What is the dot product of a = - 2i - 5j and b=i - 4j

An object falls because of gravity at a rate of - 980 cm/s2 ( - sign is indicative of a downward direction) for 10. seconds. If it starts from rest (vo = 0) and its position starts from do = 0.0, where is it 10. seconds later? -4900 -49 -490

What is the correct definition of a compression?

Hydroelectric power is a good source of heat energy. a. true b. false

A giant squid is accelerating through the ocean at 0.5 m/s2. If the mass of the squid is 800 kg, what is the magnitude of the net force? A. 1600 N B. 80 N C. 800 N D. 400 N

Imagine that you're observing a collision. Which action would allow you to determine whether the collision is inelastic? A. Measure the force of impact. B. Observe whether the colliding objects change their shape. C.

When light is scattered while spreading out through the atmosphere, the light rays A) converge and follow the same direction. Eliminate B) deflect randomly in multiple directions. C) bounce back toward their initial direction.

What is Precambrian time?

Calculate the kinetic energy in joules of a 1500 kg automobile moving at 19 m/s

What is a fault? A. the name for 2 opposing forces B. a type of crust that moves under heavier crust C. A crack in earths crust where movement occurs D. A volcanic region where new material is being created

18. Which does not affect the strength of an electromagnet? A the current in the solenoid B the temperature of the coil OC the number of loops in the coil D the type of ferromagnetic core