Physics, 22.04.2021 22:50 emilylittle2442
3. Commercial trucks cause about 18 000 lane-change and merging accidents per year in the
United States. To prevent many of them, a warning system covering blind spots is being
developed. The system uses electromagnetic waves of frequency 2.40 * 100 Hz. What is the
wavelength of these waves?
Answers: 2
Physics, 22.06.2019 03:00
An electric current is flowing through the cord below.what will happen to this current if a magnet is brought near the cord? a. the electric current will stop flowing. b. it will exert a force on the voltage. c. the resistance of the wire will decrease. d. it will exert a force on the electric current.
Answers: 2
Physics, 22.06.2019 03:40
Science and technology are interdependent. advances in one lead to advances in the other. give an example of this phenomenon.
Answers: 1
Physics, 22.06.2019 09:00
Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? question 2 options: the balloons rise at the same rate. both balloons are the same size. the ballons both rise. the cold ballon is larger than the warm balloon. the cold balloon expands and rises. the warm balloon shrinks and sinks. the warm balloon expands and rises. the cold balloon shrinks and sinks.
Answers: 3
3. Commercial trucks cause about 18 000 lane-change and merging accidents per year in the
United S...
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