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
Compare the two numbers using <, >, =
Effectus [21]
Vas happenin!!

1. =
2. >
3. <
4. <
5. <
6. >

Hope this helps *smiles*

3 0
2 years ago
Write a complete scientific explanation to account for why the ball that was moving faster caused more flour to spread out.​
Harlamova29_29 [7]

Answer:

It is due to the large impulse is imparted on the flour.

Explanation:

A ball is moving faster.

When a ball is moving faster strikes to the flour, the change in momentum is large and thus the impulse imparted on the flour is large.

Impulse = change in momentum

So, as the flour experiences large impulse and large momentum so that the flour spreads out.

If the change in momentum is large so the flour spreads out is more.  

8 0
3 years ago
Which type of wave does the illustration depict?
Naddika [18.5K]
A transverse wave. A wave is a disturbance that transmits energy from one place to another by the particles of the medium.
4 0
2 years ago
Read 2 more answers
All Physicsts over here plz help in these questions!!!!!!!!!
mrs_skeptik [129]
Hello!

First one we can use that PE=mgh so we have

4.37*10^5J/(9.12*10^3kg*9.80m/s^2)= 4.89m

Second one we can use Newton’s Second Law
F=ma and in this case F=mg so we have

g= 3.28*10^-2N/6*10^-3kg = 5.47m/s^2

Hope this helps. Any questions please ask. Thank you.
6 0
3 years ago
Read 2 more answers
What do you know about nuclear energy?​
aev [14]

Answer:

Nuclear energy comes from splitting atoms in a reactor to heat water into steam, turn a turbine and generate electricity. Ninety-three nuclear reactors in 28 states generate nearly 20 percent of the nation's electricity, all without carbon emissions because reactors use uranium, not fossil fuels.

<h2>please follow me</h2>
6 0
2 years ago
Other questions:
  • The specific heat of copper is 0.39 j/g*degrees celcius how much heat is needed to raise the temperature of 1000.0 g of copper f
    10·1 answer
  • What must you know in order to determine the gravitational force between two objects?
    15·1 answer
  • The removal of an embedded gas from a solid object, as happens when formaldehyde in new carpets and furniture is released into t
    6·1 answer
  • Need help on this thanks
    7·1 answer
  • I need someone to give me 2 answers,
    6·1 answer
  • Describe and explain the motion of a small ball floating on a pond when waves travel across the pond
    8·1 answer
  • A swift blow with the hand can break a pine board. As the hand hits the board, the kinetic energy of the hand is transformed int
    11·1 answer
  • A piece of wood 400N in weight and 50cm X 30cm X 20cm in size lies on 50cm X 20cm face. Calculate the pressure exerted by it.
    12·1 answer
  • Help now WILL MARK BRAINLEST
    11·1 answer
  • You and a partner sit on the floor and stretch out a coiled spring to a length of 7.2 meters. You shake the coil so you
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!