I PARTE. Suma y resta de Vectores conociendo sus expresiones analíticas. 1. Sean los vectores siguientes:

A = −5i − 3j + k
B = −3i − j − 2k

Hallar:
a. A + B;
b. A – B;
c. Un vector unitario en la dirección de A + B;
d. La dirección de A – B.

What is a possible result of higher air temperature caused by global warming

The brightest star in the night sky in the northern hemisphere is sirius. its distance from earth is estimated to be 8.7 light years. a light year is the distance light travels in one year. light travels at a speed of 3.00 × 108 m/s. calculate the distance from earth to sirius in miles. (1 mi = 5280 ft) g

Which of the following is a true statement about the acceleration ~a of the pendulum bob ~a is equal to the acceleration due to gravity. ~a is perpendicular to the bob’s trajectory. ~a is equal to the instantaneous rate of change in velocity. ~a is tangent to the bob’s trajectory.