Explanation:
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Suppose you are designing an amplifier and loudspeaker system to use at a rock concert. You want to make it as loud as possible.
1 answer:
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Complete Question
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Answer:
The temperature change is
Explanation:
From the question we are told that
The velocity field with which the bird is flying is
The temperature of the room is
The time considered is t = 10 \ seconds
The distance that the bird flew is x = 1 m
Given that the bird is inside the room then the temperature of the room is equal to the temperature of the bird
Generally the change in the bird temperature with time is mathematically represented as
Here the negative sign in is because of the negative sign that is attached to x in the equation
So
From the given equation of velocity field
So
substituting the given values of x and t
Answer:
The net force = 0
Explanation:
The given information includes;
The mass of the crate = 250 kg
The way the helicopter lifts the crate = Uniformly (constant rate (speed), no acceleration)
In order to pull the crate upwards, the helicopter has to provide a force equivalent to the weight of the crate keeping the helicopter on the ground.
The weight of the crate = The mass of the crate × The acceleration due gravity acting on the crate
The weight of the crate, ↓ = 250 kg × 9.81 m/s² = 2,452.5 N
The force the helicopter should provide to just lift the crate, ↑ = The weight of the crate = 2,452.5 N
The net force, =
↑ -
↓ = 2,452.5 N - 2,452.5 N = 0
The net force = 0.