Activity 3: Problem Solving Read and analyze each problem. Show your sequential solution through GUFSA Method. Attach a paper of any size for your answer and submit it together with this module. 1. The area of contact between an injection needle and the skin is a very tiny circle with a diameter of 2.54 x 103cm. If the needle exerts a force of 6.9x 102 N, what is the pressure in N/m? 2. An aluminum cylinder has a volume of 60 mL. Calculate the buoyant force that will be exerted on the cylinder when it is immersed in (a) water (b) alcohol (density 0.78g/mL). 3. A 5.16 m narrow concrete road is exposed under the heat of the sun from 30.80 to 45.2 C. By how much will it expand? How long will its new length be? Score Guide GUFSA Method Given: 1 point Unknown: 1 point Formula: 1 point Solution: 1 point Answer: 1 point Total = 5 points