Physics, 18.01.2021 17:00 Hunter1471
1. Lightning is seen 3 seconds before a thunder. How far away has the thunder
taken place? Take velocity of the sound = 340 m/s.
2. Ultrasonic waves are used to locate a sunken ship under the sea. If the reflected wave is received by the receiver after 12 seconds, how far is the ship
under water? Take the velocity of sound in water as 1450 m/s.
3. How is SONAR method different from RADAR method?
4. State three uses of ultrasound.
5.Exlain the following:
(a) Sounds are heard clear at night.
(b) Nocturnal animals can find their prey in darkness.
Answers: 3
Physics, 22.06.2019 08:00, cxttiemsp021
Choose each of the settings that follow and list them below do it ill mark brainliest first object= position= speed= acceleration= second object= position= speed= acceleration=
Answers: 2
Physics, 22.06.2019 21:10, bensleytristap93y8q
A10-kg isto a of 10 m at aa0.9 kg/m.30 kg of ,at aas10-m .. ( 9.8 m/s2 g.)
Answers: 3
1. Lightning is seen 3 seconds before a thunder. How far away has the thunder
taken place? Take...
taken place? Take...
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