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
xxTIMURxx [149]
2 years ago
9

In a tug-of-war game on one campus, 15 students pull on a rope at both ends in an effort to displace the central knot to one sid

e or the other. Two students pull with force 196 N each to the right, four students pull with force 98 N each to the left, five students pull with force 62 N each to the left, three students pull with force 150 N each to the right, and one student pulls with force 250 N to the left. Assuming the positive direction to the right, express the net pull on the knot in terms of the unit vector. How big is the net pull on the knot? In what direction?
Physics
1 answer:
mojhsa [17]2 years ago
6 0

Answer:

Net pull = 110 N to the left

Explanation:

Group the different pulls according to the direction (right or left)

2 pull 196 N each to the right

4 pull 98 N each to the left

5 pull 62 N each to the left

3 pull 150 N each to the right

1 pull 250 N to the left

Since positive direction is to the right, the pulls to the left will have a minus (-)

Net Force= 2(196)+4(-98)+5(-62)+3(150)+1(-250) \\Net Force = -110

The resulting force is negative, meaning the direction is to the left

You might be interested in
What is the amount of displacement of a runner who runs exactly 2 laps around a 400 meter track?
max2010maxim [7]

At the end of the laps, the runner's displacement is zero.

8 0
2 years ago
Ride and average of 15mph for 30 miles, how long does it take?
dalvyx [7]

Answer:

2 hrs

Explanation:

time = distance ÷ speed

3 0
3 years ago
Endothermic reactions give off heat as they proceed. <br> a. True<br> b. False
Temka [501]
B. False
Endothermic reactions absorb heat.
5 0
3 years ago
usted / el partido de fútbol Usted va al partido de fútbol. Question 1 with 1 blankyo / la biblioteca Question 2 with 1 blanknos
34kurt

Answer:

1- Yo VOY A la biblioteca

2- Nosotros VAMOS A la piscina

3- Mis primas VAN AL gimnasio

4- Tú VAS de excursión

5- Ustedes VAN AL parque municipal

6- Alejandro VA AL museo de ciencias

Explanation:

Las preguntas refieren en su totalidad a la conjugación temporal del verbo "ir". Así, refiere a conjugar dicho verbo en tiempo presente simple, el cual se conjuga de la siguiente manera:

Yo voy, el va, tú vas, nosotros vamos, ellos van, ustedes van

Así, debe interpretarse la persona o personas que realizan la acción, para determinar así como se conjuga dicho verbo.

4 0
3 years ago
A 39-cm-long vertical spring has one end fixed on the floor. Placing a 2.2 kg physics textbook on the spring compresses it to a
Inessa05 [86]

Answer:

The spring constant is 215.6 N/m.

Explanation:

Given that,

Distance = 39 cm

Compresses length = 29 cm

Mass = 2.2 kg

We need to calculate the distance

Using formula of distance

x=l-l'

Put the value into the formula

x=39-29=10\ cm

We need to calculate the spring constant

Using formula of restoring force

F=kx

k=\dfrac{mg}{x}

Where, F = force

x = distance

Put the value into the formula

k=\dfrac{2.2\times9.8}{10\times10^{-2}}

k=215.6\ N/m

Hence, The spring constant is 215.6 N/m.

7 0
3 years ago
Other questions:
  • If your a member of the u.s. navy your organization is part of the department of what?
    15·1 answer
  • If the battery of your phone can provide 2 mA of current to your phone and holds a charge of 130 C, how long will it take a full
    13·1 answer
  • B. what does it mean to release a chemical?|
    12·1 answer
  • This is a measure of the quantity of matter.
    11·2 answers
  • A positively charged plastic ruler is brought close to a piece paper resting on the desk. The piece of paper was initially neutr
    9·1 answer
  • A centrifuge accelerates uniformly from rest to 15000 rpm in 330 s . Through how many revolutions did it turn in this time?
    8·1 answer
  • Which of the following parallel plate diagrams would have the greatest electric fields between them?
    6·1 answer
  • 1. When red light shines on a red rose, what color do you see? Do the leaves become
    11·2 answers
  • U= (-5,3) find the magnitude of u. please help me
    11·1 answer
  • C1=4F, C2=4F, C3=2F, C4=4F, C5= 9.2 F. Calculate the equivalent capacitance
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!