paul499111 paul499111

23-10-2020
Physics

contestada

Calculate the dot product of D and E, where D=7i - 3j + 2k and E=4i + 5j - 3k.

please show working

Respuesta :

23-10-2020

Answer:

Since i dot i = 1 and j dot j = 1 and k dot k = 1 and the other terms are zero

(7 i - 3 j + 2 k) dot (4 i + 5 j - 3 k) = 28 - 15 -6 = 7

Answer Link

Otras preguntas

What is the formula of the molecule in figure 3

In an effort to determine whether any correlation exists between the prices of stocks of airlines, an analyst sampled six days of activity of the stock market.

How did the Age of Exploration impact the colonization of Florida? Especially between the French and Spanish?

me podrian ayudar con el "acoso escolar" que tenga introducción , desarrollo y conclusión , xfa es para mañana urgente

EMS NERVOUS SYSTEM ING

A Carnot heat engine receives 500 kJ of heat per cycle from a high- temperature heat reservoir at 652ºC and rejects heat to a low- temperature heat reservoir at

Giggly Goofo Game Studios Incident Response Team - Incident Reporting Template Date Insert current date here. Name Insert your name here. Incident Priority Defi

Two particles X and y starting from rest cover the same distance. The acceleration of x is twice that of Y. The ratio of the time TAKEN by X to that taken by Y

if A={3,4,5,6},B={6,7,8,10}and R is relation from set A to B define by "is half of“ then find the element of R

Which is one of the 10 warning signs of Alzheimer’s disease