of carbon - 14 is 5730 years. What fraction of carbon-14 would remain after 11,460 years?

An object with a mass of 10.9 kg experiences a force of 18.53 N. What is the acceleration of the object? A. 2.2 m/s2 B. 1.7 m/s2 C. 16.83 m/s2 D. 1.3 m/s2