Which of the following is a chemical reaction? (hint: think of the table with signs of a chemical reaction.) a. a book being opened b. a shoe being dropped on the floor c. a spoon bending d. gasoline burning

Ineed extreme for task 2. my student number is 571721. many to whoever solves this correctly, im in debt to you.

Avalue that describes how heavy an object is and is related to the force of gravity is

Suppose you have three polarizing filters, with the second at an angle of 42∘ to the first and the third at an angle of 90∘ to the first. by what perfect will the original intensity of unpolarized light be reduced to after passing through all three filters?