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
ser-zykov [4K]
3 years ago
12

Three forces acting at a point keep it in equilibrium . If the angle between two of the forces , 3 N and 3 Nis 120°, then the th

ird force
is
Physics
1 answer:
Gennadij [26K]3 years ago
8 0

Answer:

  see attachments

Explanation:

The force necessary to maintain equilibrium depends on the directions of the two forces that are separated by 120°. If both are pointing toward or away from the point, the third force will be pointing that same direction. It will be 120° from the other two, and the same magnitude (3 N).

If the one of the two forces is pointing toward, and the other is pointing away, then the third force will have magnitude 3√3 N, and will be 30° from one of the other forces. This is illustrated in the 2nd attachment.

You might be interested in
Physical data is often used in the court system. In fact, police officers use radar to determine your speed when you are driving
Mashcka [7]

The driver is telling the truth, the radar gun must have been set incorrectly to record relative velocity.

The given parameters:

  • <em>Speed of the driver observed by the stationary police officer, Vo = 44.7 m/s</em>
  • <em>Speed of the driver, V = 26.8 m/s.</em>
  • <em>Speed limit = 60 mph</em>

The speed limit of the driver in meter per second is calculated as follows;

= 60 \ \times \frac{miles}{hour} \times \frac{1609.34 \ m}{1 \ mile} \times \frac{1 \ hr}{3600 \ s}\\\\= 26.82 \ m/s

From the speed limit, it is obvious that the driver's speed is within the limit. Thus, we can conclude that the driver is telling the truth, the radar gun must have been set incorrectly to record relative velocity.

Learn more about relative velocity here: brainly.com/question/17228388

6 0
2 years ago
what is the final potential if 4j of work done to move 2c of charge from a point having initial potential of 5
a_sh-v [17]

Answer:

It’s 1

Explanation:

Potential difference =Work Done (in Joules)/ Total Charge(in Coulomb)

So Here

Potential difference =2J/2C

=1V

thankyou : )

7 0
3 years ago
What is the kinetic energy of a 0.012 kg bullet traveling at 700 m/s?
andriy [413]

Answer:

m=0.012

v=700

KE = 1/2mv^2

KE = 1/2(700)(0.012)

KE = 4.2J

8 0
3 years ago
Please help me if you know physics
Nitella [24]

Answer:

  19.  down

  20.  True

Explanation:

The examples I saw were projectiles launched at different angles and speeds. In each case, the only acceleration was ...

  19:  down

  20:  due to gravity (true)

4 0
3 years ago
A student sits in a chair that can spin without friction. The student has her hands outstretched and starts rotating at 1.9 rev/
Airida [17]

Answer:

the resulting angular speed after she pulls her hand inwards in (rad/s)  is  27.02 rad/s

Explanation:

Given that :

the initial angular speed \omega_1 = 1.9 \ \ rev/s

Initial rotational inertia I_1 = 12.00 \ \ kg.m^2

Final angular speed \omega_2 = ???

Final rotational inertia I_2 = 5.3 \ \ kg.m^2

According to conservation of momentum :

Initial momentum = final momentum

I_1 \omega_1 = I_2 \omega_2

\omega_2 = \frac{I_1 \omega_1}{I_2}

\omega_2 = \frac{12.00*1.9}{5.3}

\omega_2 = 4,3 rev/s

To rad/s ; we have:

1  \   rev/s = 2 \pi \ \  rad/s

\omega_2 = 4.3 * 2 \pi \ \  rad/s

\omega_2 = 27.02  \ \ rad/s

Therefore the resulting angular speed after she pulls her hand inwards in (rad/s) = 27.02 rad/s

8 0
3 years ago
Other questions:
  • The conservation laws, show ift<br>te-te​
    6·1 answer
  • As a person squeezes and applies pressure to the outside of a balloon air particles inside
    8·1 answer
  • What causes interstellar dust and clouds into plants and stars
    8·1 answer
  • How does increasing the distance between charged objects affect the electric force between them?
    5·1 answer
  • A resistor and a capacitor are connected in series across an ideal battery having a constant voltage across its terminals. (a) A
    15·1 answer
  • Which of the following activities could lead to injuries?
    9·2 answers
  • GETTING TIMED PLS HELP! Do the runners in the picture above represent kinetic or potential energy? you need to explain why.
    14·1 answer
  • Can someone pleassssssssssse answer this
    6·1 answer
  • Studying this brochure from nasa, which explains more detail the instruments carried by the Juno spacecraft which scientific act
    9·1 answer
  • The uniform rods AB and BC weigh 24 ky and kg, respectively,and the small wheel at C is of negligible weight. If the wheel ismov
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!