A witch throws a frog into a cauldron with an initial speed of 4m/s in the horizontal direction. The cauldron is 2 m away. What was the vertical speed of the frog?

How is sound energy produced a. vibrating objects b. objects being heated c. temperature differences d. stationary objects

You are given a vector a = 125i and an unknown vector b that is perpendicular to a. the cross-product of these two vectors is a × b = 98k. what is the y-component of vector b?

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.)