Describe three safety procedures you should always follow when conducting a scientific investigation.

A suitcase with a mass of 2 kg has a weight of 18 n what is the acceleration due to gravity on that planet

The radius of the earth is 6378 km. What is the diameter of the earth in meters?

Water cools from2oC to - 2oC. During this time, what happens to the motion of the molecules? A) The motion of the molecules stops. B) The motion of the molecules increases. C) The motion of the molecules decreases.

What is the electrical charge of a calcium ion that has lost an electron?

The angular acceleration of a wheel is given in rad/s2 by 48 t 3 - 11t 4, where t is in seconds. if the wheel starts from rest at t = 0.00 s, when is the next time the wheel is at rest?

Approximately how many kelvins are equal to 60 c? a. 289k b. 323k c. 333k d. 413k

What are two ways to change velocity?

What is the main optical element of a refracting telescope?

Two water manometers are connected to a tank of air. One leg of the manometer is open to 100kPa pressure (absolute) while the other leg is subjected to 90kPa. Find the difference in deflection between both manometers, Delta h_a - Delta h_b.

Most geologists believe that the dinosaurs became extinct 65 million years ago when a large comet or asteroid struck the earth, throwing up so much dust that the sun was blocked out for a period of many months. A.