Instructions:Select the correct answer. What is a substance? a uniform mixture that can't be separated a mixture that can be separated a single component that can't be separated a single component that can be separated NextReset

Historically, use of fossil fuels has lead to all of the following except: increased exchange of culture and ideas development of faster transportation methods increased availability of products including heat, plastics and medicine increased use of

A car is travelling at 20 km/hr. It speeds upto 60 km/hr in 6 seconds. What is its acceleration?

In which of the following situations does gravity supply a centripetal force? the space shuttle orbiting the Earth a child on a merry-go-round a bike rounding a curve a book falling off a table

A supercomputer can do 136.8 terra calculations per second. How many calculations can it do in a microsecond

A plane is flying 2400 miles from a to b. the speed of the plae is 600mph and the speed of the tailwind is 40 mph how many hours after take off would it b efaster to get to b rather than to return to a in case of emergency

Which law is being demonstrated when a swimmer moves forward through the water?

A camcorder has a power rating of 16 watts. If the output voltage from its battery is 7 volts, what current does it use?

Electromagnetic waves with low frequencies have been used for long-distance underwater communication. These waves most likely belong to which of the following parts of the electromagnetic spectrum? A. gamma rays B. infrared waves C. radio waves D.

A bird sitting high in a tree is an example of an object with what type of energy

The height a ball bounces is less than the height of the previous bounce due to friction. The heights of the bounces form a geometric sequence. Suppose a ball is dropped from one meter and rebounds 95 % of the height of the previous bounce.