What layer of the atmosphere is made mostly of hydrogen and helium?

The coordinates of a bird flying in the xy-plane are given by x (t) = αt and y (t) = 3.0m-β t2, where α=2.4 m/s and β=1.2 m / s2. a) Let the direction be the angle, that the vector makes with the + x-axis measured counterclockwise.

Which of the following measurements changes based on the strength of gravity? A. Mass B. Size C. Length D. Weight

A 30-g car rolls from a hill 12 cm high and is traveling at 154 cm/s as it travels along a 275 cm horizontal track. What is the momentum of the car?

Which is an advantage of using space observatories for space exploration?

A metal sphere with radius 1.00 cm is supported on an insulating stand at the center of a hollow, metal, spherical shell with radius rb = 9.40 cm. Charge + q is put on the inner sphere and charge - q on the outer spherical shell.

Identify the possible source of earth's magnetic field

A nurse applies a horizontal force of 147 N on a bed that has a mass of 152 kg, The magnitude of the normal force acting on the bed is .967 N 5.00 N 1440 N 1490 N

What do scientists use to look at cells, tissues, and small organisms to see how their biological processes differ in space? vibration flybys airlock microgravity

Which of the following is a product of respiration resulting from the breaking of carbon-carbon bonds

A wagon is accelerating down a hill. which statement is true?