Physics, 04.04.2021 19:00 neparidzetazo
A 0.75 kg fish looking to strike at its prey accelerates from rest to 2 m/s in 0.25 second. If the average drag force from the water is 1.50 N, what is the forward force on the fish (that is the thrust that the tail fin makes when it pushes on the water)?
Answers: 2
Physics, 21.06.2019 17:30
In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j ?
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Samir watches a 100-minute movie on his spaceship. maria's spaceshipe flies in the same direction as samir's spaceship but she observes his move to last 125 minutes and his spaceship to be 40 m long. how long does samir observe his own spaceship to be? according to an observer on earth, planet x is stationary. maria and samir depart earth on their spaceships at the same time, each flying at 0.5c. maria flies toward planet x and samir flies in the opposite direction. according to maria, her voyage to planet x takes 9 years. how many years does marias voyage take according to samir?
Answers: 3
A 0.75 kg fish looking to strike at its prey accelerates from rest to 2 m/s in 0.25 second. If the a...
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