In a science lab Cash mixes two clear liquids together in a beaker. Bubbles are produced and a white solid forms and settles at the bottom. He plans to heat the beaker over a low heat and make more observations. which statement is most likely correct?

A.) A physical change occurred so if cash heats up the white solid will disolve to form the origanal mixture of clear liquids.

B.) A physical change occurred so even if cash heats up the white solid will remain.

C.) A chemical change occurred so if cash heats up the white solid will disolve to form the origanal mixture of clear liquids

D.) A chemical change occurred so even if cash heats it the white solid will remain

We all use gps today, even if we don't drive yet. i bet you have been in the car with a parent and they have asked you to get out your phone to find a specific location. in your car, on the phone, you are using a very sophisticated technology. gps satellites circle the earth twice a day in a very precise orbit and transmit signal information to earth. gps receivers take this information and use trilateration to calculate the user's exact location. essentially, the gps receiver compares the time a signal was transmitted by a satellite with the time it was received. the time difference tells the gps receiver how far away the satellite is. now, with distance measurements from a few more satellites, the receiver can determine the user's position and display it on the unit's electronic map. what type of signal is utilized by the gps satellite?

What tightening torque should be used for a hexagonal head screw (not split-bolt) on a 250 kcmil conductor?

What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration