2. A sound wave in a steel rail has a frequency of 620 Hz and a wavelength of 10.5 m. What
is...
Physics, 10.02.2020 08:05 xXCoryxKenshinXx
2. A sound wave in a steel rail has a frequency of 620 Hz and a wavelength of 10.5 m. What
is the speed of sound in steel?
Answers: 2
Physics, 22.06.2019 09:30
The graph represents the distance a car travels over time while on the highway. which statement about the car's trip is accurate? a) the car does not move over time. b) the car travels at a constant velocity. c) the car's velocity increases constantly over time. d) the car's velocity decreases constantly over time.
Answers: 1
Physics, 23.06.2019 04:50
Which is not true of alpha radiation? o a. it increases the number of protons. o b. it has a positive charge. o c. it causes transmutation. o d. it is heaviest of the three types
Answers: 1
Physics, 23.06.2019 11:00
Me ! since green bounces off red, this must be collision a.elastic b.explosion c.inelastic
Answers: 1
Physics, 23.06.2019 15:30
The following statements are about the electroscope. select all that are true. if an electroscope were given a positive charge beforehand, the leaves would move closer together if a positively charged object were brought near. when a properly prepared electroscope is used to determine the type of charge on an object, the total charge on the electroscope changes when the charged object is brought near (but not touching) the electroscope. depending on how the electroscope is prepared beforehand, the leaves can either move together or move apart when negative charge is brought near. an electroscope must first be given a known type of charge before it can be used to identify the types of charges on objects brought near it. when properly prepared, the leaves on an electroscope will always move further apart when negative charge is brought near. the leaves of an electroscope will move apart if it is given either a positive or a negative charge.
Answers: 2
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