Why are synthetic polymers often used in place of some natural materials?

When you used the energy in our body to pull the rubber band, it was transformed into elastic potential energy.

While doing a lab, a student found the density of a piece of pure aluminum to be 2.85 g/cm. The accepted value for the density of aluminum is 2.70 g/cm. What was the students percent error?

What was the first human invention to break the sound barrier?

Quartz clock is more appropriate than pendulum clock to measure time

In what state of matter does oxygen exist at room temperature

A freight train traveling with a velocity of - 4. o m/s begins backing into a train yard. if the train's average acceleration is - 0.27 m/s^2 what is the trains velocity after 17s

A current of 19.5 mA is maintained in a single circular loop with a circumference of 2.30 m. A magnetic field of 0.710 T is directed parallel to the plane of the loop. What is the magnitude of the torque exerted by the magnetic field on the loop?

A zero on the kelvin temperature scale is called "absolute zero." a. true b. false

Calculate the speed of a wave on a guitar string which has a mass of 55 g and a length of 30 cm if the tension in the string is 200 N

During a free fall Swati was accelerating at - 9.8m/s2. After 120 seconds how far did she travel? Use the formula = 1/2 * t2 to solve your answer. (Do not forget to keep units in your answer.)