Question

1. Merari loves his dog, but his significant other doesn't want him distracted while he goes back to school. Telling him to get rid of his dog, and to get a new one when he graduates 3 years from now. Instead, Merari volunteers his dog for an NASA experiment. Where they send his dog to a small star 1.5 light years away and back, traveling at a speed 0.99c! How much older will Merari's dog be when it completes the trip?

2.While having a socially distanced barbecue with her family, Maria's dog digs up a dead cat. This causes Maria's family to get into a heated argument about how old the cat is. To stop her family from fighting, Maria grabs a 2 gram sample from the at and finds that the Carbon-14 in it undergoes 0.03 decays per second. Maria also knows Carbon-14 has a half-life of 5,730 years, and that when the cat was alive the sample underwent 0.5 decays per second. How long ago did Maria's cat die?

3.Henry is out walking (for exercise) when he sees Aliza in her Mercedes Benz convertible stopped a light. Aliza is blasting Tupac out of the 10 W speaker that she keeps in her trunk. If Henry is 75 m away from Aliza's Mercedes, how loud is Tupac?

Answer 1