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
borishaifa [10]
3 years ago
6

Which is an example of potential en

Physics
2 answers:
SIZIF [17.4K]3 years ago
8 0

a yoyo in someones hand is an example of potential energy

bogdanovich [222]3 years ago
7 0
A yo-yo in someone’s hand
You might be interested in
Review:
Tresset [83]

Answer:

1. 1. A quantity is completely described by magnitude alone. A quantity Is completely described by a magnitude with a direction.

[a]. scalar, vector

b. vector, scalar

2.2. Speed is a velocity is a quantity and quantity.

a. scalar, vector

[b]. vector, scalar

3 0
2 years ago
Starting from rest, a 6.79 kg block slides 2.82 m down a rough 20.7 ◦ incline. The coefficient of kinetic friction between the b
Veronika [31]

Answer:

23.52092 J

Explanation:

m = Mass of block = 6.79 kg

s = Sliding distance = 2.82 m

\theta = Angle of slide = 20.7°

\mu = Coefficient of kinetic friction = 0.425

g = Acceleration due to gravity = 9.8 m/s²

Work done by the force of gravity is given by

W=mgsin\theta\\\Rightarrow W=6.79\times 9.8\times sin20.7\\\Rightarrow W=23.52092\ J

The work done by the force of gravity is 23.52092 J

8 0
3 years ago
3. A certain wire, 3 m long, stretches by 1.2 mm when under tension of 200 N. By how much does
nikitadnepr [17]

Answer:

The extension of the second wire is   e_2 = 0.0024 \  m =  2.4 mm

Explanation:

From the question we are told that

    The length of the wire is L  = 3 \ m

     The elongation of the wire is  e =  1.2mm =  \frac{1.2}{1000} =  0.0012 m

        The tension is F  =  200 \ N

       The length of the second wire is  L_2   =  6 \ m

     

Generally the Young's modulus(Y) of this material is  

        Y  = \frac{stress}{strain }

Where stress =  \frac{F}{A}

    Where A is the area which is evaluated as  

           A = \pi r^2

  and   strain = \frac{extention}{length} =  \frac{e}{L}

   So

        Y  = \frac{\frac{F}{\pi r^2 } }{ \frac{e}{L}  }

Since the wire are of the same material Young's modulus(Y)  is constant

So we have  

              \frac{F * L }{r^2 e}  =  \pi * Y = constant

              F * L   =  constant   * r^2 e

Now the ration between the first and the second wire is

         \frac{F_1}{F_2}  * \frac{L_1}{L_2} =  \frac{r*2_1}{r^2}  *  \frac{e_1}{e_2}

Since tension , radius are constant

   We have

           \frac{L_1}{L_2} =   \frac{e_1}{e_2}

substituting values

          \frac{3}{6} =   \frac{0.0012}{e_2}

          0.5 e_2 =  0.0012

         e_2 = \frac{ 0.0012  }{0.5}

          e_2 = 0.0024 \  m =  2.4 mm

3 0
3 years ago
Is it true that at freezing point particle are vibrating so fast they break free?
kondor19780726 [428]
It is false. The effect of freezing is almost the exact opposite
4 0
3 years ago
Read 2 more answers
What is the current hypothesis on how the earths moon formed
Gwar [14]
The earth and moon were created By a collision between two planetary objects Each five time the size of mars. Is the newest hypothesis. 
4 0
3 years ago
Read 2 more answers
Other questions:
  • A coaxial cable consists of alternating coaxial cylinders of conducting and insulating material. Coaxial cabling is the primary
    12·1 answer
  • For a given velocity of projection in a projectile motion, the maximum horizontal distance is possible only at ө = 45°. Substant
    6·1 answer
  • A skier has an acceleration of 2.5 m/s2. How long does it take her to come to a complete stop from a speed of 18 m/s? A. 3.4 s B
    12·1 answer
  • Why does an empty plate not heat up in the microwave?
    8·1 answer
  • Two groups of scientists got different results while studying about the evolution of the universe. Which of these statements bes
    5·2 answers
  • Color is the visual perception of the
    13·2 answers
  • What is the percentage increase IN kinetic energy(K.E) ,If the momentum(p) of a moving body is increase by 10%?And How? (If K.E=
    15·1 answer
  • 8.<br> What’s the influence of bias in<br> forensic science
    15·1 answer
  • A sound wave (a periodic longitudinal wave) from a loudspeaker travels from air into water. The frequency of the wave does not c
    15·1 answer
  • A car starts from rest and after 20 seconds it's velocity becomes 108km find the acceleration of the car
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!