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
aleksandr82 [10.1K]
3 years ago
8

Which one of the following statements concerning the elastic potential energy of a ball attached to a spring is false when the b

all is moving in simple harmonic motion?
a) The elastic potential energy is at its minimum when the spring is in its equilibrium position.

b) The elastic potential energy is smaller when the ball is at xthan when it is at +x.

c) The elastic potential energy can be expressed in units of watts.

d) The elastic potential energy is at its maximum when the velocity of the ball is a maximum.

e) The elastic potential energy is at its minimum when the acceleration of the ball is a maximum.
Engineering
1 answer:
umka21 [38]3 years ago
8 0

Answer:

d) The elastic potential energy is at its maximum when the velocity of the ball is a maximum.

Explanation:

The total energy in a simple harmonic motion is the sum of its kinetic and potential energy.

Option D is false because when the velocity of the ball is at its maximum, the kinetic energy is maximum, and when the kinetic energy is at maximum, the elastic potential energy will be at minimum.

You might be interested in
Consider a Carnot heat pump cycle executed in a steady-flow system in the saturated mixture region using R-134a flowing at a rat
attashe74 [19]

Answer:

7.15

Explanation:

Firstly, the COP of such heat pump must be measured that is,

              COP_{HP}=\frac{T_H}{T_H-T_L}

Therefore, the temperature relationship, T_H=1.15\;T_L

Then, we should apply the values in the COP.

                           =\frac{1.15\;T_L}{1.15-1}

                           =7.67

The number of heat rejected by the heat pump must then be calculated.

                   Q_H=COP_{HP}\times W_{nst}

                          =7.67\times5=38.35

We must then calculate the refrigerant mass flow rate.

                   m=0.264\;kg/s

                   q_H=\frac{Q_H}{m}

                         =\frac{38.35}{0.264}=145.27

The h_g value is 145.27 and therefore the hot reservoir temperature is 64° C.

The pressure at 64 ° C is thus 1849.36 kPa by interpolation.

And, the lowest reservoir temperature must be calculated.

                   T_L=\frac{T_H}{1.15}

                        =\frac{64+273}{1.15}=293.04

                        =19.89\°C

the lowest reservoir temperature = 258.703  kpa                    

So, the pressure ratio should be = 7.15

8 0
3 years ago
A power of 100 kW (105 W) is delivered to the other side of a city by a pair of power lines, between which the voltage is 12,000
OLga [1]

Answer:

I = 8.3 Amp

potential drop = 83 V

Explanation:

Power = 100 KW

V = 12,000 V

R = 10 ohms

a)

Calculate current I in each wire:

P = I*V

I = P / V

I = 100 / 12 = 8.333 A

b)

Calculate potential drop in each wire:

V = I*R

V = (8.3) * (10)

V = 83 V

4 0
3 years ago
A slogan promoting STEM
Dominik [7]

Answer:

science technology engineering mathematics

Explanation:

4 0
3 years ago
Mong m.n giúp mình vs ạ
Ivenika [448]

Answer:

see vous se to pe a he ko off a nack u

4 0
2 years ago
Suppose that all the dislocations in 3000 mm3 of crystal were somehow removed and linked end to end. Given 1 m =0.0006214 mile,
zalisa [80]

Answer:

please let me know the answer to this because I need to know as well. thanks

6 0
3 years ago
Other questions:
  • Liquid flows with a free surface around a bend. The liquid is inviscid and incompressible, and the flow is steady and irrotation
    12·1 answer
  • Psychologist who uses behavioral approach to therapy would probably try which of the following
    13·2 answers
  • The water in an 8-m-diameter, 3-m-high above-ground swimming pool is to be emptied by unplugging a 3-cm-diameter, 25-m-long hori
    9·1 answer
  • A 5-mm-thick stainless steel strip (k = 21 W/m•K, rho = 8000 kg/m3, and cp = 570 J/kg•K) is being heat treated as it moves throu
    6·1 answer
  • A force measuring instrument comes with a certificate of calibration that identifies two instrument errors and assigns each an u
    12·1 answer
  • In plumbing what is a video snake used for
    10·2 answers
  • If a tapered roller bearing is adjusted to loose, the bearing will bind and overheat.
    11·1 answer
  • What financial arguments could you use to justify your proposed
    14·1 answer
  • Technician A says that a fully charged battery is less likely to freeze than a discharged battery. Technician B says that the st
    8·1 answer
  • Dampness or moisture introduces ____ into the weld, which causes cracking when some metals are welded.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!