To break this problem down, let's start with what we know. The equation given finds one component of the velocity and multiplies it by the change in time. This will not find the acceleration that the first two answers say it will, meaning that the answer isn't A or B.
That leaves us with the final two answers, C and D. If the projectile was launched horizontally and we were trying to find the horizontal displacement, we wouldn't need to use cosθ to find the horizontal velocity, meaning that our answer is most likely C) <span>the horizontal displacement of a projectile launched at an angle!</span><span />
The answer in (B)214.4J
I hope this helped have a nice day!
The formula for gravitational potential energy is ...
Grav PE = (mass) · (gravity) · (height)
We can see from this simple formula that mass and height have <em>EQUAL </em>influence on the Gravitational PE. If EITHER of them is multiplied by some factor, the Gravitational PE gets multiplied by the same factor.
So the answer to the question is: <em> No </em>.
Answer: It is selling like crazy! When the Food and Drug Administration asked for scientific proof that the water actually does what it claims to do,
Explanation:
Answer:
527Hz
Explanation:
The beat frequency of any two waves is:
Fbeat =|f1 – f2|
i.e
for frequency tied to length increase (wavelength increases as length increases, therefore frequency decrease:: Fbeat = f1+f2
for frequency tied to length decrease wavelength increases as length increases, therefore frequency also increases : Fbeat = f1-f2
Note that a wavelength increase means a decrease of frequency because v = fλ
Therefore from the question:
Fbeat =4 beats/s
F2 -523Hz
Fbeat = f1-f2
F1=Fbeat+F2
=523+4
=527Hz
