Spiral arms help in star formation
Indicate whether the statement is true or false
True
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What determines the "pitch" of a musical note?
A) amplitude B) wavelength C) frequency D) phase E) intensity
The electric field between two charged plates is 7.2 kN/C. If the plates are separated by 3.0 mm, what is the potential difference between them?
A. Need more information B. 240 kV C. 220 V D. 22 V
How does sedimentary rock form?
What will be an ideal response?
Two crates of mass 65 kg and 125 kg are in contact and at rest on a horizontal surface (figure below). A force of 650 N is exerted on the 65 kg crate. If the coefficient of kinetic friction is 0.18, calculate:
a) the acceleration of the system and
b) the force that each crate exerts on the other. Draw a FBD (full body diagram). Show all work.
