Answer:
Explanation:
The two examples of contact forces are frictional force and applied force. The two examples of noncontact forces are gravitational force and magnetic force.
Answer:
Frequency of a sound wave remains independent of the medium through which it travels. Wavelength, velocity and phase change with the change in media.
Explanation:
Work Done = force • distance
Work Done = 5m • 50N
Work Done = 250J
Answer: 250 Joules
Answer:
a) 10 dB, b) 20dB, c) 10², 10⁴, 10⁸
Explanation:
The logarithmic scale has a great advantage when measuring magnitudes of a large number of scales, since it converts these values to linear, allowing easier viewing.
Part A
Let's look for decibels for an intensity I = 10 Io
We calculate
β = 10 log (10Io / Io)
β = 10 dB
Part b
Let's find the intensity for I = 100 Io
We calculate
β = 10 log (100Io / Io)
β = 10 log 100
β = 10 2
β = 20 db
Part c
Δβ2 corresponds to an intensity change of 10² Io, therefore it corresponds to an intensity increase of 10²
Δβ4 corresponds to a change in intensity of 10⁴Io
Δβ8 is an intensity change of 10⁸ Io
Answer:
Attention all people! There is a girl trying to get people to press this link and she tries to control your computer and steal your information that is on the computer! SHE WILL CAUSE A VIRUS!!!!! DO NOT PRESS ANY LINKS!!!!!!!!!
Explanation: