Physics, 18.05.2021 21:00 lberries08
A projectile starts from rest and accelerates at
125m/s2 to a velocity of 300 m/s. How long
did the projectile accelerate for?
a. 0.42 seconds
b. 2.4 seconds
0.24 seconds
d. 4.2 seconds
Answers: 1
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What would the difference of spectral lines emitted by hydrogen gas in distant galaxies which is normally found at a wavelength of 21 cm on earth, be observed at 21.1 centimeters?
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The position of a dragonfly that is flying parallel to the ground is given as a function of time by r⃗ =[2.90m+(0.0900m/s2)t2]i^− (0.0150m/s3)t3j^. a: at what value of t does the velocity vector of the insect make an angle of 34.0 degree clockwise from the x-axis? b: at the time calculated in part (a), what is the magnitude of the acceleration vector of the insect? c : at the time calculated in part (a), what is the direction of the acceleration vector of the insect?
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A projectile starts from rest and accelerates at
125m/s2 to a velocity of 300 m/s. How long
d...
d...
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