A uniform crate with a massof 30 kg must be moved up along the 15° incline without tipping. Knowing that force P is horizontal,
1 answer:
You might be interested in
Answer:
600 Ω
Explanation:
when there is no load attached to the generator the circuit is open and zero current flows through the circuit, hence voltage drop across the internal resister is zero.
when 600Ω load is connected current starts flowing through the circuit and some voltage will drop across the internal resister.
voltage across the load resister is 1 V, so the current through it will be:
I=V/R
I=1/600 A= 1.67mA
voltage drop in the internal resister is:
V= input voltage - output voltage
V=2 V-1 V
⇒V=1 V
Now by using ohm's law
R=V/ I
R= (I= 1.67mA, as the resistors are connected in series)
⇒R=600 Ω
Hence Thevinin resistance of the generator is 600Ω.
Complete Question
The complete question is shown on the first uploaded image
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
