Which of the following should people living in an earthquake prone region avoid? A Constructing houses using materials like wood B. Keeping flammable items and household chemicals near heat C. Having a battery powered radio, fire extinguisher and a first aid kit D. Learning how to switch off the gas, water and electricity​

How are brightness and size related when it comes to stars

Which of the following would be considered a nec code violation in regards to the installation of luminaires? a. an outdoor lighting fixture mounted to a tree b. a five-pound, 12-inch diameter light fixture supported by the screw shell of the lampholder c. florescent lay-in fixtures attached to the framing sections of a suspended ceiling with sheet-metal screws d. track lighting over a sink, 2 feet from a bathtub

How do refracting telescopes magnify a far away image? a. by directing light beams to meet at a focal point b. by absorbing light beams’ wavelengths c. by forcing light beams to change direction d. by measuring light beams’ velocity