A lever is used to lift a heavy weight. The length of the input arm of the lever is 3 m, the length of output arm is 1 m.

What is the mechanical advantage of the lever?

3

1

4

0.33

It is known that a certain kind of algae in the Dead Sea can double in population every 2 days. Suppose that the population of algae grows exponentially, beginning now with a population of 1,000,000.

Red-orange sunsets and blue skies are a result of what type of light-matter interaction? Mirage Polarization Scattering Diffusion

If the velocity of a car is 45 km/h west how far can it travel in 0.5 hours?

Some runners train with parachutes that trail behind them to provide a large drag force. These parachutes are designed to have a large drag coefficient. One model expands to a square 1.8 m on a side, with a drag coefficient of 1.4.

Which part of the sound wave influences how loud or quiet a sound wave is

What topic in a biology textbook is directly related to physics

A soccer ball player bounces the ball off her head, changing the velocity of the ball. She changes the x-component of the velocity of the ball from vix = 7.9 m/s to vfx = 5.9 m/s and the y-component from viy = - 3.4 m/s to vfy = 4.5 m/s.

Do you think an observer on another planet in the solar system might see eclipses

A. A vector is any element of a vector space. Is this statement true or false? A. True by the definition of a vector space B. False; not all vectors are elements of a vector space. C. False; a vector space is any element of a vector.

19 Which gas is the most abundant greenhouse gas? A. ozone B. chlorofluorocarbon C. carbon dioxide OD. methane E. water vapor Reset Next