Calculate the work done to stretch an elastic string by 40cm if a force of 10N produces an extension of 4cm in it

Which of the following items would have the lowest density? OA. A 12 cm3 block of aluminum with a mass of 2 grams OB. A6 cm3 block of ice with a mass of 4 grams OC. A 12 cm3 block of wood with a mass of 3 grams OD.

A child carries a 3N book at a constant velocity of 4 meters across a horizontal floor. What is the net work done? a) 0 J b) 7 J c) 10 J d) 12 J

Starting from the front door of your ranch house, you walk 50.0m due east to your windmill, and then you turn around and slowly walk 30.0m west to a bench where you sit and watch the sunrise. It takes you 27.

What ratio increases when a cell divides into two smaller cells?

One number is three times another. Their sum is 144. What are the numbers?

A 1.00-kg object A is connected with a massless string across a massless, frictionless pulley to a 2.00-kg object B. The smaller object rests on an inclined plane which is tilted at an angle of θ = 30.0° a.

Which of the following procedures was done to minimize human error? We let the weight swing 25 times and divided by 25 to get the avg period of one oscillation Why did we plot T2 vs L instead of just T vs L?

What percentage of the earth's surface is covered in water

Can swimmers hold their breath longer that people who don't swim. what is the hypothesis?

A baseball and a basketball, having the same mass, are dropped through air from rest such that their bottoms are initially at the same height above the ground, on the order of 1 m or more.