A locomotive has a mass of 200,000kg. It is moving at 4.5m/s. Find its momentum.

Which of the following is true for a parallel circuit? A. The current is the same across all resistors in the circuit. B. The voltage is the same across all resistors in the circuit. C. As more resistors are added, the current will decrease. D.

How much of the universe is believed to consist of ordinary atoms that can be detected? A.) 75% B.) 20% C.) 3%

If the length of the simple pendulum is increased by 44% then what is the change in time period of pendulum

When you walk along a floor, what pushes you along?

A subway train accelerates from rest at one station at a rate of 1.30 m/s^2 for half of the distance to the next station, then decelerates at this same rate for the second half of the distance.

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.