Classify the reaction that occurred between the iron and oxygen. The reactions that are possible are synthesis, decomposition, single replacement, double replacement, combustion, oxidation, or reduction

What is the speed of light in a vacuum

A jeweler is determining the optical properties of an unknown blue gemstone. She uses an angle of incidence of 62°, and measures an angle of refraction of 30°. Assuming the index of refraction of air is 1.

The lava lamp has a light bulb as a heat source at its base. The lamp contains a colored, waxy fluid that can be observed moving in clumps through a clear liquid.

Which type of seismic wave produces the most severe ground movements?

5. Which is not true about a wave in the open ocean? D A Water particles move in a circular path. B As the wave travels, water particles pass the energy along by moving in a circle. O C Water particles travel with the wave.

When lava cools, what type of Rock forms?

A uniformly charged conducting sphere of 1.1 m diameter has a surface charge density of 6.2 µC/m2. (a) Find the net charge on the sphere. (b) What is the total electric flux leaving the surface of the sphere?

A blow-dryer and a vacuum cleaner each operate with a voltage of 120 V. The current rating of the blow-dryer is 12 A, while that of the vacuum cleaner is 5.7 A. Determine the power consumed by (a) the blow-dryer and (b) the vacuum cleaner.

4. A 40 kg child and a 30 kg child want to balance themselves on a 4 meter, 50 kilogramn see-saw. Where should the fulcrum be placed?

A 2-kg object is dropped from a height of 1000 m. What is the force of air resistance on the object when it reaches terminal velocity