A geyser shoots water straight up into the air with a velocity of 28.0 m/s. How high does the water go before it starts coming back down? (Hint: PEinitial = 0,
KEfinal=0)
A. 1.43 m
B. 40.0 m
C. 80.0 m
D. 23.4 m

a small object of mass 3.66 g and charge -17.6 µc is suspended motionless above the ground when immersed in a uniform electric field perpendicular to the ground. what are the magnitude and direction of the electric field?

i don't understand is there any other way you can rephrase it plz let me know in the comments and i will do it.

explanation:

a longitudinal wave moves energy that is to the direction of the wave’s movement. - true

heat the gas and measure the pressure