Acharge of 6.4 × 10–7 c experiences an electric force of 1.8 × 10–1 n. what is the electric field strength?
a. 1.1 × 10–7 n/c
b. 3.6 × 10–6 n/c
c. 8.2 × 100 n/c
d. 2.8 × 105 n/c

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

If steel is more dense that lake water, why can a boat float

A5 foot by 5 foot box culvert is buried 6 feet beneath the surface of the ground. a crosssection of this very long culvert (into and out of the page) is illustrated below. assume that the soil in which the culvert is buried has the following properties: jt = 120 pcf, w = 12%, ko = 0.50, ka = 0.33, and kp = 3.00. calculate the total horizontal force per unit length of culvert (fh) felt on one of the vertical faces of the culvert.