A baseball is thrown at 90 mph from east to west over a distance of 60 ft. What is true of the ball's motion?

Its speed is 90 mph to the west.

Its acceleration is 30 mph. .

Its velocity is 90 mph to the west.

Its acceleration is 150 mph. .

What type of light does this light bulb produce most (i. e. at what wavelength does the spectrum have maximum intensity)?

Students in an introductory physics lab are performing an experiment with a parallel-plate capacitor made of two circular aluminum plates, each 11 cm in diameter, separated by 1.0 cm. how much charge can be added to each of the plates before a spark jumps between the two plates? for such flat electrodes, assume that value of 3×106n/c of the field causes a spark.

What structural formula represents 4 electrons shared between two atoms?