In the proton-proton cycle, .007 of the mass ends up as energy, not helium

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TRUE

Physics & Space Science

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An object starts from rest and moves with an acceleration of 2.0 for 3.0 seconds. It then reduces its acceleration to 1.0for 5.0 additional seconds. The velocity 8 seconds from the start of the motion is

A. 51 m/s. B. 38 m/s. C. 11 m/s. D. 9.0 m/s. E. 7.6 m/s.

Physics & Space Science

Which measurement is equal to a million pixels?

A. megapixel B. millipixel C. minipixel D. magmapixel

Physics & Space Science

A 900-kg car traveling east at 15.0 m/s collides with a 750-kg car traveling north at 20.0 m/s. The cars stick together. What is the speed of the wreckage just after the collision?

A) 6.10 m/s B) 12.2 m/s C) 25.0 m/s D) 35.0 m/s E) 17.3 m/s

Physics & Space Science

The rotation curve for our Galaxy shows stars beyond the Sun moving more slowly than expected

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Physics & Space Science