A mass on a horizontal spring is displaced 10 centimeters when pushed with 100 N of force. What is the spring constant? 10 N/m

0.1 N/m

1000 N/m

1 N/m

When you swing on a playground, you are undergoing simple harmonic motion. What is the source of the restoring force?

The force of gravity

The normal force

The spring force

The frictional force

Check any options below that illustrate reflection of a wave at a free boundary.

rope tied to a wall

flute

organ pipe

slinky held at one end

PLL HELPPP ASAP

Classify the following soils according to the uscs classification system. provide appropriate uscs designations. a) this sample of well-graded gravel with sand was obtained from a large earthen dam in vancouver, canada. the sample has 73% fine to coarse sub-angular gravel, 25% fine to coarse sub-angular sand and 2% fines. the maximum size of the particles is 75 mm. the coefficient of curvature is 2.7, while the uniformity coefficient is 12.4. b) this dark brown and wet soil with a “strong organic odor” has 100% passing the no. 200 sieve. the liquid limit of the material is 32% when not dried and is 21% when oven-dried. the plastic index is 21% when not dried. c) this sand has 61% predominantly fine sand, 23% silty fines, and 16% fine sub-rounded gravel size. the maximum size is 20 mm. the liquid limit is 33% and the plastic limit is 27%. d) this soil has 74% fine to coarse sub-angular reddish sand and 26% organic and silty dark brown fines. the liquid limit is 37% when not dried and is 26% when oven dried. the plastic index is 6% when not dried.

Ababy stroller is a rest on top of a hill which is 10 m high. the stroller and baby have a mass of 20 kg. what is the potential energy of the baby and stroller?

Diamond will scratch quartz. true or false