Question 2.A new star with a mass of 3.4 x 1031 kg is discovered 6.7 x 1011 m away from our sun whose mass is2.0 1030 kg . What is the force of
gravitation between this star and our sun? *
G = 6.67 X10-11 N•m²/kg?
O A.1.0 x 1028 N
B. 1.5 x 1038 N
C. 6.8 x 1039 N
D. There is no gravitational force between them because stars have no gravity.

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.