Pacemakers designed for long-term use commonly employ a lithium-iodine battery capable of supplying 0.42a⋅h of charge. part ahow many coulombs of charge can such a battery supply? part bif the average current produced by the pacemaker is 5.6μa, what is the expected lifetime of the device?

After the near spacecraft passed mathilde, on several occasions rocket propellant was expelled to adjust the spacecraft's momentum in order to follow a path that would approach the asteroid eros, the final destination for the mission. after getting close to eros, further small adjustments made the momentum just right to give a circular orbit of radius 45 km (45 × 10^3 m) around the asteroid. so much propellant had been used that the final mass of the spacecraft while in circular orbit around eros was only 545 kg. the spacecraft took 1.04 days to make one complete circular orbit around eros. calculate what the mass of eros must be.

What type of nuclear decay causes the atomic number of an element to increase by 1?

What is the primary force that suspension bridges use cables to hold their spans up? a. tension force b. resistance force c. normal force d. elastic force e. applied force