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VashaNatasha [74]
3 years ago
12

A 5 kg object is accelerating at 3 m/s² while being pulled. What is the magnitude of the force causing this acceleration?

Physics
1 answer:
Lera25 [3.4K]3 years ago
8 0

Answer:

The answer is the option D, Force = 15 N

Explanation:

In the image attached, we can see a free body diagram and applying the second law of Newton we have to find the force F in the equation given.

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A baby stroller is a rest on top of a hill which is 10 m high. The stroller and baby have a mass of 20 kg. What is the potential
Anettt [7]

The potential energy is defined as the energy is contained in the body due to the height over the surface of the earth and it is calculated from the equation

PE=mgh

<em>where:</em>

  • PE: the potential energy in Joules.
  • m: the mass of the body in kg.
  • g: the acceleration due to the gravity in m/s^2
  • h: the height of the body over the earth in meters.

<em>in our problem:</em>

PE=20*9.8*10=1960 J

6 0
3 years ago
A clay ball (mass = 0.25kg) has a rightward momentum of +1.75 kg∙m/s. A second clay ball (mass = 0.25 kg) has a leftward momentu
julia-pushkina [17]

1)

\begin{gathered} E1=\frac{1}{2}m_1v_1^2+\frac{1}{2}m_1v_2^2 \\ where: \\ m_1=m_2=0.25kg \\ v_1=7m/s \\ v_2=-7m/s \\ so: \\ E1=\frac{1}{2}0.25(7^2)+\frac{1}{2}0.25(7^2) \\ E1=6.125+6.125 \\ E1=12.25J \end{gathered}

Answer:

d. 12.25J

------------------------

2)

According to the conservation of energy:

\begin{gathered} E1=E2 \\ so: \\ E2=12.25J \end{gathered}

Answer:

b. 12.25

-------------------------------

3)

P1=m_1v_2+m_2v_2=+1.75-1.75=0

Answer:

d. 0 kg∙m/s

-----------------------------------------

4)

Using conservation of momentum:

\begin{gathered} P1=P2 \\ so: \\ P2=0 \end{gathered}

Answer:

b. 0 kg•m/s

3 0
1 year ago
Which layer in the atmosphere contains the most water vapor and gases? mesosphere thermosphere troposphere stratosphere
gregori [183]
The troposphere contains 80% of the the atmosphere, including the majority of gases and water vapor.
Hope it helps!
4 0
3 years ago
Read 2 more answers
Greenhouse gases are essential to support life on earth.
Kryger [21]

Answer:

True we need greenhouses for carbon dioxide

3 0
3 years ago
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What happens to the current in a circuit is a 1.5 volt battery is removed and replaced by a 3 volt battery
Illusion [34]
The current in the circuit drops and reduces, because of the higher voltage.

Because of the higher potential difference, the current in the circuit reduces as well.
5 0
3 years ago
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