Pensacola, Florida lies at a latitude of 30 degrees north. Where is Polaris in its sky?
What will be an ideal response?
30 degrees high in the north
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The weight of spaceman Speff at the surface of planet X, solely due to its gravitational pull, is 389 N. If he moves to a distance of 1.86 × 104 km above the planet's surface, his weight changes to 24.31 N
What is the mass of planet X, if Speff's mass is 75.0 kg? (G = 6.67 × 10-11 N • m2/kg2) A) 2.99 × 1024 kg B) 2.99 × 1018 kg C) 2.99 × 1017 kg D) 1.59 × 1018 kg
An object will ______________ in a fluid if its average density is ______________ the density of the fluid
a. float; greater than b. float; less than c. sink; less than d. sink; equal to
A vessel containing 5.0 kg of water at 10°C is put into a refrigerator. The 1/7 HP motor (1 HP = 746 W) runs for 5.0 minutes to cool the liquid to the refrigerator's low temperature, 0°C. What is the ? of the refrigerator?
a. 5.7 b. 4.6 c. 6.5 d. 7.2 e. 3.6
In Hubble's classification, which type of galaxy has a small bulge and loose, widely spread, poorly defined spiral pattern?
A) SO B) S9 C) Sa D) Sc E) SBw