The global positioning system, or gps, uses a network of satellites that orbit the earth to calculate and track locations. which of the following best describes the signals sent and received by satellites? a. gravitational energy b. potential energy c. sound waves d. electromagnetic waves

7. what temperature is need to just dissolve 50 g of nh4cl in 75 g of water? '

Asa choose the correct set of reaction coefficients to properly balance the following chemical equation according to the law of conservation of mass: __s8 + __o2 ==> __so2 1, 1, 8 1, 8, 1 1, 8, 8 8, 1, 1

24. a sports ball is inflated to an internal pressure of 1.85 atm at room temperature (25 °c). if the ball is then played with outside where the temperature is 7.5 °c, what will be the new pressure of the ball? assume the ball does not change in volume nor does any air leak from the ball a) 0.555 atm b) 1.74 atm c) 1.85 atm d) 1.97 atm