Inside a star the force of gravity is balanced by

Marie and Calvin dissolved 10 grams of KNO3 in 100 grams of water at 25oC. Next they added 5 grams more.

Reducing access to waterways will lead to an increase in human impact on waterways. T/F

How is the carbon left behind by dinosaurs millions of years ago stored today

A platinum wire that is 1.20 m long has a radius of 0.500 mm and is fixed at ends. In its third harmonic it vibrates at 512 Hz. The density of platinum is 21.4 * 103 kg/m3. What is the tension in the wire?

You throw a bouncy rubber ball and a wet lump of clay, both of mass m, at a wall. both strike the wall at speed v, but while the ball bounces off with no loss of speed, the clay sticks.

The elements in group 17 of the periodic table are called halogens. all halogens have the same?

Baby Susie's pediatrician notices that one of her eyes rotates outward and that she does not appear to be using it for vision. What is her condition and what does the pediatrician recommend?

All the interconnected paths of energy flowing from species to species in an ecosystem is called a a. trophic level. b. food chain. c. detrital food web. d. food web.

A firefighting crew uses a water cannon that shoots water at 25.0m/s at a fixed angle of 53.0 degrees above the horizontal. The firefighters want to direct the water at a blaze that is 10.0 m above ground level.

Sulfur oxides (SO2) are responsible for A) global warming. B) greenhouse gases. C) producing acid rain. D) destroying the ozone layer.