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
meriva
3 years ago
14

A spring of force constant 285.0 N/m and unstretched length 0.230 m is stretched by two forces, pulling in opposite directions a

t opposite ends of the spring, that increase to 15.0 N.How long will the spring now be, and how much work was required to stretch it that distance?
Physics
1 answer:
Kaylis [27]3 years ago
8 0

Answer: W = 0.3853 J, e = 0.052 m

Explanation: Given that,

K =285.0N/M , L = 0.230m , F = 15N , e = ?

F = Ke

15 = 285 × e

e = 15÷ 285

e =0.052 m

e + L = 0.052 + 0.230

= 0.282m ( spring new length )

Work needed to stretch the spring

W = 1/2ke2

W = 1/2 × 285 x 0.052 × 0.052

W = 0.3853 J

You might be interested in
if ur riding a bike uphill do you want the output force to be greater than the input force or does the output force have to be l
andrey2020 [161]

Answer: you want your input force harder

Explanation:

8 0
3 years ago
Suppose that a comet that was seen in 563 A.D. by Chinese astronomers was spotted again in year 1951. Assume the time between ob
Mars2501 [29]

Answer:

a=2.77*10^{13}m

R_a=5.49*10^{13}m

Explanation:

The period of the comet is the time it takes to do a complete orbit:

T=1951-(-563)=2514 years

writen in seconds:

2514years*\frac{3,154*10^7s}{1year}=7.93 *10^{10}s

Since the eccentricity is greater than 0 but lower than 1 you can know that the trajectory is an ellipse.

Therefore, if the mass of the sun is aprox. 1.99e30 kg, and you assume it to be much larger than the mass of the comet, you can use Kepler's law of periods to calculate the semimajor axis:

T^2=\frac{4\pi^2}{Gm_{sun}}a^3\\ a=\sqrt[3]{\frac{Gm_{sun}T^2}{4\pi^2} } \\a=1.50*10^{6}m

Then, using the law of orbits, you can calculate the greatest distance from the sun, which is called aphelion:

R_a=a(1+e)\\R_a=2.77*10^{13}(1.986)\\R_a=5.49*10^{13}m

8 0
3 years ago
Scientists estimate the age of the universe to be (1 point)
Nesterboy [21]

12-15 billion years i think

4 0
3 years ago
Which of the following is a measure of the total energy of a system?
11111nata11111 [884]
The answer is enthalphy

Enthalphy especially used in thermodynamic system. It itncludes the internal energy which required to create the system and the ammount of energy required to establish its volume and pressure

Real life products of enthalphy applcation are refrigerator and compressor

Hope this help you out
6 0
3 years ago
A 500 N weight is hung at the middle of a rope attached to two buildings at the same level. If the breaks in the tension exceed
dedylja [7]

Answer:

The correct choice is 8o.

Explanation:

The given weight is hanging at the mid point of the rope and the buildings are at the same level, Obtain the given equation by equating the vertical components of force,

2Tsin(φ)=W

where φ is the angle made by rope with the horizontal.

Given T=1800 N and W=500 N, the value of φ is calculated as follows,

2*1800*sin(φ)=500

sin(φ)=0.1388

φ=7.90

φ≈8o

Check out similar questions.

brainly.com/question/13735944

#SPJ10

6 0
2 years ago
Other questions:
  • The distance between two charges a and b is r, and the force between them is F. What is the force between them if the distancbet
    9·1 answer
  • Please help .. there could be more than one answer to this question.
    13·1 answer
  • If an all electric house uses 2400 kWh in a month, what will the amount of the bill for electricity be at a rate of 9.5 cents pe
    11·1 answer
  • The electric potential, when measured at a point equidistant from two particles that have charges equal in magnitude but of oppo
    6·1 answer
  • Which category best describes this group of shapes? rhombuses rectangles parallelograms squares II​
    14·1 answer
  • The combination of an applied force and a friction force produces a constant torque of 36.0 N⋅m on a wheel rotating on a fixed a
    11·1 answer
  • Which state has the most fixed shape?<br> O A. Gas<br> O B. Solid<br> O C. Liquid<br> O D. Plasma
    12·1 answer
  • Why does a third class lever cannot magnify force?​
    12·1 answer
  • Marvin lifts a box over his head. The work done on the box is- -Negative work -No work -Positive work
    7·1 answer
  • In order for an object to accelerate (blank) must be applied.
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!