Why do you think a pregnant woman needs more energy from food than a woman who is not pregnant?

What happens if the polar jet stream shifts to bring air from the north farther south

1. if an egg has a mass of. 1k and its dropped from a height of 5 meters, calculate its potential energy at the top 2.

A vehicle moves in a straight line with an acceleration of 4 km/h2. By how much does the speed change each second? Answer in units of km/h.

What type of system allows matter and energy to enter and exit

A body is accelerated continuously. What is the form of the graph? a cubic b inverse c linear d quadratic

When blue light of wavelength 450 nm falls on a single slit, the first dark bands on either side of center are separated by 45.0

An object is moving east, and its velocity changes from 65 m/s to 25 m/s in 10 seconds. Which describes the acceleration? 4 m/s2 in negative acceleration 4 m/s2 in positive acceleration 9 m/s2 in positive acceleration 9 m/s2 in negative acceleration

Two students walk in the same direction along a straight path at a constant speed-one at 0.90 m/s and the other at 1.90 m/s. •How far would the students have to walk so that the faster student arrives 5.50 min before the slower student? A.) 460s B.

During the process of accretion, each planet-in-the-making, or proto-planet, grew in size and mass. The amount of gravity for the proto-planets is best represented by which graph?

Theories and Laws. • How are they alike? • How are they different? • Can you explain why scientific theories will change over time? • Give an example of a scientific theory that has changed.