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
lapo4ka [179]
2 years ago
14

Pablo preto lift a barbell. During which stage of the lift does Pablo do work on the barbell

Physics
2 answers:
Arlecino [84]2 years ago
6 0
While he is lifting the dumbell as the definition of work done = moving a mass through a distance = F x d
____ [38]2 years ago
3 0

this is the original question:

Pablo prepares to lift a barbell. During which stage of the lift does Pablo do work on the barbell?

when he holds the barbell up above his head

when he applies force to the barbell but has not moved it

when he lifts the barbell from the floor to his chest

when he lets go of the barbell and allows it fall to the ground

that is the answer-> when he lifts the barbell from the floor to his chest

hope this helps!

You might be interested in
An undiscovered planet, many lightyears from Earth, has one moon in a periodic orbit. This moon takes 2010 × 103 seconds (about
vazorg [7]

Answer:

Radial acceleration of moon is a_{r} = 2.246\times 10^{-3}\frac{m}{s^{2} }

Explanation:

Given :

Time period T = 1.987 \times 10^{6} sec

Distance from center of moon to planet r = 225 \times 10^{6} m

From the equation of radial acceleration,

  a_{r} = r\omega ^{2}

Where \omega = 2\pi f = \frac{2\pi }{T}

So   \omega = 3.16 \times 10^{-6} \frac{rad}{s}

Now moon's radial acceleration,

 a_{r} = 225 \times 10^{6} \times (3.16 \times 10^{-6} )^{2}

 a_{r} = 2246.76 \times 10^{-6}

 a_{r} = 2.246\times 10^{-3} \frac{m}{s^{2} }

7 0
3 years ago
What is the most widely accepted model of how the solar system formed? Explain how the solar system formed under this model
Degger [83]
Heliocentric model. It is the model where the sun is it the middle. and the planets are orbiting the sun like this (in order from shorter to longer). Mercury,Venus,Earth,Mars,Jupiter,Saturn,Uranus,and Neptune.
3 0
3 years ago
What temperature is Sirius B?
Dmitry [639]
The answer would be 9,940 K is the temperature of Sirius B.
5 0
2 years ago
The Atomic Mass of an element is
dedylja [7]

Answer:

C) A ratio based on the mass of a carbon-12 atom

Explanation:

For each element, there is a characteristic number of protons, this number represent a type of atom and its called the atomic number

On the other hand we have the number of neutrons, and for one element which difers only on the number of neutrons, we have different isotopes from one element.

Together, protons and neutrons define the mass number

One property linked with the mass number, is the atomic mass, which is formerly expressed as "uma" (atomic mass unit)

By definition, one atom of carbon-12 (with 6 neutrons) has an atomic mass of 12 umas

6 0
3 years ago
Read 2 more answers
1Which statement correctly applies to a car that changes its velocity over a period of time?
slavikrds [6]

Answer:b a nonzero net force is acting on it

Explanation:

5 0
2 years ago
Read 2 more answers
Other questions:
  • A 2.0-kilogram mass is located 3.0 meters above
    14·2 answers
  • Which of the following is an idea that robert hutchings goddard introduced in his “further developments” to his research "a meth
    10·1 answer
  • Which statement is true according to Newton's first law of motion?
    15·2 answers
  • An aircraft performs a maneuver called an "aileron roll." During this maneuver, the plane turns like a screw as it maintains a s
    10·1 answer
  • What is one limitation of using the jawbreaker as a model for Earth's layers? A. The layers are all made out of the same materia
    5·2 answers
  • Electric field lines point from positive charges to negative charges. A. True B. False​
    15·1 answer
  • At 12 seconds what is the direction of the velocity of the rocket what is the direction of the acceleration rocket
    15·1 answer
  • Name the four fundamental fores at work inside an atom. Tell what each one does.​
    9·1 answer
  • A car drives for 50 seconds and travels 2 meters what is its velocity
    9·2 answers
  • How does the construction of dams positively affect natural resources?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!