Why are multiple trials important when carrying out an experiment?

A 2200 kilogram car is accelerating at 3.4 m/s/s. what is the NET force?

You have a cylindrical balloonship with the mass of 25 000kg, how should I calculate the airfriction on it's speed?

All of the listed human actions affect the nitrogen cycle with the exception of the A) use of agricultural fertilizers. B) runoff of pesticides into streams and lakes. C) production of sewage and animal wastes from farms.

Roberta is going over the form with a patient; the form includes such information as the name of the patient, the visit, numeric codes corresponding to the patient's diagnoses and procedures performed that day. This form is

A student walks 5.00 m at an angle of 53.0° then walks another 8.00 m at angle of 130°. what is the magnitude of the student's final displacement?

A plane is flying east at 135 m/s. The wind accelerates it at 2.18 m/s^2 directly northeast. After 18.0s, what is the magnitude of the displacement of the plane?

The same constant force, F, is applied to two blocks. The first block has a mass of M and the second block has a mass of 2M. Both blocks are initially at rest and the force acts on each of them for the same period of time, t.

Which of the following is an example of the strong nuclear force acting in an atom? A. A proton repelling a proton B. A neutron attracting a neutron C. A neutron repelling an electron D. An electron attracting a proton

Does the air in our atmosphere have mass?

Your instructor hands you a closed flask partly filled with room-temperature water. When you hold it, the heat transfer between your bare hands and the flask causes the water to boil. Quite impressive! How is this accomplished?