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
agasfer [191]
3 years ago
9

9. A sailor pulls a boat along a dock using a rope at an angle of 60.0° with the

Physics
1 answer:
aleksklad [387]3 years ago
6 0

Answer: (1) 3.83x10^3 J

Explanation:

(1) Fx=(255N)cos60°

   dx=30.0m

   w=Fx dx =(255)(cos60°)(30.0m)

You might be interested in
A circle graph shows that one-fourth of the students in a particular school ride the bus every day. What is this equivalent meas
Aleonysh [2.5K]

Answer:

it's 1.57... radians and 90°

3 0
2 years ago
In the context of the loop and junction rules for electrical circuits, a junction is: Group of answer choices where a wire is co
o-na [289]

In the context of the loop and junction rules for electrical circuits, a junction is where three or more wires are joined.

Answer: Option 2

<u>Explanation: </u>

An electrical circuits consists of many points like branch, loop, junction, series, bridge, etc. So, loops are the ones where the output of one circuit will act as feedback of the same circuit. If two or more wires passes through a single point, then that point is termed as junction.

If two or three junction connect each other they are termed as branch. Like these several other parameters are there with different rules in the circuit system. For electrical circuits, junction and loop rules state that a junction is the point where more wires joined together.

4 0
3 years ago
What happens to the gravitational force between two masses when the distance between the masses is doubled?
vovangra [49]

Answer:

It decreases by a factor of 4

Explanation:

The gravitational force between two masses is given by

F=\frac{Gm_1 m_2}{r^2}

where

G is the gravitational constant

m1, m2 are the two masses

r is the separation between the two masses

In this problem, the distance between the masses is doubled, so

r' = 2r

Substituting into the equation, we see that the new force is

F'=\frac{Gm_1 m_2}{(2r)^2}=\frac{1}{4}\frac{Gm_1m_2}{r^2})\frac{F}{4}

So, the force decreases by a factor of 4.

6 0
3 years ago
A steady 45 N horizontal force is applied to a 15 kg object a table. The object slides against a friction force of 30 N. Calcula
lisov135 [29]

The net force on an object subject to friction is equal to the sum of the applied force and the frictional force.

Mathematically,

F_{N} = ma = F_{applied} - f_{fr}

Here, m is mass of object and a is its acceleration. We take frictional force negative because it opposes the motion of object.

Given, m=15\ kg , F_{applied} =45\ N and f_{fr} = 30\ N

Substituting these values in above formula, we get

15\ kg\times a = 45\ N -30\ N=15\ N \\\\a=\frac{15\ N}{15\ kg} =1\ m/s^2.

Thus, the acceleration of an object is 1\ m/s^2.


6 0
3 years ago
A red flag at the ocean signifies that swimmers are not allow in the water and that the the conditions are too ? True or False
Leto [7]

Answer:

true

Explanation:

3 0
3 years ago
Read 2 more answers
Other questions:
  • Calculate the amount of energy produced in a nuclear reaction in which the mass defect is 0.187456 amu.
    13·2 answers
  • How many complete revolutions are needed to draw the angle 725°?
    13·2 answers
  • An object has a mass of 5 kg. What force is needed to accelerate it at 6 m/s2? (Formula: F=ma)
    6·2 answers
  • In the process of changing a flat tire, a motorist uses ahydraulic jack. She begins by applying a force of 45 N to the inputpist
    12·1 answer
  • There are two objects with initial charge. Object A has 3 positive and 3 negative charges. Object B has 5 positive and 3 negativ
    7·1 answer
  • Which of these is NOT a possible type of energy transformation?
    5·1 answer
  • Select the correct answer.
    12·1 answer
  • La masa de un camión es de
    11·1 answer
  • 2 Ten identical lengths of wire are laid closely side-by-
    9·1 answer
  • 2. Neutrons have a ____<br> charge.<br> a. positive<br> b. negative<br> c. neutral
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!