Select an example of a vertical motion with a positive velocity and a negative acceleration. select the correct example and explanation. a)a tossed ball on its way down. as the ball moves down it is slowing down, hence the acceleration is opposite the bvelocity (negative).b) a tossed ball on its way upward. as the ball moves upward it is slowing down, hence the acceleration is pointing in the same direction as the velocity (negative).c) a tossed ball on its way upward. as the ball moves upward it is slowing down, hence the acceleration is opposite the velocity (negative).d) a tossed ball on its way down. as the ball moves down it is slowing down, hence the acceleration is pointing in the same direction as the velocity (negative).

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?

On a geologic map, if the contacts between sedimentary rock units form a bull’s-eye pattern of concentric circles, with the youngest unit in the center, the underlying structure is a(n)

The protons in a nucleus are approximately 2 ✕ 10^−15 m apart. consider the case where the protons are a distance d = 1.93 ✕ 10^−15 m apart. calculate the magnitude of the electric force (in n) between two protons at this distance.