A football player runs 20 meters North of a football field, and then 15 meters East. The total motion lasted 15 seconds. What was his average speed

How much potential energy does a 1kg mess have 10m off the ground?

Which term describes the difference in electrical charge across a membrane? 1. Resting potential. 2. Electrical potential. 3. Membrane potential. 4. Electrical current.

The acceleration due to gravity on Jupiter is greater than that on Earth. On Jupiter, a person will weigh.

A 49 Newton rock is lifted 2 meters in 5 seconds. How much work is done? What power is used?

Which piece of evidence did Alfred Wegener use to develop the theory of continental drift? A. tectonic activity concentrated in certain areas B. the shape of the continents C. paleomagnetism of the seafloor D. deep-sea mountain ranges

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.