Find the electric potential VP at point P. [Hint: To input a natural logarithm into the answer box, simply type the letters "ln" (for example ln(x) is the natural logarithm of x).] Express your answer in terms of d, L, Q, and ϵ0.

What is the length x of the side of the triangle below? (hint: use the cosine function)

Ajet plane has a sound level of 120 db at a distance of 60 m. what is the q23. sound level at a distance of 6.0 km? (60)2 (6000)? om solution 80db db, hint: 16x assume ultrasound waves travel through the body of an animal at 1540 q24. m/s. if a 30,000 hz signal were reflected off a portion of a heart which was moving toward the source at 3 m/s, what frequency signal would return to the stationary source? solution 30.117hz

Aspring has a natural length of 8 m. if a 12-n force is required to keep it stretched to a length of 10 m, how much work w is required to stretch it from 8 m to 16 m? (round your answer to two decimal places.)