The slope of a velocity vs. time graph is the acceleration
a. True
b. False
Indicate whether the statement is true or false
True
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Light is incident on a double-slit. The fourth bright band has an angular distance of 7.0° from the central maximum. What is the distance between the slits (in ?m)? (Assume the frequency of the light is 5.4 × 10^14 Hz.)
a. 27 b. 21 c. 24 d. 18 e. 14
Vision Problems: What is the focal length of a contact lens that will allow a person with a near point of 125 cm to read a physics book held 25.0 cm from his eyes?
A. -100 cm B. -31.3 cm C. 10.2 cm D. 20.8 cm E. 31.3 cm
A 6.0 ? and a 12. ? resistor are connected in series to a 36. V battery. What power is dissipated by the 12.0 ? resistor?
A) 216. W B) 486. W C) 12. W D) 24. W E) 48. W
A plastic block of dimensions 2.00 cm × 3.00 cm × 4.00 cm has a mass of 30.0 g. What is its density?
A) 0.80 g/cm3 B) 1.20 g/cm3 C) 1.25 g/cm3 D) 1.60 g/cm3