Physics, 29.09.2020 07:01 majorsam82
Which statement describes the wave interactions in sound navigation and ranging (SONAR)?
Sound is transmitted through the water and diffracted by hard surfaces
Sound is transmitted through the water and reflected by hard surfaces
Sound is diffracted through the water and transmitted by hard surfaces
Sound is diffracted through the water and reflected by hard surfaces
Answers: 3
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Abaseball is thrown a distance of 20 meters. what is its speed if it takes 0.5 seconds to cover the distance
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During which interval are the persons represented by the graph not moving? a) 0 to 0.5 hrs b) 1.5 to 2 hrs c) 2 to 2.5 hrs d) 4.5 to 5 hrs
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Physics, 22.06.2019 18:30
Ablock of mass m slides on a horizontal frictionless table with an initial speed v0 . it then compresses a spring of force constant k and is brought to rest. the acceleration of gravity is 9.8 m/s2. how much is the spring compressed x from its natural length? 1) x = v0*sqrt(k/(mg)) 2) x=v0*sqrt(m/k) 3) x=v0*((mk)/g) 4) x=v0*sqrt(k/m) 5) x=v0*(m/kg) 6) x=v0*sqrt((mg)/k) 7) x=(v0)^2/(2g) 8) x=v0*(k/(mg)) 9) x=(v0)^2/(2m) 10) x=v0*((mg)/k)
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Physics, 23.06.2019 03:00
The stopwatch used by a student to measure velocity of a pulse in a slinky was of least count 0.1 second. he stops the stopwatch when a pulse has made 3 journeys from one end to the other of the slinky. he finds the seconds hand to be at 52nd division. calculate the correct time noted by him.
Answers: 3
Which statement describes the wave interactions in sound navigation and ranging (SONAR)?
Sound is t...
Computers and Technology, 18.12.2019 03:31
Computers and Technology, 18.12.2019 03:31