What causes the centripetal acceleration of an electron in a hydrogen atom?
electrical attraction <---------******
gravity
friction <--
tension
Question 2. Which of the following terms might a jet pilot use to describe a force that presses him against his seat during a high-speed turn?
radial force
centrifugal force <-- YES
tangential force
perpendicular force
Question 3. A 35.0 kg boy is riding an amusement park roundabout with a radius of 10.0 m. The roundabout makes one turn every 2.00 s. What is the centripetal force that the boy experiences?
F = m a = m r omega^2
omega = 2 pi f = 2 pi*(1/2) = 3.14
omega^2 = 9.87
so
F = 35 * 10 * 9.87 = 3.45*10^3 Newtona
2.20 × 102 N
3.46 × 103 N <-- YES
3.46 × 104 N
1.10 × 102 N
What causes the centripetal acceleration of an electron in a hydrogen atom?
electrical attraction
gravity
friction <--
tension
Question 2. Which of the following terms might a jet pilot use to describe a force that presses him against his seat during a high-speed turn?
radial force
centrifugal force <--
tangential force
perpendicular force
Question 3. A 35.0 kg boy is riding an amusement park roundabout with a radius of 10.0 m. The roundabout makes one turn every 2.00 s. What is the centripetal force that the boy experiences?
2.20 × 102 N
3.46 × 103 N <--
3.46 × 104 N
1.10 × 102 N
2 answers
Number 1 is electrical attraction. Number 2 and 3 are correct.
2 answers