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
rewona [7]
3 years ago
10

Hooke's law. The distance d when a spring is stretched by a hanging objective varies directly as the weight w of the object. If

the distance is 38 cm when the weight is 3 kg, what is the distance when the weight is 7 kg? ...?
Physics
1 answer:
Fofino [41]3 years ago
7 0
<span>Hooke's law is F=-kx, which means the elastic force contained by the spring is a product of the distance it stretches and its spring constant, but the direction of the force is opposite that of the displacement. We calculate as follows:

</span><span>(3 kg)(9.8 m/s^2) = -k(-0.38 m)
</span>k =<span> 77.4

</span><span>Then use k to find the new displacement, again using Hooke's law:
(7 kg)(9.8 m/s^2) = -(77.4)x
x = -0.89 m</span>
You might be interested in
A proton having an initial velvocity of 20.0i Mm/s enters a uniform magnetic field of magnitude 0.300 T with a direction perpend
nikitadnepr [17]

The radius of curvature of the proton's path while in the field is 66.67  × 10^{-2}.

b) Let R = radius curvature of protons path. Then,

relation b/w B, R, and v is: -

B = mv/eR\\R=mv/eB

R=\frac{1.6*10^{-27} * 20*10^{6}}{1.6*10^{-19}*0.3 }

R =66.67× 10^{-2}

Hence, the radius of curvature of the proton's path while in the field is 66.67 × 10^{-2}.

<h3>What do you mean by Magnetic field?</h3>

The magnetic influence on moving electric charges, electric currents and magnetic materials is described by a magnetic field, which is a vector field. A force perpendicular to the charge's own velocity and the magnetic field acts on it when the charge is travelling through a magnetic field.  The magnetic field of a permanent magnet pulls on ferromagnetic substances like iron and attracts or repels other magnets. A magnetic field that varies with location will also exert a force on a variety of non-magnetic materials by changing the velocity of those particles' outer electrons. Electric currents, like those utilized in electromagnets, and electric fields that change in time produce magnetic fields that surround magnetized things.

To know more about Magnetic Field visit:

brainly.com/question/14848188

#SPJ4

5 0
1 year ago
5. What structure did Friedrich Kekule discover that allowed carbon atoms can bond
musickatia [10]
Benzene was a ring of six carbon atoms! This was the structure that made him well known around the world
4 0
2 years ago
In a physics lab, a 0.500-kg cart (Cart A) moving with a speed of 129 cm/s encounters a magnetic collision with a 1.50-kg cart (
omeli [17]

Answer:

58 cm/s

Explanation:

0.5×129=0.5×(-45)+1.5×V

V=58

7 0
2 years ago
Why are special techniques and extinguishing agents are required to fight combustible metals fires?
d1i1m1o1n [39]
Cucucicicicivigovogovphphpbpb
7 0
3 years ago
A sound wave with a frequency of 400 Hz is moving through a solid object. If the wavelength of the sound wave is 8 m, what is th
Paraphin [41]

Answer:

v = 3200 m/s

Explanation:

As we know that the frequency of the sound wave is given as

f = 400 Hz

wavelength of the sound wave is given as

\lambda = 8 m

so now we have

speed = wavelength \times frequency

so we will have

v = (8m) \times (400 Hz)

v = 3200 m/s

4 0
3 years ago
Other questions:
  • What would it be like to walk on Venus?
    6·1 answer
  • What wires allow electrons to flow the easiest?
    15·1 answer
  • What terms describes an atom's tendency to hold onto electrons
    5·2 answers
  • Work can _____ energy between objects and can cause a change in the form of energy.
    7·1 answer
  • A toy rocket, mass 0.8 kg, blasts up at a 45 degrees from ground level with a kinetic energy of 41 J. To what maximum vertical h
    7·1 answer
  • Venus has a radius of 6.05 x 106 m,
    5·1 answer
  • Newtons prism experiments showed that white sunlight is made up of
    9·2 answers
  • A billiard ball is dropped from a height of 64 feet. Use the position function s(t) = –16???? 2 + ????0???? + ????0 to answer th
    6·1 answer
  • When measuring speed of sound in air, speed of light = 4f(length of column of air + 0.3 * diameter of tube).
    5·1 answer
  • Build a second circuit with a battery and a light bulb but this time add a switch. Your circuit might look something like the on
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!