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A 50.0 kg child stands at the rim of a merry-go-round of radius 1.65 m, rotating by an angular speed of 2.50 rad/s.
a) What is the child's centripetal acceleration?
b) What minimum coefficient of static friction is needed?
c) What is the minimum force among her feet and the floor of the carousel that is required to keep her in the circular path?
The distance to a particular star, as measured in the earth's frame of reference, is 7.11 light years, How long does the trip take, according to observers on earth
a simple pendulum has a period of 2.40 seconds at a location where g 9.810 ms2. what is the value of g at another
An object oscillates in 1-D with an amplitude of 10 cm. At t = 0 s, its position is x = - 5 cm, What is the velocity of the object
In some places, insect "zappers," with their blue lights, are a familiar sight on a summer's night. how many turns are in the secondary coil
Air that occupies 0.15 cubic meters at 1.03e+05 Pa gauge pressure is expanded isothermally to atmospheric pressure and then cooled at constant pressure until it reaches its initial volume
Two capacitors, C1 = 28.0 µF and C2 = 41.0 µF, are connected in series, and a 18.0-V battery is connected across them. find the energy stored in each individual capacitor
How much work has he done? (b) Another player, wearing clothes that offer better protection against heat loss, is able to remain in the game long enough to do 2.1 × 105 J of work. What is the magnitude of the heat that he has lost?
When a wavelength is 300nm, its stopping potential is 1.10V. When it is changed to 200nm, the stopping potential is 3.06V. What value does this experiment yield for Planck's constant
Determine the wavelength of light emitted when a hydrogen atom makes a transition from the n = 13 to the n = 3 energy level according to the Bohr model. The Rydberg constant is 1.09737 × 10^7 m?1 .Answer in units of nm
A wheel 2.25 m in diameter lies in a vertical plane and rotates about its central axis with a constant angular acceleration of 3.50 rad/s2, find the angular position of the point P
A molecule of lithium fluoride (LiF) permanent dipole moment. The molecule is placed in a uniform electric field of strength 10^4 N/C, What is the electric dipole moment of the LiF molecule
A car initially traveling at 33.1 m/s undergoes a constant negative acceleration of magnitude 1.90 m/s2 after its brakes are applied. How many revolutions does each tire make before the car comes to a stop
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