REAL ANSWERS ONLY EMERGENCY A rock is thrown off a cliff by 1990's MLB pitcher Jim Abbott. Jim throws the rock horizontally at
10 m/s.
How fast is the rock moving horizontally right before it hits the ground?
What is the vertical acceleration of the rock during its fall?

Acertain radio station broadcasts radio waves that have a wavelength of 298cm what is its broadcast frequency?

Charge is distributed along the entire x-axis with uniform density λ. how much work does the electric field of this charge distribution do on an electron that moves along the y-axis from y = a to y = b? (use the following as necessary: a, b, ε0, λ, and q for the charge on an electron.)

Efficiency is the ratio of to for a system a)power in to power in b)power in to power out c) power out to power out d) power out to power in