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
leva [86]
3 years ago
7

What is an essential characteristic of an object in equilibrium?

Physics
1 answer:
7nadin3 [17]3 years ago
3 0

Answer:

Zero Acceleration.

Explanation:

If an object is at equilibrium, then the forces are balanced. Balanced is the key word that is used to describe equilibrium situations. Thus, the net force is zero and the acceleration is 0 m/s/s. Objects at equilibrium must have an acceleration of 0 m/s/s.

You might be interested in
magine an astronaut on an extrasolar planet, standing on a sheer cliff 50.0 m high. She is so happy to be on a different planet,
Mama L [17]

Answer:

\Delta t=(\frac{20}{g'}+\sqrt{\frac{400}{g'^2}+\frac{100}{g'}  }  )-(\frac{20}{g}+\sqrt{\frac{400}{g^2}+\frac{100}{g}  }  )

Explanation:

Given:

height above which the rock is thrown up, \Delta h=50\ m

initial velocity of projection, u=20\ m.s^{-1}

let the gravity on the other planet be g'

The time taken by the rock to reach the top height on the exoplanet:

v=u+g'.t'

where:

v= final velocity at the top height = 0 m.s^{-1}

0=20-g'.t' (-ve sign to indicate that acceleration acts opposite to the velocity)

t'=\frac{20}{g'}\ s

The time taken by the rock to reach the top height on the earth:

v=u+g.t

0=20-g.t

t=\frac{20}{g} \ s

Height reached by the rock above the point of throwing on the exoplanet:

v^2=u^2+2g'.h'

where:

v= final velocity at the top height = 0 m.s^{-1}

0^2=20^2-2\times g'.h'

h'=\frac{200}{g'}\ m

Height reached by the rock above the point of throwing on the earth:

v^2=u^2+2g.h

0^2=20^2-2g.h

h=\frac{200}{g}\ m

The time taken by the rock to fall from the highest point to the ground on the exoplanet:

(50+h')=u.t_f'+\frac{1}{2} g'.t_f'^2 (during falling it falls below the cliff)

here:

u= initial velocity= 0 m.s^{-1}

\frac{200}{g'}+50 =0+\frac{1}{2} g'.t_f'^2

t_f'^2=\frac{400}{g'^2}+\frac{100}{g'}

t_f'=\sqrt{\frac{400}{g'^2}+\frac{100}{g'}  }

Similarly on earth:

t_f=\sqrt{\frac{400}{g^2}+\frac{100}{g}  }

Now the required time difference:

\Delta t=(t'+t_f')-(t+t_f)

\Delta t=(\frac{20}{g'}+\sqrt{\frac{400}{g'^2}+\frac{100}{g'}  }  )-(\frac{20}{g}+\sqrt{\frac{400}{g^2}+\frac{100}{g}  }  )

3 0
3 years ago
If Sean traveled 7 blocks in 200 seconds and each block is 150 meters. What is his velocity?
valentinak56 [21]

Answer:

5.25

Explanation:

tell me if u need an explanation

3 0
3 years ago
A pool ball is rolling at a velocity of 12 cm/s to the right when it is hit by another ball. It continues moving right at a velo
madam [21]

Answer:

B

Explanation:

Acceleration = rate of change in velocity

a = (21-12)/(0.45) = 20cm/s^2

6 0
3 years ago
2. What is the gravitational force on a 70.0 kg object that is 3.18 x 10 ^6m on the
Vlada [557]
Can you send a pic of the question
6 0
3 years ago
An object of mass 10 kg, initially at rest, experiences a constant horizontal acceleration of 4 m/s2 due to the action of a resu
finlep [7]

So, the total energy value that has been transferred by work is <u>32 kJ</u>.

<h3>Introduction</h3>

Hi ! In this question, I will help you. <u>Work is the amount of force exerted to cause an object to move a certain distance from its starting point</u>. In physics, the amount of work will be proportional to the increase in force and increase in displacement. Amount of work can be calculated by this equation :

\boxed{\sf{\bold{W = F \times s}}}

With the following condition :

  • W = work (J)
  • F = force (N)
  • s = shift or displacement (m)

Now, because in this question, the "s" is not directly known, whereas it is known that the initial velocity is zero, the object has an acceleration, and is moving in certain time intervals. Then, use this formula to find the value of "s" !

\boxed{\sf{\bold{s = \frac{1}{2} \times a \times t^2}}}

With the following condition :

  • s = shift or displacement (m)
  • a = acceleration (m/s²)
  • t = interval of the time (s)

<h3>Problem Solving </h3>

We know that :

  • a = acceleration = 4 m/s²
  • t = interval of the time = 20 s
  • m = mass = 10 kg

What was asked :

  • W = work = ... kJ

Step by Step :

  • Calculate value of force by multiple m and a

\sf{F = m \times a}

\sf{F = 10 \times 4}

\sf{\bold{F = 40 \: N}}

  • Calculate value of shift or displacement

\sf{s = \frac{1}{2} \times a \times t^2}

\sf{s = \frac{1}{\cancel 2} \times \cancel 4 \:_2 \times 20^2}

\sf{s = 2 \times 400}

\sf{\bold{s = 800 \: m}}

  • Last, calculate the value of work

\sf{W = F \times s}

\sf{W = 40 \times 800}

\boxed{\sf{W = 32,000 \: J = 32 \: kJ}}

So, the total energy value that has been transferred by work is 32 kJ.

4 0
3 years ago
Other questions:
  • The normal boiling point of water is 100.0 °c and its molar enthalpy of vaporization is 40.67 kj/mol. what is the change in entr
    15·1 answer
  • A ball is dropped from a height of 23.5 meters. Assuming no air resistance, how many seconds will it take the ball to hit the
    13·2 answers
  • How is thermal energy transferred between two objects that are at different temperatures?
    8·1 answer
  • A hockey puck is sliding across a frozen pond with an initial speed of 9.5 m/s. It comes to rest after sliding a distance of 37.
    7·1 answer
  • ¿Cómo es el movimiento uniforme de los pedales de una bicicleta con respeto a la tierra y con respecto al ciclista?
    12·1 answer
  • Using Hooke's law, F spring=k delta x, find the distance a spring with an elastic constant of 4 N/cm will stretch if a 2 newton
    10·1 answer
  • Complete the statement.
    5·1 answer
  • Name your favorite color.
    14·2 answers
  • The resistance of a component can be found by measuring the potential difference across it and the __________ that travelled thr
    12·1 answer
  • Which plate will feel stress in the form of compression?.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!