What are three physical properties of helium

A car travels in a straight line along a road. Its distance x from a stop sign is given as a function of time t by the equation x (t) = 9t^2-8t^3 m. Find the acceleration (in m/s/s) of the car at t = 4.6 s. Give answer with two decimal places.

The pressure exerted by 15m of liquid is 1500pa. The acceleration due to gravity g=10m/s^2. Calculate the density liquid.

How does seafloor spreading provide further evidence of continental drift

1. When light strikes the second medium what are the two things that happen?

Is momentum more heavily affected by the mass or velocity of an object

average distance of 160.0 cm. Its average time was 5.74 seconds. What is its average speed?

Tools used as nut crackers by chimps and birds

What type of electromagnetic wave does a light bulb and a radio antenna release?

Why was the inclusion of sketches in his notes important to Galileo's studies

7. If your accelerator suddenly gets stuck what should you do?