Always use the safety belt and buckle your child in immediately after putting her in the booster seat. Even if your child's belted in safely, never leave her sitting in a booster seat unattended. Hold off on using booster seats without belts, such as the plastic cube-shaped seats you often see in restaurants, until your child's about 36 months old. These seats are not only dangerous because they lack safety belts, but they're also missing straps for securing the booster to a chair.
Noun. 1. trough-a narrow depression (as in the earth or between ocean waves or in the ocean bed). natural depression, depression-a sunken or depressed geological formation. swale-a low area (especially a marshy area between ridges).
A trough is ï¬lled with water and its vertical ends have the shape of a parabola withtop length 8 ft and height 4 ft. Find the hydrostatic force on one end of the trough.Answer: Z 40 62.5(4ây)(4ây)dy = 62.5 Z 40 (16âyâ4y 3/2)dy = 62.5  2563â2565  = 62.5(256)  215  lbs. 8.2. Solve the initial value ï¬rst order linear diï¬erential equation:y 0 = y +x y(0) = 2.Answer:I.Factor = e R â1dx = e x e âx y 0 â e âx y = xe(e âx y) 0 = xe âx e âx y = âxe â e âx +cy = âx â 1+3e x 13.