For a simple harmonic oscillator, which of the following pairs of vector quantities can't both point in the same direction? (The position vector is the displacement from equilibrium.)
1.position and velocity
2.velocity and acceleration
3.position and acceleration
3
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At the upper right of the Hertzprung—Russell diagram we find
A) red giant stars B) supergiant stars C) white dwarfs D) main sequence stars
A 2.0-kg block slides down a fixed, rough curved track. The block has a speed of 5.0 m/s after its height above a horizontal surface has decreased by 1.8 m. Assume the block starts from rest. What is the change in mechanical energy of the block caused by the force of friction during this descent?
a. ?14 J b. ?12 J c. ?10 J d. ?16 J e. ?25 J
The hydrogen in our solar system was created from subatomic particles in ______
a. the Earth b. our sun c. Jupiter d. the Big Bang e. supernovas
Gas, lava, and ______________ are the three general products emitted during a volcanic eruption
Fill in the blank(s) with correct word