Answer:
9 - 10N to the left
10 - There is no change on the object
Explanation:
Can I have brainliest answer pls?
If an object changes the speed of <u>direction</u>, its velocity also changes. Any change in <u>velocity</u> results in acceleration.
Hope that helps!
Answer A) the watermelon has more inertia so it takes more force to move it.
A. 409 Hz
The fundamental frequency of a string is given by:

where
L is the length of the wire
T is the tension in the wire
m is the mass of the wire
For the piano wire in this problem,
L = 0.400 m
T = 1070 N
m = 4.00 g = 0.004 kg
So the fundamental frequency is

B. 24
For this part, we need to analyze the different harmonics of the piano wire. The nth-harmonic of a string is given by

where
is the fundamental frequency.
Here in this case

A person is capable to hear frequencies up to

So the highest harmonics that can be heard by a human can be found as follows:

PV=nRT
(720/760)(0.200)=(0.800/x)(0.08206)(323.15)
(0.1894736842)=(0.800/x)(0.08206)(323.15)
.0071451809=(0.800/x)
x=MM=111.9635758 g/mol