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
gogolik [260]
3 years ago
12

A net force of 60 N north acts on an object with a mass of 30 kg. Use Newton's second law of motion to calculate the amount of a

cceleration the object will experience. Then explain how the amount of acceleration will change if the net force or the mass of the object increases.
Physics
1 answer:
choli [55]3 years ago
4 0
<h3 /><h3>Answers :</h3><h3 />

F = m×a

60 N = 30 kg × a

30 × a = 60

a =  60/30

a =  2 m/s²

<h3 /><h3 />

<em>The acceleration of an object depends directly upon the net force acting upon the object, and inversely upon the mass of the object. </em>

<em></em>

Explanation:

If the net force increases while the mass of the object remains the same, the amount of acceleration also increases.

However, when the mass of the object increases while the net force remains the same, the amount of acceleration decreases.  

<h3 />

You might be interested in
A parallel-plate vacuum capacitor is connected to a battery and charged until the stored electric energy is . The battery is rem
Viktor [21]

Answer:

A

The energy dissipated in the resistor {U_k} = \frac{U}{k}

B

The energy dissipated in the resistor{U_k} = kU

Explanation:

In order to gain a good understanding of the solution above it is necessary to understand that the concept required to solve the question is energy stored in the parallel plate capacitor.

Initially, take the first case. In that, according to the formula for energy stored in parallel plate capacitor with the dielectric inserted between the two plates, find the energy stored. Then, find the energy stored in the parallel plate capacitor when no dielectric is present. Then, write the equation of energy stored in the capacitor with the dielectric present in the form of the energy stored in the capacitor without the dielectric present. The equation must not be in the form of voltage as battery is removed in this case.

For part B, use the equation of the energy dissipated in the resistor. Write it in the form of the equation for energy stored in the parallel plate capacitor without dielectric in it. The equation must be in the form of voltage as battery is kept connected. Looking at the fundamentals

The energy stored in the parallel plate capacitor with the dielectric is given by,

                 U _k = \frac{1}{2} \frac{q ^2}{kC}

Here, the energy stored in the capacitor will be equal to the energy dissipated in the resistor. In this equation, Uk is the energy dissipated in the resistor, q is charge, k is the dielectric constant, and C is the capacitance.

Now, the equation of the energy stored in the parallel plate capacitor without dielectric is,

​ U= \frac{1}{2} \frac{q ^2}{C}

In this equation, U is the energy stored in the parallel plate capacitor without dielectric, q is charge, and C is the capacitance.

For part B, the battery is still connected. Thus, the equation q = CV is used to modify the above equation.

Thus, the energy stored in the parallel plate capacitor with the dielectric is given by,

U_ k = \frac{1}{2} \frac{k ^{2} C^ 2 V ^2}{kC} \\\\= \frac{1}{2}  kCV ^2

In this equation, Uk is the energy dissipated in the resistor, V is voltage, k is the dielectric constant, and C is the capacitance.

The equation of the energy stored in the parallel plate capacitor without dielectric is,

U= \frac{1}{2} \frac{C^ 2 V ^2}{C} \\\\= \frac{1}{2} CV ^2

In this equation, U is the energy dissipated in the resistor, V is voltage, k is the dielectric constant, and C is the capacitance.

(A)

The equation for energy dissipated in the resistor is,

 U _k = \frac{1}{2} \frac{q ^2}{kC}

Substitute U = \frac{1}{2}\frac{{{q^2}}}{C}  in the equation of {U_k}

U _k = \frac{1}{2} (\frac{1}{k} )\frac{q ^2}{C} \\\\= (\frac{1}{k} ) \frac{q^2}{C}\\\\ U_{k} = \frac{U}{k}

Note :

If the resistance relates to the capacitor, the energy stored in the capacitor is dissipated through the resistance. Thus, by substituting the equation of U, the expression is found out.

(B)

The equation for energy dissipated in the resistor is

U_{k} = \frac{1}{2}kCV^2

Here, V is voltage in the circuit.

Substitute U =\frac{1}{2} CV^2 in the equation of {U_k}

So,

        U_{k} = \frac{1}{2} kCV^2\\

       = k(\frac{1}{2} CV^2)

       U_{k} = kU

4 0
2 years ago
An Air Force plane lands with a velocity of 125 m/s and accelerates at a maximum rate of -6.5 m/s^2.
Alisiya [41]

Answer:

a) 19.2 s

b) No

Explanation:

Given:

v₀ = 125 m/s

a = -6.5 m/s²

v = 0 m/s

a) Find: t

v = at + v₀

(0 m/s) = (-6.5 m/s²) t + (125 m/s)

t ≈ 19.2 s

b) Find: Δx

v² = v₀² + 2aΔx

(0 m/s)² = (125 m/s)² + 2 (-6.5 m/s²) Δx

Δx ≈ 1200 m

An aircraft carrier that's 850 meters long won't be long enough.

8 0
3 years ago
An echo is a reflection of sound against another surface. Suppose you are standing on one side of a canyon and you
Morgarella [4.7K]

Answer:

10-1 Temperature and Expansion. 135 ... text, the laboratory work that you do, or your physics teacher. ... Assume that the speed of sound in air is 340 m/s. How.

Explanation:

hope that helps

4 0
3 years ago
What piece of sports equipment is aerodynamic
Mashcka [7]
Aerobie.  Frisbee.  Discus.  Javelin.  I suppose an American football to some extent. 
<span>Pull!  Clay pigeons.  Arrows.  Wingsuit.  Kites.  Hang gliders.  Sails.  sailboat keels/dagger boards.  Water skis.  Ski jumping skis.  Boomerang.  </span>
<span>I'm excluding spheres and parachutes as bluff bodies even though aerodynamics often plays a big part in their motion.</span>
6 0
3 years ago
A wave has a wavelength of 14 m and a frequency of 24 Hz, what is the speed of the wave?
lapo4ka [179]

Answer:

Explanation: Speed = Wavelength x Wave Frequency. In this equation, wavelength is measured in meters and frequency is measured in hertz (Hz), .

6 0
2 years ago
Other questions:
  • You have been called to testify as an expert witness in a trial involving a head-on collision. Car A weighs 1515 lb and was trav
    6·2 answers
  • True or false Compared to water, most metals have low specific heats.
    9·2 answers
  • The Tour de France is the biggest bicycle race in the world. The race lasts for three weeks and is one of the biggest sporting e
    6·1 answer
  • The most important barriers to diffusion today are physical features of Earth's surface.
    5·1 answer
  • Find the mass of a golfball that accelerates at 18m/s2 when 8.3 N force is applied to it
    6·1 answer
  • How does the law of conservation of mass apply to chemical changes?
    8·2 answers
  • Consider a makeup mirror that produces a magnification of 1.5 when a person's face is 11.5 cm away what is the focal length of t
    8·1 answer
  • When is the electric flux on a section of a closed surface positive?.
    11·1 answer
  • Given that the radius of the moon is roughly one-quarter that of the earth, find the mass of the moon in terms of the mass of th
    7·1 answer
  • Ramu,the gardener,is trying to pull out weeds. however,he has to apply great force.why do you think he has to apply to much forc
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!