A massive star can fuse only up to the element silicon in its core
Indicate whether the statement is true or false
FALSE
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Simple Harmonic Motion: A sewing machine needle moves up and down in simple harmonic motion with an amplitude of 1.27 cm and a frequency of 2.55 Hz. What are the (a) maximum speed and (b) maximum acceleration of the tip of the needle?
What will be an ideal response?
Compared to life today the rate of diversification in early organism was probably
A) exactly the same as it is today B) much slower than it is today C) much faster than it is today D) just slightly slower than it is today
The capacitance of a parallel plate capacitor is directly proportional to its plate separation
Indicate whether the statement is true or false
Electrical and gravitational forces follow similar equations with one main difference:
A) Electrical forces obey the inverse square law and gravitational forces do not. B) Gravitational forces obey the inverse square law and electrical forces do not. C) Electrical forces attract and gravitational forces repel. D) Electrical forces repel and gravitational forces attract. E) Gravitational forces are always attractive but electrical forces can be attractive or repulsive.