Please help me I will give out the brain thing
The kind of weathering caused by water freezing in rocks is known as

Question 1 options:

chemical weathering

mechanical weathering

root-pry

pedalfer

The of a machine determines its "usefulness." a. input force b. output force c. mechanical advantage

Aballet student who learns with the of his instructor is demonstrating learning.

The starship enterprise is caught in a time warp and spock is forced to use the primitive techniques of the 20th century to determine the specific heat capacity of an unknown mineral. the 125-g sample was heated to 96.3°c and placed into a calorimeter containing 85.9 g of water at 20.0°c. the heat capacity of the calorimeter was 14.2 j/k. the final temperature in the calorimeter was 24.5°c. what is the specific heat capacity (in j/g°c) of the mineral? enter to 4 decimal places.