Question

3. An_______magnet only
is a strong magnet that acts like a magnet only when an electric current passes through it.
4._______is created by the upward push or
upthrust of
are three-dimensional photographic images made vi
water
5.
laser lights.
6. The loudness of sound is usually measured in
station is a place that converts the energy of
me
7. A
water into electric energy.
8. Energy is measured in
9.
was the first person to discover that air is essentially
mixture of two gases.
10.
is the black soot left behind when candles and other
objects burn.
11.
is a radiation whose wavelengths are shorter than vist
light.
12.
are artificial satellites that create a communication
13.
channel between a source transmitter and receiver at different places on earth.
uses X-rays to study the structure of atoms in a crysta
are used to convert pictures, texts and other materials
into digital images for computers to comprehend.
14. ________ are used to convert picture ,text and other materials into digital omages for computers to comprehend.

please guys answer fast
pleaseeeeeee​

Answer 1

Answer:

3. Electromagnet

4. buoyant force

5. -----(not clear question)

6.