Jackie finds the passage below on the National Institutes of Health (NIH) Web site. The NIH is an agency of the U. S. government. "Recent studies have shown a strong correlation between frequent, long-term use of an indoor tanning facility and an increased risk of melanoma, which is a type of skin cancer. Indoor tanning beds expose human skin to ultraviolet light, which is energetic enough to damage living cells by ionizing their atoms. Although additional research is needed to fully characterize the relationship between ultraviolet light and skin cancer, it is clear that indoor tanning-bed use represents an avoidable risk factor for melanoma, which can be lethal."

Jackie thinks that the authors of the passage are misrepresenting the characteristics of electromagnetic radiation. Is she correct?

A.
No; ultraviolet light is energetic enough to ionize some of the atoms it encounters and cause damage to living cells.
B.
No; exposure to low-energy radiation, including ultraviolet light, is widely recognized as a risk factor for skin cancer.
C.
Yes; ultraviolet light is energetic enough to pass through most materials, including living matter, unimpeded.
D.
Yes; information found on government Web sites is rarely accurate or unbiased, so the claims about ultraviolet light cannot be trusted.

When a resistor with resistance r is connected to a 1.50-v flashlight battery, the resistor consumes 0.0625 w of electrical power. (throughout, assume that each battery has negligible internal resistance.) what power does the resistor consume if it is connected to a 12.6-v car battery? assume that r remains constant when the power consumption changes.

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?

Apebble is thrown into a calm lake, ripples are formed from the center and move outward. the water particles in the lake travel in a circular pattern that moves up and down on the surface of a lake, and the energy travels a) diagonally. b) downward. c) horizontally. d) upward.