Hi there,
I completely understand your frustration with this tricky homework question. Buoyancy can be a difficult concept to grasp, but with some practice and guidance, you'll be able to solve it in no time.
First, let's review the basics of buoyancy. It is the upward force exerted by a fluid (such as water or air) on an object immersed in it. This force is equal to the weight of the fluid that the object displaces.
To solve your homework question, you'll need to use the equation Fb = ρVg, where Fb is the buoyant force, ρ is the density of the fluid, V is the volume of the object submerged, and g is the acceleration due to gravity.
Make sure you have the correct values for each variable in the equation. Density can be given in different units, so double check that you are using the correct unit for your problem. Also, don't forget to convert the volume of the object to the same unit as the density.
If you're still having trouble, try drawing a diagram to visualize the problem. This can help you better understand the situation and identify any mistakes you may have made in your calculations.
Additionally, don't be afraid to ask for help from your teacher or classmates. Sometimes, discussing the problem with others can lead to a breakthrough.
Keep practicing and don't get discouraged. You'll get the hang of buoyancy and be able to solve tricky questions like this one in the future. Good luck!