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A 52.0-kg child takes a ride on a Ferris wheel that rotates four times each minute and has a diameter of 20.0 m.
(a) What is the centripetal acceleration of the child?
magnitude: _________ m/s2
(b) What force (magnitude and direction) does the seat exert on the child at the lowest point of the ride?
magnitude:__________ N
(c) What force does the seat exert on the child at the highest point of the ride?
magnitude: ________ N
(d) What force does the seat exert on the child when the child is halfway between the top and bottom? (Assume the Ferris wheel is rotating clockwise and the child is moving upward.)
magnitude: ______ N
direction: _________ ° counter-clockwise from the horizontal
A door made of a uniform piece of wood measures 1 m by 2 m and has a mass of 18 kg. Find the force (mag and direction) that the door exerts on the hinge
A 25 kg swings on a playground swing. If the swing hangs down 3 m from the top bar, and the child swings out 20 degrees, what is the change in potential energy of the child
Coherent ligh of a wavelength 500nm passes through a narrow slit. In the single-slit diffraction pattern observed on a screen that is 4.0m from the slit, what will the width of the central maximum be
A segment of wire carries a current of 20 A along the x-axis from y=2.0 m to y=0 and then along the x axis from x=0 to x=-4.0 m. What is the magnitude of the force on this segment of wire
question1a person eats a dessert that contains 210 calories. this calorie unit with a capital c is the one used by
An intergalactic rock star bangs his drum every 1.30 s. A person on earth measures that the time between beats is 2.10 s. How fast is the rock star moving relative to the earth
A parallel-plate capacitor with only air between the plates is charged by connecting it to a battery, A voltmeter reads 46.0V when placed across the capacitor, What is the dielectric constant of this material
The magnetic flux through one turn of a 52-turn coil of wire is reduced from 28.1 Wb to 4 Wb in 0.10 s. Find the total resistance of the wire
An air-filled capacitor consists of two parallel plates, each with an area of 7.60 cm2, separated by a distance of 1.40 mm. If a 23.0 V potential difference is applied to these plates, calculate the electric field between the plates
q1. a person eats a dessert that contains 260 calories one. the skin temperature of this individual is 36 degree
An isolated copper sphere of radius 4.85cm, at first uncharged, is illuminated by ultraviolet light of wavelength 244nm. The work function for copper is 4.70 eV. What charge does the photoelectric effect induce on sphere.
Two 0.80g spheres are charged equally and placed 2.0cm apart. When released, they begin to accelerate at 160m/s^2. What is the magnitude of the charge on each sphere?
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