Can someone please help me think of an idea for this. My teacher wants me to think of a gadget that uses two simple machines, and it has to be able to help a child or an elderly person with a house hold chore. Please help me come up with an idea.

If an object with an initial temperature of 300 k increases its temperature by 1°c every minute, by how many degrees fahrenheit will its temperature have increased in 10 minutes? (a) 6°f (b) 10°f (c) 18°f (d) 30°f

In a given chemical reaction, the energy of the products is greater than the energy of the reactants. which statement is true for this reaction?

Which explanation describes the forces involved for a person to walk down the sidewalk? a. the person's feet push backward on the sidewalk; the sidewalk pushes backward on the person. b. the person's feet push forward on the sidewalk; the sidewalk does not push on the person. c. the person's feet push backward on the sidewalk; the sidewalk pushes forward on the person. d. the person's feet push forward on the sidewalk; the sidewalk pushes forward on the person.