Đang chuẩn bị liên kết để tải về tài liệu:
Biodiesel

Không đóng trình duyệt đến khi xuất hiện nút TẢI XUỐNG Tải xuống

Energy is defined as the ability to do work. Energy is found in different forms, such as heat, light, motion, and sound. There are many forms of energy, but they can all be put into two categories: kinetic and potential. Electrical, radiant, thermal, motion, and sound energies are kinetic; chemical, stored mechanical, nuclear, and gravitational energies are potential forms of energy