1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
SCORPION-xisa [38]
3 years ago
15

How hard must someone pull on the unkown line and inwhat direction to keep the knot from moving ​

Mathematics
1 answer:
dolphi86 [110]3 years ago
4 0

Answer:

4.4N, 263.4°

Step-by-step explanation:

The sum of all forces must add to zero:

The forces in the x-plane:

∑F = 3N + (cos 120°)*5N + x = 0

x = -(3N + (cos 120°)*5N)

x = -0.5N

The forces in the y-plane:

∑F = (sin 120°)*5N + y = 0

y = -(sin 120°)*5N = -√(3/4)*5N = -4.3N

The magnitude of the unknown force U is:

U = √(x² + y²) = √19 = 4.4N

The direction is given by:

tanФ = y/x

Ф = 263.4°

You might be interested in
Show that a discrete metric on a vector space X≠{0} cannot be obtained from a norm (the pair (X,d) is called the discrete metric
topjm [15]

You know that the discrete metric only takes values of 1 and 0. Now suppose it comes from some norm ||.||. Then for any α in the underlying field of your vector space and x,y∈X, you must have that

∥α(x−y)∥=|α|∥x−y∥.

But now ||x−y|| is a fixed number and I can make α arbitrarily large and consequently the discrete metric does not come from any norm on X.

Step-by-step explanation:

hope this helps

4 0
1 year ago
Show steps on how to solve 5980/25
Elodia [21]

Answer: 2395.2

Step-by-step explanation:

25/2395  25/59=2 25/98=3 25/238=9 25/130=5 decimal point then bring down 0 =2395.2

8 0
2 years ago
Graph the function y=-0.5 sqrt x-3+2
Kay [80]
The graph of <span>y=-0.5 sqrt (x-3)+2
Df= {x/x-3>=0}
Df= [3, + infinity[
derivative of f(x)
f'(x)= -0.5 x 2 /</span>sqrt (x-3)= - 1/sqrt (x-3) <0, f is a decreasing function for all x in the Df
limf(x)=2 x--------->3,  limf(x)=-infinity, x--------->+infinity

look at the graph

3 0
3 years ago
Read 2 more answers
Is 3.667 a rational number,interger,or whole number
steposvetlana [31]
Rational 3667/1000
^^^^^^^^^^^
4 0
2 years ago
The 32 oz can
Agata [3.3K]
30 I think not sure tho
6 0
2 years ago
Other questions:
  • Algebra question help needed please
    7·1 answer
  • Alexis bought x boxes of cereal for $3 each, including tax, and paid with a $20 bill. Which expression represents the total amou
    8·2 answers
  • PLEASE HELP idk what any of this means. 25 points
    8·1 answer
  • Which of the following math statements contains variables? check all that apply
    6·2 answers
  • A bank account with an initial deposit of $4,000 and an interest rate of 4% increases by 4% each year. The balance (B) as a func
    8·1 answer
  • Plz help i dont want to fail
    15·2 answers
  • In which figure is the height of the cylinder half the radius? A cylinder with a height of 2 and diameter of 8. A cylinder with
    15·2 answers
  • What is the value of x?<br><br> O 6<br> O 62<br> O 12<br> O 122
    10·2 answers
  • Pls help extra points and mark brainlist
    13·1 answer
  • HELP ME WITH THIS PLEASEEE
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!