What types of simple machines are in a bicycle

How is active transport possible since it contradicts the second law of thermodynamics?

During a solar eclipse, the moon (of mass 7.36 * 1022 kg), Earth (of mass 5.98 * 1024 kg), and Sun (of mass 1.99 * 1030 kg) lie on the same line, with the moon between Earth and the Sun.

If scientists noted that a protozoan developed a cyst, they could safely assume that:

I need a brief explanation on how TV remotes use infrared waves.

The law of conservation of energy states that A. energy cannot be converted from one from to another B. energy cannot be created or destroyed C. energy resources must be used efficiently D. energy is constantly being lost to friction

The metric system is based on units of A: twenty five B fives C: sixteen D: tens

Which of the following could be used to send an receive electromagnetic waves at the same time?

Tim is riding a bike at a velocity of 10m/s north. As he starts to climb a hill, his velocity decreases to 5 m/s north. Is the acceleration positive or negative? Calculate the acceleration.

What is the theme of the car we had to push?

State the law of conservation of energy in your own words