Cell phone jammers work by interfering with the signals exchanged between cell phones and nearby cell phone towers. As a result,
cell phones being affected by cell phone jammers do not receive communication signals from nearby towers.
How do cell phone jammers disable the communication between cell phones and nearby cell phone towers?
A.
Cell phone jammers reflect the signals emitted from cell phone towers away from cell phones in the area.
B.
Cell phone jammers absorb signals that are emitted by cell phone towers before they reach cell phones in the area.
C.
Cell phone jammers change the frequency of the signals emitted by cell phones and cell phone towers.
D.
Cell phone jammers transmit powerful signals at the same frequency as the signals used by cell phones and cell phone
towers.

Currents in dc transmission lines can be 100 a or higher. some people are concerned that the electromagnetic fields from such lines near their homes could pose health dangers. for a line that has current 150 a and a height of 8.0 m above the ground, what magnetic field does the line produce at ground level? express your answer in teslas and as a percentage of the earth’s magnetic field, which is 0.50 g. is this value cause for worry?

Which of the following are molecules? a. al b. ag c. mgcl2 d. nacl e. c3h8

Use the library or internet to research each planet. make a chart comparing the following: approximate surface temperature relative surface gravity compared to earth atmospheric gases water in any form: solid, gas, or liquid when you have completed your chart, use the information you have collected to answer the following questions: which is the hottest planet? which is the coldest planet? which planet's temperature is closest to that of earth? (note: water boils at 100°c/212°f. water freezes at 0°c/32°f) which planet has the greatest gravitational attraction? which planet has the least gravitational attraction? which planet's gravitational pull is closest to that of earth? do any of the planets have oxygen in their atmosphere? which planet's atmosphere most resembles that of earth? do any of the planets have flowing water? which planet's water resources (solid, gas, or liquid) might be close to the amount on earth? which planet most resembles earth in terms of all of the factors: temperature, gravity, atmosphere, and water? if earth became an uninhabitable planet, which planet do you think would be the next best to live on? explain your answer.