Does every scientific method begin with an observation? explajn.

The total atmospheric pressure on mars is about 150 times less than that of earth. the total air pressure of mars' atmosphere is 0.675 kpa. determine the partial pressure of argon on mars if the rest is composed of 0.013 kpa n2, 0.009 kpa o2, 0.

Waves that make up the visible part of the electromagnetic spectrum have lower energy than X-rays. lower energy than microwaves. higher energy than gamma rays. higher energy than ultraviolet light.

An accelerometer-a device to measure acceleration-can be as simple as a small pendulum. Suppose you are flying a small plane in a straight horizontal line and your accelerometer hangs 14.00° behind the vertical, opposite the direction of motion.

Howard is flying a kite and wants to find its angle of elevation. The string on the kite is 32 meters long and the kite is level with the top of a building that he knows is 28 meters high.

What is the meaningful of physics

The siren of a fire engine that is driving northward at 30.0 m/s emits a sound of frequency 2000 Hz. A truck in front of this fire engine is moving northward at 20.0 m/s.

If an atom has 34 protons and 40 neutrons, what is the mass number?

The atomic mass of an atom (in amu) is equal to Question 11 options: A. the total number of its protons, neutrons, and electrons B. the total number of electrons C. the total number of protons D. the total number of its protons and neutrons E.

12. Which of these describes the gravitational force from a planet?" O large and pulls objects toward itself small and pulls objects toward itself O small and pushes objects away from itself O large and pushes objects away from itself

In a laundromat, during the spin-dry cycle of a washer, the rotating tub goes from rest to its maximum angular speed of 4.7 rev/s in 8.3 s. You lift the lid of the washer and notice that the tub decelerates and comes to a stop in 17.5 s.