How much equal charge should be placed on the earth and the moon so that the electrical repulsion balances the gravitational force of 1.98×1020n? treat the earth and moon as point charges a distance 3.84×108m apart.

Lymphocytes known as blastocysts make antibodies that fight infection. select the best answer from the choices provided t f

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.

Aa a of 22 m/s at an of 36.9 .be . a. b. c. (3)x y of? (3)go? (4) () it to to ?