How do scientists use radioative decay to date fossils and artifacts

How does energy travel in a mechanical wave? in space in a vacuum in a medium in time I think C

Which of the following is an obstacle to creating computer-based models for tracking a hurricane? 1. Hurricanes form over water, where it is difficult to observe them. 2. Most sources of data about hurricanes are anecdotal and unreliable. 3.

Describe the changes that take place in the movement and arrangement of the particles in an ice cube when it melts

Classify which of the following is a substance: tablero salt, seawater or sand? Explain how you know.

Calculate the Force of Gravity acting on an object that has a mass of 1.3 kg. The object is on Earth so use 9.8m/s2 for the acceleration due to gravity. A. 0.13 N B. 7.5 N C. 12.7 N D. 1270 N

A small 25 kilogram canoe is floating downriver at a speed of 4 m/s. What is the canoe's kinetic energy?

A car traveling on a flat (unbanked), circular track accelerates uniformly from rest with a tangential acceleration of 1.85 m/s2. The car makes it one quarter of the way around the circle before it skids off the track.

A train travels 120 km in 2 hours and 30 minutes what is the average speed

How many constellations are there?

What units are given to the right of the equals sign