If p1 = 900 kPa, the force of the water on the nozzle is nearest:
(A) 6910 N
(B) 6470 N
(C) 5120 N
(D) 4920 N
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A 0.6-kg sample of a wooden artifact has an activity of 2.00 × 10^3 decays per minute. What is the age of the artifact? Note that living material has an activity of 15.0 decays/minute per gram of carbon present, and T1/2 for 14C is 5730 yr
a. 12,434 yr b. 8,618 yr c. 18,164 yr d. 12,590 yr
What kinds of planets are easiest to detect with each method?
What will be an ideal response?
At closest approach Venus is about how far from Earth?
A) 0.7 AU B) 0.5 AU C) 0.4 AU D) 0.3 AU E) 0.1 AU
A railroad car with a mass of 20,000 kg rolls into a second stationary car with a mass of 40,000 kg. The cars latch together and move off with a speed of 1.2 m/s. How fast was the first car moving before the collision?