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
kramer
3 years ago
8

Two identical spring scales are each attached to a cord that is wrapped around a pulley. the two pulleys have identical mass

Physics
1 answer:
Paladinen [302]3 years ago
8 0
What is the question sorry.
You might be interested in
A space shuttle orbits Earth at a speed of 21,000 km/hr. How far will it travel in 5 hours?
lianna [129]

Answer:

105000km

Explanation:

Given parameters:

Speed of shuttle = 21000km/hr

Time of travel  = 5hrs

Unknown:

The distance covered by the space shuttle;

Solution:

Distance is the length of the path traveled.

   Distance  = speed x time

Input the parameters and solve;

     Distance = 21000km/hr x 5hrs

     Distance  = 105000km

6 0
3 years ago
For an air bag to work, it has to inflate full of nitrogen incredibly fast-within to
Lunna [17]

5.8 moles of nitrogen gas are needed to pressurize the air bag.

<h3>What's the expression of Ideal gas equation?</h3>
  • Ideal gas equation is PV=nRT
  • P= pressure, V = volume, n= no. of moles of gas, R= universal gas constant, T = temperature of the gas

<h3>What's the no. of moles of nitrogen present in a 60L air bag at 2.37 atm pressure and 25°C temperature?</h3>
  • P= 2.37 atm, V = 60L, R= 0.0821 L-atm/mol-K, T = 25°C = 298K
  • n= PV/RT

= (2.37×60)/(0.0821×298)

= 5.8 moles

Thus, we can conclude that 5.8 moles of nitrogen gas are needed to pressurize the air bag.

Learn more about the ideal gas here:

brainly.com/question/20348074

#SPJ1

8 0
2 years ago
A person jumps out a fourth-story window 14 m above a firefighter safety net. The survivor stretches the net 1.8 m before coming
Monica [59]

Answer:

The deceleration is  a =  - 76.27 m/s^2

Explanation:

From the question we are told that

   The height above  firefighter safety net is H  = 14 \ m

   The length by which the net is stretched is s =  1.8 \ m

   

From the law of energy conservation

    KE_T + PE_T =  KE_B + PE_B

 Where KE_T is the kinetic energy of the person before jumping which equal to zero(because to kinetic energy at maximum height )

   and  PE_T is the potential energy of the before jumping  which is mathematically represented at

          PE_T  = mg H

and  KE_B is the kinetic energy of the person just before landing on the safety net  which is mathematically represented at

        KE_B = \frac{1}{2} m v^2

and  PE_B is the potential energy of the person as he lands on the safety net which has a value of zero (because it is converted to kinetic energy )

   So the above equation becomes

          mgH =  \frac{1}{2} m v^2

=>           v =  \sqrt{2 gH }

    substituting values

                v =  16.57 m/s

Applying the equation o motion

             v_f =  v  + 2 a s

Now the final velocity is zero because the person comes to rest

      So

         0 = 16.57 + 2 * a * 1.8

            a =  - \frac{16.57^2 }{2 * 1.8}

            a =  - 76.27 m/s^2

         

         

4 0
3 years ago
A sound wave is an example of an electromagnetic wave in nature?
AVprozaik [17]
No. Sorry. A sound wave is a mechanical wave. There's nothing electromagnetic about it.
8 0
4 years ago
this stationary wave is what we call the first harmonic of the first normal mode of the system. in units of l, the length of the
Dafna1 [17]

The wavelength of the first harmonic of the standing wave is 2L.

<h3>What is a standing wave?</h3>

A standing wave is one in which the obvious points remain fixed as the vibration continues. A standing wave occurs in a wind instrument such as a trumpet, saxophone etc.

We know from  the formula of the first harmonic that the wavelength of the first harmonic of the standing wave is 2L.

Learn more about standing wave:brainly.com/question/1121886?

#SPJ11

3 0
2 years ago
Other questions:
  • When Javier touches a hot mug of tea, energy is transferred from the surface of the mug to his hand. What kind of energy is this
    6·2 answers
  • When fertilized what will the ovary grow into on a flower
    15·1 answer
  • Astronomers believe that the universe began as an enclosed, cold object. true or false?
    14·2 answers
  • Is it okay to let children use a phone at dinner? good or not good?
    8·2 answers
  • If you wanted to increase your muscular endurance, it would be important to participate in activities that __________.
    7·2 answers
  • A block of mass 0.250 kg is placed on top of a light, vertical spring of force constant 5 000 N/m and pushed downward so that th
    6·1 answer
  • How long must you wait (in half-lives) for a radioactive sample to drop to 2.10 % of its original activity?
    9·1 answer
  • How would you describe your appetite over the past couple of weeks? Have your eating habits altered in any way?
    6·2 answers
  • If a 2 kg ball is moving at 6 m/s to the right and then hits a wall and bounces back at - 4 m/s (left), what is the change in mo
    10·1 answer
  • Margie used arrows to represent the gases that enter and leave a plant during the process of photosynthesis, as shown below. PLE
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!