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Bumek [7]
3 years ago
12

If an piano and an apple are dropped in a tunnel without air.which would hit the ground first

Physics
1 answer:
liq [111]3 years ago
4 0

Answer:

the piano.

Explanation:

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What is the difference between the control group and the experimental group in an experimental study?​
nikitadnepr [17]

Answer:

Explanation:

The only difference between the control and experimental group is the independent variable.

8 0
4 years ago
Read 2 more answers
In the Bohr model of the hydrogen atom, an electron (massm=9.1×10−31kg) orbits a proton at a distance of 5.3×10−11m. The proton
Marysya12 [62]

Answer:

\omega = 6.557 \times 10^{16}\ rev/s

Explanation:

GIVEN,

mass of electron =  9.1 x 10 kg

Radius = 5.3 x 10 m

pulling force = 8.2 x 10 N

Required centripetal for (Fe) for circular motion will be provided with electrical force (F)

      F = m_e\omega^2 r

      \omega = \sqrt{\dfrac{F}{m_e\ r}}

      \omega = \sqrt{\dfrac{8.2 \times 10^{-8}}{9.1 \times 10^{-31}\times 5.3 \times 10^{-11}}}

      \omega = \sqrt{0.17 \times 10^{34}}

       ω = 4.12 x 10¹⁶ rad/s

\omega = \dfrac{4.12 \times 10^{16}}{2\pi}

\omega = 6.557 \times 10^{16}\ rev/s

6 0
3 years ago
Define reflection and give to examples define refraction and give two examples
pickupchik [31]
Reflection- looking at yourself in a mirror and seeing the moon in the sky
Refraction- putting on your glasses in order to see more clearly and the pencil looks like it’s bent when you stick one end of it in water.
6 0
4 years ago
Use the drop-down menus to answer each question about hurricanes. What helps create the spin in a hurricane? What is the center
Leto [7]

1.coriolis effect!

2. eye of the storm!

3. warm ocean water!

these should be correct!

6 0
2 years ago
What is 1.2 kg converted into mg.<br> I need to know for step by step please?
astra-53 [7]
Here’s a good photo to reference when converting in the metric system.

Each time you move down a step you move the decimal to the right, each time you move up a step you move the decimal to the left.

We are going from 1.2 kg or kilograms, which is at the very top left of the ladder. To get to mg or milligrams, we would have to make six jumps, so we’d move the decimal over six times.

1.2 > 12. > 120. > 1200. > 12000. > 120000. > 1200000.

So our final answer would be 1,200,000mg.
4 0
4 years ago
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