What are the first three steps of scientific inquiry

Why might you want to use a single fixed pulley? A) to reduce the weight of lifted objects B) to raise or lower heavy objects C) to raise or lower lightweight objects D) to reduce the force needed to raise objects

A partially evacuated vertical cylindrical container is covered by a circular lid that makes an airtight seal. The pressure in the room is 1.01 x 105 Pa and the pressure inside the container is 0.41 x 105 Pa.

What increases as the temperature of a solid object rises

Which of the following takes place in the combustion chamber of a gas turbine engine? A. A glow plug is used to add enough heat to the chamber for combustion to occur. B. Gaseous combustion products are cooled to a desired temperature. C.

A runner completes a 10 km run in about 45 minutes. What was the runner's speed in km/h?

Mass affects/does not affect the conservation of energy?

if 20N of unbalanced force is applied to an object and it accelerates 4m/s/s, then what was the mass of the object?

When a star is moving away from us, the observed frequencies of light are lower than the actual frequencies. this illustration of the doppler effect is called?

A pressure difference of 6.00 x 104 Pa is required to maintain a volume flow rate of 0.400 m3 / s for a viscous fluid flowing through a section of cylindrical pipe that has a radius 0.330 m.

The moon's gravity is one-sixth that of the earth. What is the period of a 0.25m long pendulum on the moon?