If element x has 51 protons, how many electrons does it have?

What formed as a result of a hot spot? a) The San Andreas fault b) Mount St. Helens c) The Mid Atlantic Ridge

What is the wavelength of a proton traveling at a speed of 6.21 km/s? what would be the region of the spectrum for electromagnetic radiation of this wavelength?

The idea that mental states are dispositions to behave in particular ways in certain Circumstances is known as

A wave has a wavelength of 9 mm and a frequency of 6 hertz. What is its speed?

A motorist drives 200 km from one city to another in 2.50 h but makes the return trip in only 1.60 h. what is the average speed for the total trip?

Skeletal muscle cells have large stores of ATP that are readily available and alone can provide energy for maximal exercise lasting 30-60 seconds.

A catcher "gives" with a baseball when catching it. If the baseball exerts a force of 475 N on the glove such that the glove is displaced 8.97 cm, how much work is done by the ball? Answer in units of J.

Which of the following is the best sign that cooking pancake batter causes a chemical change

The electric field near the earth's surface has magnitude of about 150n/c. what is the acceleration experienced by an electron near the surface of the earth? express your answer to two significant figures and include the appropriate units.

Minerals are considered to be Answer made out of rocks the building blocks of rocks extremely rare and valuable difficult to find