Why do fluids exert pressure

The half-life of the reaction gets shorter as the initial concentration is increased. True or False

Net charge of system with one + 6e sphere and another - 4e sphere.

A car travels northwest for 2 hours and covers a distance of 90 miles. What is the average velocity of the car? a 36 mi/h northwest b 42 mi/h northwest C 40 mi/h northwest d 45 mi/h northwest

Use the drop-down menus to complete the statements. When the 5.0 kg cylinder fell 100 m, the final temperature of the water was °C and the change in temperature was °C. When the 5.

When must scientific theories be changed? A. When one experiment shows a surprising result. B. When a new government is elected. C. When an old scientist dies D. When new evidence is discovered

A building 190 feet tall casts a 30 foot long shadow. if a person stands at the end of the shadow and looks up to the top of the building, what is the angle of the person's eyes to the top of the building (to the nearest hundredth of a degree) ?

The frequency of which type of electromagnetic wave is just higher than that of visible light? A. infrared waves B. gamma rays C. x-rays D. radio waves E. ultraviolet rays

Two circular coils are concentric and lie in the same plane. The inner coil contains 140 turns of wire, has a radius of 0.015 m, and carries a current of 7.2 A. The outer coil contains 180 turns and has a radius of 0.023 m.

Which best describes how magnesium (mg) and oxygen (o) bond? they form an ionic bond by exchanging two electrons. they form an ionic bond by exchanging three electrons. they form a covalent bond by sharing one electron.

The coefficient of linear expansion of steel is 12 * 10-6 k-1. what is the change in length of a 25-m steel bridge span when it undergoes a temperature change of 40 k from winter to summer? a. 1.2 cm b. 1.8 cm c. 1.4 cm d. 2.0 cm e. 1.6 cm