Discover Questions

Poll: How long will it take to save up $8,000 if I work Monday-Saturday 7am to 3:30pm and make $13 an hour? If the ramp is 12 long and 3 high, what force would it take to slide the block up the ramp?? How many photons of electromagnetic radiation of frequency 4.56 MHz are needed to have a total energy of 5.4J? Find sinθ and tanθ if cosθ =4/5 and tanθ <0. Please help!? Is this correct? Thanks?