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
nalin [4]
3 years ago
10

Determine how potential and kinetic energy changes at each position of the pendulum as the ball swings from A to E. Position A:

Position B: Position C: Position D: Position E:
Physics
2 answers:
slavikrds [6]3 years ago
5 0
<h3><u>Answer;</u></h3>

Position A: Maximum potential  and minimum kinetic energy

Position B: losing potential and gaining kinetic  

Position C: Maximum kinetic  and minimum potential energy.

Position D: is losing kinetic and gaining potential  

Position E: Maximum potential and minimum kinetic energy.

<h3><u>Explanation;</u></h3>
  • Position A is a point of maximum potential energy and minimum kinetic energy since it is the highest point of the pendulum.
  • Position B, which is half way between A and C, the ball is losing potential energy and gaining kinetic energy. This occurs as the ball descends from the highest position to the lower position thus looses potential energy and gains kinetic energy.
  • Position C is the point of maximum kinetic energy and minimum potential energy. Because this is the lowest point of the pendulum and a point where the ball has maximum velocity.
  • At position D which is half way between C and E, the potential energy is increasing as the kinetic energy is decreasing. At this point the ball has half of its maximum potential energy.
  • At position E, he potential energy of the pendulum reaches its maximum value and is neither increasing nor decreasing at that point.
worty [1.4K]3 years ago
5 0

Answer: position A is all potential) position B) losing potential and gaining kinetic) position C) is all kinetic) position D) is losing kinetic and gaining potential) position E) is all potential.

Explanation: I just did the questions trust me these are right try them! good luck.

You might be interested in
A 50 kg runner runs up a flight of stairs. The runner starts out covering 3 steps every second. At the end the runner stops. Thi
nadezda [96]

To solve the problem it is necessary to take into account the concepts of kinematic equations of motion and the work done by a body.

In the case of work, we know that it is defined by,

W = F * d

Where,

F= Force

d = Distance

The distance in this case is a composition between number of steps and the height. Then,

d=h*N, for h as the height of each step and N number of steps.

On the other hand we have the speed changes, depending on the displacement and acceleration (omitting time)

V_f^2-V_i^2 = 2a\Delta X

Where,

V_f = Final velocity

V_i = Initial Velocity

a = Acceleration

\Delta X = Displacement

PART A) For the particular case of work we know then that,

W = F*d

W = m*g*(h*N)

W = 50*9.8*(0.3*30)

W = 4.41kJ

Therefore the Work to do that activity is 4.41kJ

PART B) To find the acceleration (from which we can later find the time) we start from the previously given equation,

V_f^2-V_i^2 = 2a\Delta X

Here,

V_i = \frac{0.3*3}{1} = 0.90m/s\rightarrow3 steps in one second

v_f = 0

Replacing,

V_f^2-V_i^2 = 2a\Delta X

0-0.9^2=2a(30*0.3)

Re-arrange for a,

a = -\frac{0.9^2}{2*30*0.3}

a = -45*10^{-3}m/s^2

At this point we can calculate the time, which is,

t = \frac{\Delta V}{a}

t = \frac{0-0.9}{-45*10^{-3}}

t = 20s

With time and work we can finally calculate the power

P = \frac{W}{t} = \frac{4.41}{20}

P = 0.2205kW

6 0
3 years ago
A monatomic ideal gas undergoes an adiabatic expansion to double its volume. the same final state can be reached by an isobaric
Vlada [557]
(2^(1-γ)-1)/(1-γ) where γ is the heat capacity ratio, Cp/Cv. See attached image for the working.

http://prntscr.com/htqqte
5 0
3 years ago
Climate change is causing the average annual temperature to increase. Birds that have adapted to temperatures in their environme
Luba_88 [7]
Are their any multiple choice questions? Also you said, "<span>Birds that have adapted to temperatures in their environment must find a way to adapt." It says they already adapted lol</span>
4 0
3 years ago
Read 2 more answers
A soccer player carries the ball for a distance of 40.0 m in the direction 42.0° west of south. find the westward component of t
Maksim231197 [3]

Actually what the problem meant about the westward component of the ball’s displacement is the horizontal component of the displacement. To help us better understand the problem, I attached a figure of the situation.

We can see from the figure that to solve for the value of the horizontal component, we have to make use of the sin function. That is:

sin θ = side opposite to the angle / hypotenuse of the triangle

sin 42 = x / 40 m

x = (40 m) sin 42

x = 26.77 m

 

Therefore the ball has a westward displacement of about 26.77 m

3 0
3 years ago
As a glacier melts, the volume V of the ice, measured in cubic kilometers, decreases at a rate modeled by the differential equat
DaniilM [7]

Answer:

the volume in terms of time t ⇒ \\V = e^{0.05t} + 399\\

Explanation:

Given that :

\frac{dv}{dt}= kv\\\\\int\limits \, \frac{dv}{v}=  \int\limits \, kdt\\In v = kt + C_1\\v = e^{kt} + C\\400 = e^{k*0} + C\\400 = 1 + C\\C = 400 -1\\C = 399

V = e^{kt} + 399

When v = 300 ;  \frac{dv}{dt}= - 15

then

\frac{dv}{dt}= kv\\\\-15 = 300*k\\\\k = \frac{-15}{300}\\\\\\k = \frac{-1}{20}\\\\k = -0.05

∴ \\V = e^{0.05t} + 399\\

Therefore, the volume in terms of time t ⇒ \\V = e^{0.05t} + 399\\

6 0
3 years ago
Other questions:
  • A tuning fork is struck and is vibrating at a single frequency. If a second tuning fork with the same frequency is placed near t
    8·2 answers
  • Earthquake information would most likely be shown on which type of map?
    9·1 answer
  • The spring of a spring gun has force constant k = 400 N/m and negligible mass. The spring is compressed 6.00 cm and a ball with
    11·1 answer
  • A student m1 = 71 kg runs towards his skateboard, which has a mass m2 = 2.8 kg and is d = 2.75 m ahead of him. He begins at rest
    10·1 answer
  • Here the file attached
    10·2 answers
  • Lithium and francium have similar properties because they
    5·1 answer
  • You have a working electrical parallel circuit with three light bulbs, then 1 bulb burns
    15·1 answer
  • Does bouncing or sticking produce more impulse?
    12·2 answers
  • describe the forces acting on a car as it movies along a level highway in still air at a constant speed
    7·1 answer
  • A car with a mass of 1000 kg accelerates from 0 to 90 km/h in 10 seconds. a) What is its acceleration? b) What is the net force
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!