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Misha Larkins [42]
3 years ago
7

Express 50,000 m/s2 in scientific notation.

Physics
2 answers:
Volgvan3 years ago
8 0
5x10 to the 4th power
Vinvika [58]3 years ago
5 0

<u>Answer:</u> The given number expressed in scientific notation is 5\times 10^4m/s^2

<u>Explanation:</u>

Scientific notation is defined as the representation of expressing the numbers that are very big or very small and is written in the decimal form. This means that the number is always written in the power of 10 form.

For Example: 5232 is written as 5.232\times 10^3

We are given:

Number having value 50,000m/s^2

The given number is written as 5\times 10^4m/s^2 in the scientific notation form.

Hence, the given number expressed in scientific notation is 5\times 10^4m/s^2

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If the briefcase hits the water 6.0 s later, what was the speed at which the helicopter was ascending?
vovikov84 [41]

Complete Question

In an action movie, the villain is rescued from the ocean by grabbing onto the ladder hanging from a helicopter. He is so intent on gripping the ladder that he lets go of his briefcase of counterfeit money when he is 130 m above the water. If the briefcase hits the water 6.0 s later, what was the speed at which the helicopter was ascending?

Answer:

The speed of the helicopter is u  =  7.73 \  m/s

Explanation:

From the question we are told that

   The height at which he let go of the brief case is  h =  130 m  

    The  time taken before the the brief case hits the water is  t =  6 s

Generally the initial speed of the  briefcase (Which also the speed of the helicopter )before the man let go of it is  mathematically evaluated using kinematic equation as

      s = h+  u t +  0.5 gt^2

Here s  is the distance covered by the bag at sea level which is zero

      0 = 130+  u * (6) +  0.5  *  (-9.8) * (6)^2

=>    0 = 130+  u * (6) +  0.5  *  (-9.8) * (6)^2

=>   u  =  \frac{-130 +  (0.5 * 9.8 *  6^2) }{6}

=>   u  =  7.73 \  m/s

     

7 0
3 years ago
What is the repulsive force between two pith balls that are 10.0 cm apart and have equal charges of -40.0 NC?
galina1969 [7]

Answer:

So the repulsive force between the pith ball will be 1.44\times 10^{-3}N

Explanation:

We have given that the pith ball have the equal charge q = -40 nC =-40\times 10^{-9}C

Distance between the charges = 10 cm =0.1 m

According to coulombs law F=\frac{KQ_1Q_2}{R*2}

F=\frac{9\times 10^9\times -40\times 10^{-9}\times -40\times 10^{-9}}{0.1^2}=1440000\times 10^{-9}=1.44\times 10^{-3}N

So the repulsive force between the pith ball will be 1.44\times 10^{-3}N

5 0
3 years ago
Geologists cannot yet predict earthquakes because
katrin2010 [14]
<span>Geologists cannot yet predict earthquakes because the earthquakes caused by the movement of plates do not have the precise time and place when will it moves.</span>
3 0
4 years ago
Electromagnetic waves are produced when _____.
Tju [1.3M]

Answer: The correct answer is a.

Explanation:

Electromagnetic wave is a wave in which the magnetic field and the electric field are perpendicular to each other.

Both fields are directed in the direction of the propagation of the electromagnetic wave. It travels with the speed of the light.

The motion of the electric field produces both electric field and the magnetic field.

The electromagnetic waves are produced when an electric charge vibrates or accelerates.

Therefore, the correct option is (a).

6 0
3 years ago
Read 2 more answers
a plane inclined at an angle of 30° to the horizontal has an efficiency of 50%. the force parallel to the plane required to push
Nutka1998 [239]

Answer:

Correct Answer: Option B

Explanation

V.R = 1sinθ=1sin30=21sinθ=1sin30=2

M.A = E×V.R100=50×2100=1E×V.R100=50×2100=1

Effort = loadM.A=1201=120N

3 0
3 years ago
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