Your laptop lcd panel is blank when you boot up. you can hear the laptop turn on, and the keyboard backlight is on. you have checked the brightness using the function keys, and that is not the problem. what is an easy next step to determine if the lcd panel has failed? describe how that next step can also if the lcd panel has failed, but the replacement components won't arrive for a week and you still need to use your laptop.

One hazard of space travel is debris left by previous missions. there are several thousand masses large enough to detect by radar orbiting the earth, but there are far greater numbers of very small masses such as flakes of paint. calculate the force exerted by a 0.110 mg chip of paint that strikes a space shuttle window at a relative speed of 5.00 ✕ 103 m/s and sticks, given the collision lasts 6.00 ✕ 10-8 s. such a collision chipped the window of the ill-fated challenger in june 1983, causing $50,000 of damage.