The correct choice is
D. 22 Hz and 42 Hz.
In fact, the beat frequency is given by the difference between the frequencies of the two waves:
In this problem, the beat frequency is , therefore the only pair of frequencies that gives a difference equal to 20 Hz is
D. 22 Hz and 42 Hz.
Answer:
Explanation:
Initial speed of a cat, u = 2m/s
It takes the cat 3 s to reach a top speed of 20 m/s.
We need to find the cat's rate of acceleration during this time. Acceleration is equal to the rate of change of velocity. So,
So, the acceleration of the cat is .
If i'm not mistaken it should be the seminal vesicles,the prostate gland , and the bulbourethral glands. i hope i helped :) sorry if they are not correct <span />
Answer:
The smallest radius will be four (4) times the initial radius
Explanation:
The car maintains a constant angular speed. According to Newton's Second Law F = m a
1.
2.
Replacing 2 in 1
3.
Where:
Fr= Frictional force
Rp= Initial Radius
An= Centripetal Acceleration
M= Mass
V= Velocity
Also we have that:
4.
μ= Coefficient of friction between the car and the surface
M= Mass
W= Weight
G= Gravity
r is cleared from equation 3
5.
Replacing 4 in 5
6.
Simplifying
7.
Now we have a new velocity equal to twice the initial velocity, We replace it by 2v in equation 7
8.
Computing
9.
Replacing 5 in 9
Incorrect didn't flow away from pole cause warmer climate I know cause I tried.
Im'ma guess cause didn't correct the answer but says Flowing away from pole was wrong though.
My guess is crashing with warm water. Might be wrong too though...