Identify the product of genetic engineering.

inserting a spider’s silk gene in a goat’s dna to weave silk threads

choosing livestock for mating to pass on their genes for being large to offspring

intentionally pollinating two strawberry plants that produced sweet berries

fishing for large fish, leaving small fish to pass on their genes to offspring

What is the momentum of a 47-gram tennis ball that is traveling at 40 m/s

Aspring with an unstrained length of 0.071 m and a spring constant of 2.6 n/m hangs vertically downward from the ceiling. a uniform electric field directed vertically upward fills the region containing the spring. a sphere with a mass of 5.29 10-3 kg and a net charge of +7.2 µc is attached to the lower end of the spring. the spring is released slowly, until it reaches equilibrium. the equilibrium length of the spring is 0.058 m. what is the magnitude of the external electric field?

Dentist's chairs are examples of hydraulic lift systems. if the chair weighs 1,600 n and rests on a piston with a cross-sectional area of 1,440 cm2, what force must be applied to the small piston, which has a cross-sectional area of 72 cm2, to lift the chair?