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Problem: A hunter wishes to cross a river that is 1.9 km wide and flows with a speed of 5.0 km/h parallel to its banks. The hunter uses a small powerboat that moves at a maximum speed of 11 km/h with respect to the water.
Part A: What is the minimum time necessary for crossing?
I need help to determine the minimum time necessary for crossing.
A computer to be used in a satellite must be able to withstand accelerations of up to 27 times the acceleration due to gravity. What is the minimum amplitude of vibration that must be used in this test
The drawing shows two thermometers, A and B, whose temperatures are measured in °A and °B. The ice and boiling points of water are also indicated. Using the data in the drawing, decide the number of B degrees on the B scale that correspond to 1 °A on..
You must determine the acceleration of a rocket so that its equipment can be deisgned to survive. The rocket will have a burn time of t = 30secs, What is the maximum altitude of the rocket
A rifle with a barrel length of 59 cm fires a 8 g bullet with a horizontal speed of 350 m/s, What resistive force (assumed to be constant) does the wood exert on the bullet
Two balls of identical mass of 0.151 kg and with identical charges placed on them hang from the ceiling on identical strings of lengths 1.510 m, what is the charge on each ball
A race cars start from rest on a circular track of radius 210 meter. The car's speed increases at the constant rate of 0.590 m/s2. Determine the speed of the race car
At t = 0, a 750 g mass at rest on the end of a horizontal spring (k = 125 N/m) is struck by a hammer, which gives the mass an initial speed of 2.76 m/s. Determine the position as a function of time
when a constant force acts on an object what does the objects change in momentum depend upon? check all that apply the
Electromagnetic waves (light) can form standing waves. In a certain standing wave pattern formed by microwaves, What is the microwave frequency
A model rocket rises with constant acceleration to a height of 3.4m , at which point its speed is 28.0m/s. Find the speed of the rocket
A 7.9-N force pulls horizontally on a 1.6-kg block that slides on a smooth horizontal surface. What is the acceleration of the blocks
A loaded freight car has 5 times as much mass as an empty freight car. what will be the speed of both cars after collision
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