A open star cluster will have a(n) _____________ turn-off point than an older star cluster
Fill in the blank(s) with correct word
blue
blueish
earlier
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A crane lifts a steel submarine of density 7800 kg/m3 and mass 20,000 kg
What is the tension force that the lifting cable exerts on the submarine (a) when the submarine is submerged in water of density 1000 kg/m3, and (b) when it is entirely out of the water? A) (a) 2.0 × 105 N (b) 1.7 × 105 N B) (a) 1.7 × 105 N (b) 2.0 × 105 N C) (a) 2.6 × 103 N (b) 2.0 × 105 N D) (a) 2.0 × 105 N (b) 2.6 × 103 N
A particle (mass = 2.0 mg, charge = ?6.0 ?C) moves in the positive direction along the x axis with a velocity of 3.0 km/s. It enters a magnetic field of 
mT. What is the acceleration of the particle?
A.
m/s2B.
m/s2C.
m/s2D.
m/s2E.
m/s2Which of these graphs would be correct for the speed of a ball thrown upward? 
A. A B. B C. C D. D
The wavelength of a certain laser is where Express this wavelength in nanometers
A) 3.5 × 102 nm B) 3.5 × 103 nm C) 3.5 × 101 nm D) 3.5 × 104 nm