2nd and 3rd class levers

The second and third periods are known as short periods. Each consists of eight elements. The second period starts with lithium (Z = 3) and ends with inert gas neon (Z = 10). The third period starts with sodium (Z = 11) and ends with argon (Z = 18..

The table shows the percentage of scores obtained by Ethan each year during his four year degree course. Which of the following is the equivalent box-and-whisker plot of the data? Also find out the median of scores obtained. Year Percentage of scores 1st Year 70 2nd Year 82 ..

Describe how the price of a pen changed after three years. Time Price of a Pen Initial $5.00 after 1st year $6.00 after 2nd year $6.50 after 3rd year $6.95 => varying or decreasing or increasing or constant..

The table shows the quarterly sales of two products A and B. Which bar graph represents the data shown in the table? Quarters Sales of Product A (in million dollors) Sales of Product B (in million dollors) 1st Qtr 15 20 2nd Qtr 50 34 3rd Qtr 25 40 4th Qtr 30 ..

The time of a pendulum′s swing varies directly with the square root of its length. If the pendulum is 1 ft long when the time is 0.2 second, find the time if the length is 9 ft. => 0.6 second or 1.8 seconds or 15 seconds or 0.8 seconds..

A simple crowbar can be used to lift a heavy rock with a small effort. The crowbar is an example of a lever. The use of levers was known to the ancient Greeks, and it is reported that Archimedes once remarked "Give me a lever long enough and I will move the world" A ..

The distance AF is called the effort arm and the distance BF is called the load arm. If the lever is in equilibrium, then by applying the principle of moments about the fulcrum, we get Clockwise moment = Anticlockwise moment Effort x Effort arm = Load x Load arm The ratio of the effort..

Perform the given operation: 91 feet 2 seconds × 174 seconds 3 hours × 9 miles 819 feet => 290 miles/hour or 580 miles/hour or 58 miles/hour or 29 miles/hour..

In class III levers effort is situated between the load and the fulcru..

Force Work Power Energy and Machines..