What factors may contribute to aging?

A. Cells stop dividing after 50 divisions.

B. Cells become more and more damaged.

C. Genes "tell" cells to stop dividing.

D. all of the above

The hammering on a train track is often heard twice by workers farther down the track; first as the sound travels through the steel and second as the sound travels through the air. This suggests which graph is true?

A transfer by work from the system, an elevation decrease of 50 m, and an increase in velocity from 15 m/s to 30 m/s. The specific internal energy, u, decreases by 5 kJ/kg and the acceleration of gravity is constant at 9.7 m/s².

To make and sell fireplaces, Hearth, Inc., buys igniters, tubing, and other parts from Inflame Parts and installs them without modification. If the parts are defective, strictly liable for any damage caused by the defects.

Why are earthquakes different strengths?

Find the range for the projectiles with the following speeds and angles: Angle Initial Speed 16.9° 48.3m/s

A car traveling 26 m/s starts to decelerate steadily. It comes to a complete stop in 13 seconds. What is it's acceleration. ___m/s^2

Less work was done. What is one possible reason why this has happened? A. There was more force applied; therefore, there was less movement. B. There was less force applied; therefore, there was more movement. C.

What are the optimal conditions for using a solar oven?

What is the magnifying power of an astronomical telescope using a reflecting mirror whose radius of curvature is 5.5 mm and an eyepiece whose focal length is 2.9 cmcm? Follow the sign conventions.

Who was the first person to observe a sign of molecular motion?