Answer:
θ = 61.3°
She must swim at an angle of 61.3°
Explanation:
Given;
Width of river = 100 m
Alicia speed in still water = 2.5m/s
Current of river = 1.2m/s
The angle for her to achieve her goal can be derived by the summation of velocity in the direction of the current.
Her speed in the opposite direction of the current must be able to neutralise the speed of the current;
2.5cosθ - 1.2 = 0
2.5cosθ = 1.2
cosθ = 1.2/2.5
θ = cosinverse(1.2/2.5)
θ = 61.3°
Answer:
Explanation:
This is due to an increase in hydrostatic pressure, the force per unit area exerted by a liquid on an object. The deeper you go under the sea, the greater the pressure of the water pushing down on you. For every 33 feet (10.06 meters) you go down, the pressure increases by one atmosphere .
Thermal energy is not in the process of being transferred it is not in transit but remains as part of the internal energy of the system heat on the other hand is energy in transit energy is the process of being transferred from a hotter system towards another colder system
Answer:
294.4 N
Explanation:
Since the hose obeys Hooke's law, the force it exerts on the balloon in the pouch is given by:
![F=kx](https://tex.z-dn.net/?f=F%3Dkx)
where
k is the spring constant
x is the stretching
In this problem,
k = 92.0 N/m
x = 3.20 m
Therefore, the force exerted is
![F=(92.0 N/m)(3.20 m)=294.4 N](https://tex.z-dn.net/?f=F%3D%2892.0%20N%2Fm%29%283.20%20m%29%3D294.4%20N)
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