Suppose a wheel is initially rotating at 10.0 rad/s while undergoing constant angular acceleration reaching a speed of 30.0 rad/s after 36.0 seconds have elapsed. How long after the initial time has the wheel undergone half of the angular displacement that it will have gone through during the entire 36.0-second interval?
a. 0.556 s
b. 22.2 s
c. 18.0 s
d. 56.5 s
b
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Suppose the jovian planet atmospheres were composed 100 percent of hydrogen and helium rather than 98 percent of hydrogen and helium. How would the atmospheres be different in terms of color and weather?
What will be an ideal response?
A nearsighted person cannot see objects clearly beyond 70 cm (the far point). If the patient has no astigmatism and contact lenses are prescribed, what is the power of the lens required to correct the patient's vision?
a. ?0.7 diopters b. ?1.4 diopters c. ?2.9 diopters d. ?7.0 diopters e. –700 diopters
A European sports car dealer claims that his product will accelerate at a constant rate from rest to a speed of 100 km/hr in 8.00 s. What is the speed after the first 5.00 s of acceleration? (Hint: First convert the speed to m/s.)
a. 34.7 m/s c. 23.1 m/s b. 44.4 m/s d. 17.4 m/s
What is the formula mass of sulfur dioxide, SO2?
A) about 16 amu B) about 32 amu C) about 60 amu D) about 64 amu