Answer:
Explanation:
66.2mi/h to m/s
×
×
×
- mi will go with mi
- h with h
- min with min
- m/s is left
= 29.58772222
Pls make sure of the way of solving to be sure...
Answer:
4750000 J
Explanation:
Kinetic Energy= 1/2* mass* velocity²
1/2*950*100²=4750000
Explanation:
First we need to find the acceleration due to gravity on the planet. The wrench took 0.809 s to fall from a height of 4.50 m so we can use the equation
Solving for g, we get
Recall that the acceleration due to gravity on a planet's surface can be written as
We can express the mass of the planet 
in terms of its density 
as follows:
The expression for g then becomes
Solving for 
we get
![\:\:\:\:\:\:\:= \left[\dfrac{3(13.8\:\text{m/s}^2)}{4\pi (6.674×10^{-11}\:\text{Nm}^2\text{/kg}^2)(5500\:\text{kg/m}^3)}\right]](https://tex.z-dn.net/?f=%5C%3A%5C%3A%5C%3A%5C%3A%5C%3A%5C%3A%5C%3A%3D%20%5Cleft%5B%5Cdfrac%7B3%2813.8%5C%3A%5Ctext%7Bm%2Fs%7D%5E2%29%7D%7B4%5Cpi%20%286.674%C3%9710%5E%7B-11%7D%5C%3A%5Ctext%7BNm%7D%5E2%5Ctext%7B%2Fkg%7D%5E2%29%285500%5C%3A%5Ctext%7Bkg%2Fm%7D%5E3%29%7D%5Cright%5D)
<span>The amplitude because that controls the height of the wave. Correct answer: Amplitude.</span>
Answer:
a ) 3 v
b ) 400 mA
Explanation:
In case of transformer there is relation between no of turns in primary and secondary coils and voltage input and output as follows
V₁ / V₂ = n₁ / n₂
Where V₁ and V₂ are input and output voltage and n₁ and n₂ are no of turns of primary and secondary coils.
Here V₁ = 1.5 v , V₂ = ? , n₁ = 10 , n₂ = 20
Put the values in the equation above
1.5 / V₂ = 10 / 20
V₂ = 3 v.
Similarly formula for current is as follows
I₁ / I₂ = n₂ / n₁
Whereas I₁ and I₂ are current in primary and secondary coil
Put the values in the equation above
I₁ / 200 mA = 20 / 10
I₁ = 400 mA.
