Physics, 06.07.2019 18:00 kevinsosdik
Aboat is travelling down stream in a river at 20 m/s south. a passenger on the boat walks toward the back of the boat at 10 m/s north. relative to the ground, at what velocity is the passenger moving? a) 10 m/s north b) 10 m/s south c) 30 m/s north d) 30 m/s south
Answers: 1
Physics, 22.06.2019 09:00
An open cart is moving along a straight frictionless horizontal track. when rain starts falling vertically into the cart, what happens to the speed of the cart?
Answers: 3
Physics, 22.06.2019 09:00
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? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final
Answers: 1
Physics, 22.06.2019 14:10
The number of passengers who arrive at the platform of a subway station for the 10 am train is a random variable with a mean of 120 and a variance of 16. find the lower bound of the probability that there will be between 100 and 140 passengers (round off to second decimal place).
Answers: 3
Aboat is travelling down stream in a river at 20 m/s south. a passenger on the boat walks toward the...
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