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Question: A child (20 kg) is lying on his hospital bed with the side railings down. The patient turns sideways and starts to fall off his bed, which is 1.2 m tall. The healthcare professional sees the patient falling and attempts to break the fall by throwing a pillow on the floor directly below the child. If it took 0.3 s to get the pillow in place, will the pillow cushion the child's fall before he hits the floor? (Assume that the pillow thickness is negligible for calculation purposes).
A plastic rod is charged to -20 nC by rubbing. How many electrons have been added or protons removed
Two coils are close to each other. The first coil carries a current given by i(t) = 5.60e-0.0250t sin 120πt, where i is in amperes and t is in seconds. At t = 0.835 s, the emf measured across the second coil is -2.75 V. What is the mutual inductan..
You are asked to design a spring that will give a 1000 kg satellite a speed of 3.20 m/s relative to an orbiting space shuttle. find What distance must the spring be compressed
A converging lens with a focal length of 92.0 cm forms an image of 32.0 cm tall real object that is to the left of the lens. The image is 4.60 cm tall and inverted. Where are the object and image located in relation to the lens? Is the image real or ..
liquid crystal display lcd projectors have a small lcd screen inside of them. this emits light and serves as the object
A 1000-kg cart is rolling to the right at 5m/s. A 75-kg man is standing on the right end of the cart. What is the speed of the cart if the man suddenly starts running to the left with a speed of 10.00m/s relative to the cart.
Yellow light travels 0.680 times as fast in a certain type of plastic than in a vacuum. What is the index of refraction for yellow light in the plastic
A particle with a charge of -60.0 nC is placed at the center of a nonconducting spherical shell of inner radius 19 cm and outer radius 31.0 cm. What is the total amount of charge on the nonconducting shell
A diffraction grating with 280 lines per mm is used in an experiment to study the visible spectrum of a gas discharge tube. At what angle from the beam axis will the first order peak occur if the tube emits light with wavelength of 400.0 nm? At what ..
A parallel-plate capacitor with plates of area 420 cm2 is charged to a potential difference V and is then disconnected from the voltage source. When the plates are moved 0.4 cm farther apart, the voltage between the plates increases by 100 V.
Suppose that some ancient writings on parchment are found sealed in a jar in a cave. What percentage of the original carbon-14 atoms still remains in the sample
Block A with mass 0.050 kg is released from rest at the rim of a frictionless hemispherical bowl that has radius R = 0.600 m. What is the speed of the combined object
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