Hello there
the answer is hot pot
btw whats the point of haveing a black profile pic if someone else has it -_-
well hope this halps have a great day :p
Answer:
v ’= 21.44 m / s
Explanation:
This is a doppler effect exercise that changes the frequency of the sound due to the relative movement of the source and the observer, the expression that describes the phenomenon for body approaching s
f ’= f (v + v₀) / (v-)
where it goes is the speed of sound 343 m / s, v_{s} the speed of the source v or the speed of the observer
in this exercise both the source and the observer are moving, we will assume that both have the same speed,
v₀ = v_{s} = v ’
we substitute
f ’= f (v + v’) / (v - v ’)
f ’/ f (v-v’) = v + v ’
v (f ’/ f -1) = v’ (1 + f ’/ f)
v ’= (f’ / f-1) / (1 + f ’/ f) v
v ’= (f’-f) / (f + f’) v
let's calculate
v ’= (3400 -3000) / (3000 +3400) 343
v ’= 400/6400 343
v ’= 21.44 m / s
The equation that relates the conductance G with the conductivity
is given by
where A is the cross-sectional area while L is the length of the conduit.
In our problem, the area is
and the length is
, while the conductance G is
, therefore re-arranging the equation we can find the conductivity:
Answer:
10⁶ or 1000000
Explanation:
<h2>formula: frequency = velocity/wavelength =
</h2><h2 /><h3>i'm not sure because the teacher probably wrote the question wrong.</h3>
Answer:
The mass of the bird is 1 [kg]
Explanation:
The kinetic energy is defined by the following equation:
where:
m= mass of the bird [kg]
v = velocity of the bird [m/s]
Ek = kinetic energy [J]
We need to clear the mass from the equation given.