An astronaut takes an ipod onto the space shuttle. an identical ipod remains on earth. which statement about the pull of earth's gravity on the ipods is true?   a. earth's gravity has a stronger pull on the ipod when it is on earth than when it is in space.  b. earth's gravity has a weaker pull on the ipod when it is on earth than when it is in space.  c. the pull of earth's gravity is the same on both ipods because they have the same mass.  d. the pull of earth's gravity is the same on both ipods because they are identical.

Next a skier is pulled by a tow rope up a frictionless ski slope that makes an angle of 15 with the horizontal. the rope moves parallel to the slope with a constant speed of 0.69 m/s. the force of the rope does 800 3 of work on the skier as the skier moves a distance of 8.4 m up the incline. (a) if the rope moved with a constant speed of 2.2 m/s how much work would the force of the rope do on the skier as the skler moved a distance of 8.4 m up the incline? at what rate is the force of the rope doing work on the skier when the rope moves with a speed of (b) 0.69 m/s and (c) 2.2 m/s?

Nacidified solution was electrolyzed using copper electrodes. a constant current of 1.18 a caused the anode to lose 0.584 g after 1.52 ✕ 103 s. given that the charge of an electron is 1.6022 ✕ 10−19 c, calculate avogadro's number. assume that copper is oxidized to cu2+ ions.

You charge a parallel-plate capacitor, remove it from the battery, and prevent the wires connected to the plates from touching each other. when you increase the plate separation, what happens to the following quantities?