subject
Physics, 08.01.2021 16:40 glander2

Suppose an adult blue whale is stranded on a beach. The whale, which lies parallel to the shore, is 15 m from water deep enough for it to swim away in. A
group of people line up along the side of the whale to push it back into the
ocean. If the whale's weight is 1.5x 10° N, and the force of friction that must
be overcome by the people is 0.25 times the whale's weight, how much work
must the people do on the whale in order to return it to the ocean?

ansver
Answers: 1

Another question on Physics

question
Physics, 22.06.2019 11:20
If a rock is thrown upward on the planet mars with a velocity of 12 m/s, its height (in meters) after t seconds is given by h = 12t − 1.86t2. (a) find the velocity of the rock after two seconds. m/s (b) find the velocity of the rock when t = a. 12−3.72a m/s (c) when will the rock hit the surface? (round your answer to one decimal place.) t = s (d) with what velocity will the rock hit the surface? m/s
Answers: 1
question
Physics, 22.06.2019 11:50
Question 1 (5 pts): what is the maximum distance for which you can you resolve the two individual headlights of an on-coming truck as two separate lights rather than one if the headlights are separated by 2.00 m and your eye has a diameter of 1.00 centimeter? assume a wavelength of 500 nm.
Answers: 2
question
Physics, 23.06.2019 03:10
You want to move a heavy box with mass 30.0 kg across a carpeted floor. you pull hard on one of the edges of the box at an angle 30∘ above the horizontal with a force of magnitude 240 n, causing the box to move horizontally. the force of friction between the moving box and the floor has magnitude 41.5 n . what is the box's acceleration just after it begins to move
Answers: 1
question
Physics, 23.06.2019 08:40
Question 1 of 10multiple choice: select the best answer and click "submit."what method of forecasting predicts the arrival time of a storm based on itscurrent speed and other starting variableso a. climatology methodo b. trends methodo c. analog methodod. persistence method
Answers: 2
You know the right answer?
Suppose an adult blue whale is stranded on a beach. The whale, which lies parallel to the shore, is...
Questions
question
History, 28.06.2019 00:00
question
Health, 28.06.2019 00:00
question
Mathematics, 28.06.2019 00:00