Three cars crash are in a crash at an intersection. The first one has a momentum of 3.00 x 10 kg*m/s at 22.0° south of east. The second one has a momentum of 1.80 x 104 kg*m/s at 12.8" South of west. The third car has a momentum of 3.74 x 104 kg*m/s at 10.0° east of south. What was the total momentum of the cars before the crash (magnitude and direction)?

Aperson gives a shopping cart an initial push along a horizontal floor to get it moving, and then lets go. the cart travels forward along the floor, gradually slowing as it moves. consider the horizontal force(s) on the cart while it is moving forward and slowing. which of the following statements is correct? (a) both a forward and a backward force are acting on the cart, but the forward force is larger. (b) only a forward force is acting which diminishes with time. (c) both a forward and a backward force are acting on the cart, but the backward force is larger. (d) only a backward force is acting, no forward force.

Give me a example of a decomposer. explain what would happen if decomposers were absent from a forest ecosystem

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.