2.08

5 of 10

A horse canters away from its trainer in a straight line, moving 40 m

m

away in 8.8 s

s

. It then turns abruptly and gallops halfway back in 1.6 s

s

.

1. Which of the following explains why a bicycle uses the pedals as a lever to move the heavy rider along the sidewalk? A. reduces the effort force B. increases the effort force C. reduces the resistance force D. increases the resistance force 2.

Which of the following is not an illuminated object? human being desk sidewalk light bulb

Replace oxygen sensor but light still on

When clouds typically produce precipitation and why?

The Slowing Earth The Earth's rate of rotation is constantly decreasing, causing the day to increase in duration. In the year 2006 the Earth took about 0.840 longer to complete 365 revolutions than it did in the year 1906.

Which organisms develop gills from pharyngeal arches and later develop lungs to breathe on land

How much energy (in joules) is required to evaporate 0.0005 kg of liquid ammonia to vapor at the same temperature?

It is 5.5 km from your home to the physics lab. As part of your physical fitness program, you could run that distance at 10 km/h (which uses up energy at the rate of 700 W), or you could walk it leisurely at 3.0 km/h (which uses energy at 290 W).

The largest volcanic structures on venus are called:

a block with a mass of 3 kg is swung on a cord in a horizontal circle with a radius of 2m. the speed of the block is 6m/s^. the magnitude of the acceleration of the block is most nearly