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
algol [13]
3 years ago
8

a 20N mass is supported by two ropes. what is the tension in each rope? how woould i work this problem if i know the two angles

and thats the only info i know.
Physics
1 answer:
TiliK225 [7]3 years ago
5 0

Before we could discuss this in any specific detail, I think we would have to
know the angles.  A generic discussion without actual numbers for the angles
would be just plain too confusing.

The general approach is that the vertical components of both tensions
add up to 20N, and the horizontal components are equal but in opposite
directions.  That's the only way that the mass is hanging motionless.

You have to find the horizontal and vertical components of the tensions
by using the angles and maybe the lengths of the ropes.


You might be interested in
A 1.0-cm-tall object is 13 cm in front of a converging lens that has a 40 cm focal length.
kicyunya [14]

A) Image position: -19.3 cm

B) Image height: 1.5 cm, upright

Explanation:

A)

In order to calculate the image position, we can use the lens equation:

\frac{1}{p}+\frac{1}{q}=\frac{1}{f}

where

p is the distance of the object from the lens

q is the distance of the image from the lens

f is the focal length

In this problem, we have:

p = 13 cm (object distance)

f = 40 cm (focal length, positive for a converging lens)

So the image distance is

\frac{1}{q}=\frac{1}{f}-\frac{1}{p}=\frac{1}{40}-\frac{1}{13}=-0.0519\\q=\frac{1}{-0.0519}=-19.3 cm

The negative sign means that the image is virtual.

B)

In order to calculate the image height, we use the magnification equation:

\frac{y'}{y}=-\frac{q}{p}

where

y' is the image height

y is the object height

In this problem, we have:

y = 1.0 cm (object height)

p = 13 cm

q = -19.3 cm

Therefore, the image heigth is

y'=-\frac{qy}{p}=-\frac{(-19.3)(1.0)}{13}=1.5 cm

And the positive sign means the image is upright.

6 0
3 years ago
What scientific principle causes the different layers of the earth
Vedmedyk [2.9K]

Answer: The stratification of earth into its geologic layers was brought about by th e formation of the earth iron core.

Explanation:

5 0
3 years ago
In a fast-pitch softball game the pitcher is impressive to watch, as she delivers a pitch by rapidly whirling her arm around so
svetlana [45]

Answer:

(a). The magnitude of the total acceleration of the ball is 239.97 m/s².

(b). The angle of the total acceleration relative to the radial direction is 11.0°

Explanation:

Given that,

Radius of the circle = 0.681 m

Angular acceleration = 67.7 rad/s²

Angular speed =18.6 rad/s

We need to calculate the centripetal acceleration of the ball

Using formula of centripetal acceleration

a_{c}=\omega^2\times r

Put the value into the formula

a_{c}=(18.6)^2\times0.681

a_{c}=235.5\ m/s^2

We need to calculate the tangential acceleration of the ball

Using formula of tangential acceleration

a_{t}=r\alpha

Put the value into the formula

a_{t}=0.681\times67.7

a_{t}=46.104\ m/s^2

(a). We need to calculate the magnitude of the total acceleration of the ball

Using formula of total acceleration

a=\sqrt{a_{c}^2+a_{t}^2}

Put the value into the formula

a=\sqrt{(235.5)^2+(46.104)^2}

a=239.97\ m/s^2

(b). We need to calculate the angle of the total acceleration relative to the radial direction

Using formula of the direction

\theat=\tan^{-1}(\dfrac{a_{t}}{a_{c}})

Put the value into the formula

\theta=\tan^{-1}(\dfrac{46.104}{235.5})

\theta=11.0^{\circ}

Hence, (a). The magnitude of the total acceleration of the ball is 239.97 m/s².

(b). The angle of the total acceleration relative to the radial direction is 11.0°

5 0
3 years ago
Kyle has the mass of 54 kg and is jogging at a velocity of m/s. What is Kyle’s kinetic energy
inysia [295]

m = mass = 54 kg

v = velocity = 3 m/s

KE =  (1/2)*m*v^2

KE =  (1/2) * 54 * (3)^2

KE = 243 J

Hope this helps!



3 0
3 years ago
Read 2 more answers
A switch and a fuse should be connected with a live wire in an electric circuit​
kykrilka [37]

Answer is A switch or a fuse in an electrical circuit is always connected to the live wire so that the socket or appliance is not live when switched off.

i hope it is helpful

6 0
3 years ago
Other questions:
  • Which relationship between sample size and sampling error is correct? Question 36 options:
    15·1 answer
  • A bungee cord can stretch, but it is never compressed. When thedistance between the two ends of the cord is less than its unstre
    10·1 answer
  • Pure water has a pH of 7. Pure water _______. A. Is a neutral substance B. Could be either an acid or a base C. Is a base D. Is
    13·2 answers
  • Describe your experience with the largest earthquake you have left
    11·1 answer
  • Three forces act on a flange as shown below. Determine the magnitude of the unknown force F (in lb) such that the net force acti
    11·1 answer
  • What kind of data does doppler radio provide
    15·1 answer
  • Calculate the height from from which a body is released from rest if its velocity just before hitting the ground is30m\s
    13·1 answer
  • A plane starting at rest at one end of a runway undergoes a uniform acceleration of 4.8 m/s
    15·1 answer
  • When light traveling in straight lines passes through an object that is curved like a lens, the light is ________ at different a
    11·1 answer
  • Fluorescence occurs when an object absorbs ____________________ and immediately releases the energy as visible light.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!