A small golden statue falls from a height of 8.2 m above the top surface of a pillow. If the acceleration of the statue upon striking the pillow is constant, what is the value of the acceleration if the pillow compresses by 3.9 cm as the statue comes to rest?
A. 2100 
B. 21
C. 160
D. 210
A. 2100
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Consider the curve f(x) = A cos(2px/l). The wavelength of the wave will be:
a. the distance 0 to A. c. twice the distance x2 to x3. b. twice the distance 0 to A. d. the distance x2 to x3.
A skydiver who weighs 500 N reaches terminal velocity at 90 km/h. The air resistance on the skydiver is
A) 90 N. B) 250 N. C) 410 N. D) 500 N. E) none of the above
A Young's double-slit apparatus is set up where a screen is positioned 0.80 m from the double slits. If the distance between alternating bright fringes is 0.83 cm, and the light source has a wavelength of 580 nm, what is the separation of the double slits? (1 nm = 10-9 m)
a. 6.0 × 10^-5 m c. 4.9 × 10^-5 m b. 2.8 × 10^-5 m d. 5.6 × 10^-5 m
What mass of 14C (having a half-life of 5730 years) do you need to provide a decay rate of 280.0 Bq? (1 u = 1.6605 × 10-27 kg)
A) 1.70 × 10-12 kg B) 5.38 × 10-19 kg C) 3.84 × 10-20 kg D) 8.68 × 10-13 kg