Answer:
the swing on the right is more likely to break
since the vertical component of the tension of the rope has to balance the weight. ie. the resultant tension in the rope is greater
Answer:
Explanation:
First, define the control volume for the energy balance. The most suitable control volume is that between the free surfaces of two reservoirs, the feeding reservoir, which is 115m above the turbine, and the final reservoir which is expected to be so close to the turbine because it will mean an energy waste if not.
With this control volume, write the energy balance:
(Its formulation can be studied in Cengel (Fluid mechanics, chapter five).
Consider that both surfaces are at the same pressures (atmospheric pressure is expected for both), and both fluid velocities at the surfaces are close to zero because both reservoirs are so large and there is not considerable height change in the process. Q the heat flow (there is none), and H is the mechanic energy lost, which will be neglected because we are calculating the power generation potential, it means, its better possible power generation. Then the energy balance will be:
is the height of the surface near the turbine, and 
the height of the surface of the reservoir above. So, the power is:
The sign is negative because the balance equation was formulated thinking that the energy is going out of the fluid, but it will be considered positive if we are considering the produced energy (the sign depends on what you are analyzing).
So, the power generation potential is:
Students ought to depict one of the accompanying circumstances:
(1) User gatherings are eager and need something new, not a standard answer for a run of the mill issue,
(2) The hierarchical culture bolsters joint critical thinking practices among various levels of representatives,
(3) Analysts estimate that the quantity thoughts produced through one-on-one meetings won't be as copious as the quantity thoughts conceivable from an expanded gathering exercise, or
(4) Organizational work process allows the nonattendance of key faculty amid a two-to-four-day piece of time.
C) refract
Explanation:
When light passes from air into water, the light waves will bend or they refract and the pencil will appear to be broken.
In normal space, light travels along a straight path with no alteration of the path along which it travels.
- When light crosses the boundary from a denser to a less dense medium, it is refracted.
- Refraction implies that the angle of the light is bent.
- This is because the new medium causes the light rays to slow down compared to the speed it was coming forth with.
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Answer: the force of static friction of the sleigh on the crate
Explanation:
The force that is responsible for the crates increase in speed up the hill is the force of static friction of the sleigh on the crate.
When a light horizontal push is applied and which isn't enough to move the box, the static friction force will also be directly opposite to the push.
When an individual pushes harder, the force of the friction will then be enough to create a push.
