Why is it that the incident angle isn't exactly the same as the reflection angle?

And example of electrical force that accurs in atom

A heat engine receives heat from a source at 1100 K at a rate of 400 kJ/s, and it rejects the waste heat to a medium at 320 K. The measured power output of the heat engine is 120 kW, and the environment temperature is 25∘C.

Where are you likely to find a cooling plant located in the ductwork? A. A medium-sized office B. A large factory C. A single family home D. A large apartment building

Which environmental hazard is directly related to nuclear power production? land stripping global warming radiation leakage soil erosion

True or False?! As we go farther from the Earth the atmosphere gets thinner, but, there is a measurable amount of air even at an altitude of 1000 meters.

A tuba creates a 4th harmonic of frequency 116.5 Hz. When the first valve is pushed, it opens an extra bit of tubing 0.721 m long. What is the new frequency of the 4th harmonic? (Hint : Find the original length.)

In the early 19th century Christian Doppler, an Austrian physicist, proposed a theory regarding the properties of a moving source of sound. This is now known as Doppler's law or the Doppler effect. What does this law state?

Legend says that archimedes, in determining whether or not the king's crown was made of pure gold, measured its volume by the water displacement method.

Resonance always causes the object resonating to fall apart or be destroyed. true or false

An insoluble solid material that is produced in double replacement reactions is called