Which instrument is not used to measure air pressure

a. aneroid barometer

b. anemometer

c. mercury barometer

How to find the number of field lines passing through

Which is an example of projectile motion? a person throwing a rock a child swinging on a swing set an athlete running on a track a teacher picking up a pencil

How was helium first discovered? mining of the radioactive element uranium using spectral analysis of the Suns' emission spectra o hubble obtaining samples from explosions off the surface of the sun deep sea mining off the coast of Texas

A piece of cobalt has a mass of 41 g and is initially electrically neutral. It is then charged with q = + 0.6 µC.

How many neutrons are in calcium

What is the frequency of 20 mm microwaves? A) 100 MHz B) 400 MHz C) 15 GHz D) 73 GHz E) 98 GHz

A measure of how much pulling, or tension, a material can withstand before breaking is - A. hardness. B. brittleness. C. tensile strength. D. malleability.

How work done against gravity can be expressed?

An electron is acted on by two electric forces, one of 2.7*10-14 N acting upward and a second of 5.8*10-14 N acting to the right. What is the magnitude of the electric field at the electron's location?

A satellite on a Low Earth Orbit is flying with a speed of 7.65 km/s. The vertical component of the Earth's magnetic field is 35.3 μT at the current location of the satellite.