Physics, 29.06.2019 04:20 22chandlerlashley
A0.144 kg baseball moving 28.0 m/s strikes a stationary 5.25 kg brick resting on small rollers so it moves without significant friction. after hitting the brick, the baseball bounces back, and the brick moves forward at 1.1 m/s (a) for determining baseball's speed after the collision, do you need to use momentum conservation, energy conservation or both? give reasons for your answer (marks will only be awarded if reasoning is qiven). (b) what is the baseball's speed after the collision? (c) find the total mechanical energy before and after the collision. (d) show that the collision is inelastic. (e) is the kinetic energy of the system conserved? give a reason. (f is the total energy of the system conserved? give a reason
Answers: 2
Physics, 22.06.2019 00:20, thedocgalloway
You have been consulted by the mobile phone company hookup about a new augmented reality product called “brows”. they want to develop an alternative to google glasses, which, you recall, is a proposed new product which plans to superimpose a whole range of wireless google services over the user’s ordinary vision of the world. these appear in little circles and ovals, and let you phone people, take photographs, navigate across cities and inside buildings, find shops and update your social media. brows would do this too, but not be limited to special google services. the user would wear a small cylinder-shaped device designed to fit on top of their existing eyewear (glasses or sunglasses). it would project a reversed image onto the inside of the lenses, the reflection of which would be in focus for the user. instead of voice control, the user would control the device by eye and neck movements, which the device would track. the device would connect via bluetooth to the user’s phone, which would supply most of the computing power and wireless connectivity. hookup also wants to know what existing services would be most in demand, and which would not work well with brows. using your knowledge of augmented reality, wearable technology and interface design, is the project feasible? if not, why not? if feasible, how could the product need to be modified for a better experience?
Answers: 2
Physics, 22.06.2019 10:30, antoinewill05
J. j. thomson’s experiment disproved the theory that an atom
Answers: 3
Physics, 22.06.2019 12:00, drivinghydra
Aboat radioed a distress call to a coast guard station. at the time of the call, a vector a from the station to the boat had a magnitude of 45.0 km and was directed 15.0° east of north. a vector from the station to the point where the boat was later found is = 30.0 km, 15.0° north of east. what are the components of the vector from the point where the distress call was made to point where the boat was found? in other words, what are the components of vector c = b - a?
Answers: 3
A0.144 kg baseball moving 28.0 m/s strikes a stationary 5.25 kg brick resting on small rollers so it...
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