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
Tcecarenko [31]
3 years ago
11

A mason stretches a string between two points 70 ft apart on the same level with a tension of 20 lb at each end. If the string w

eighs 0.18 lb, determine the sag h at the middle of the string.
Physics
1 answer:
sergejj [24]3 years ago
4 0

Answer:

Explanation:

Let tension be T in each string . Let angle with horizontal be θ in the middle

The sum of vertical components of tension of two string will balance the weight

2Tsinθ = mg

2 x 20 sinθ = .18

sinθ = .18 / 40 = .0045

θ = .25783 degree

If sag be y

y / 70 = tan .25783

y = 70 x tan.25783

= .3150 m

= 31.50 cm .

You might be interested in
Once an object enters orbit, what keeps the object moving sideways?
yaroslaw [1]

It's the natural tendency of things to keep going unless there's something trying to stop them.

It's usually called "inertia".

Don't get the idea from all of this that things stop unless there's something to keep them going.  The truth is exactly the opposite:  Things keep going unless there's something to make them stop.

7 0
3 years ago
Read 2 more answers
An upward moving object must be experiencing (or at least usually does experience) an upward force.
gayaneshka [121]
Gravity pulls objects down to the earth
8 0
2 years ago
Will upvote!!!!
juin [17]
D. potential energy, because there is a bunch of water pent up, essentially stationary, waiting to roll down the steep mountain from the peak, so to say. if the dam were to be removed it would become kinetic.
4 0
3 years ago
Read 2 more answers
Calculate the work done by an applied force of 76.0 N on a crate for the following. (Include the sign of the value in your answe
telo118 [61]

Answer:

a) 400.4Joules

b) 262.69Joules

Explanation:

Work is said to be done if the force applied to an object cause the object to move through a distance

Workdone = Force × Distance

Given

Force = 76N

Distance= 5.2m

Work done = 77 × 5.2

Work done = 400.4Joules

b) If the force is exerted at an angle of 41°

Work done = Fdsin theta

Work done = 77(5.2)sin41

Work done = 400.4sin41

Work done = 262.69Joules

6 0
2 years ago
Use ideas of electromagnetic induction to explain how the input voltage is transformed into an output voltage
devlian [24]

With the help of a transformer  input voltage is transformed into an output voltage

​

<h3>What is induced voltage?</h3>

Electromagnetic induction is what causes the induced voltage. Electromagnetic induction is the process of generating emf (induced voltage) by subjecting a conductor to a magnetic field.

In this case, a magnet is pushed in and out of a wire coil attached to a high-resistance voltmeter.

Typically, a transformer's primary winding is attached to the input voltage source and changes electrical power into a magnetic field.

The secondary winding's role is to turn this alternating magnetic field into electricity, generating the necessary output voltage.

Hence with the help of a transformer input voltage is transformed into an output voltage.

​

To learn more about the induced voltage refer to the link;

brainly.com/question/19482771

#SPJ1

5 0
1 year ago
Other questions:
  • The largest planet in our solar system is
    7·2 answers
  • A small segment of wire contains 10 nC of charge. The segment is shrunk to one-third of its original length. A proton is very fa
    10·1 answer
  • 7.
    10·2 answers
  • What is the maximum distance that a 60.-watt motor may vertically lift a 90.-newton?weight in 7.5 seconds?a. 2.3mb. 5.0mc. 140md
    5·1 answer
  • What force will a proton experience in a uniform electric field whose strength is 2.00 x 10^5 Newtons per Coulomb? *
    12·1 answer
  • Jose has a mass of 70 kg, what is his weight​
    14·1 answer
  • How are cheek and skin cells different?
    7·1 answer
  • In a pneumatic lift, compressed air exerts a force on a piston with a radius of 10.00 cm. This pressure is transmitted to a seco
    12·1 answer
  • The car's initial speed was 32m / s and it takes 99 seconds for the car to come to a full stop after the driver applies the brak
    5·1 answer
  • Where is a good place to check your pulse?
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!