This is a free-fall problem. This can be answered using one of the free-fall equations:
<span>V^2 = 2gh or V = √(2gh)
</span>
Where V = velocity ; h = total height (given as 318m) ; g = acceleration due to gravity (as this is on Earth, let us use 9.8 m/s^2)
With the given values, we can substitute it into the equation directly like so:
<span>V = √(2gh)
</span>V = <span>√(2 x 9.8 x 318)
</span><span>V = √(6232.8)
</span>V = 78.94808 or approximately 78.95 m/s
Therefore the stone's velocity just before hitting the ground is <span>78.95 m/s.</span>
Idk I usually use google. I'm just replying to you so my account will be finished setting up. Sorry
Explanation:
Given that,
Let ABC is a triangle such that AB is perpendicular distance, BC is base and AC is the hypotenuse of triangle.
Let AB = 210 ft
AC = 90 + x
BC = x
To find :
The dimensions of the cornfield.
Solution :
Pythagoras theorem is used to find the value of x. It is given by :
On solving the above equation we find the value of x, x = 200 ft
So, BC = 200 ft
AC = 90 + 200 = 290 ft
So, the length, base and the hypotenuse of the triangle is 210 ft, 200 ft and 290 ft respectively.
Answer: option b, the distance the spring stretches.
Hook's law is: F = - K Δx
Where:
F stands for the force that the spring exerts
K is stands for the constant of the spring
Δx stands for the distance the spring is displaced from the equilibrium point.
And the negative sign is due to F is opposite to the direction in which the spring is away from the equilibrium point.
Answer:
Wavelength of light is 750 nm.
Explanation:
It is given that,
Frequency of light, 
The relationship between the wavelength and the frequency of light is given by :
Where
c = speed of light
= frequency of light
= wavelength of light
Hence, the correct option is (d) "750 nm".
