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Tasya [4]
4 years ago
9

Is the expression "The bigger they are, the harder they fall" a generally true statement since, in the absence of air resistance

, all objects fall with the same acceleration due to gravity? Pick the most correct answer.
Physics
1 answer:
ioda4 years ago
7 0
I<span>n the absence of air resistance, all objects fall with the same acceleration due to gravity.

The acceleration of gravity does not depend on mass of the object

Hope this helps!</span>
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A train crosses a bridge that is 1300 m long in 1 minute and 5 seconds.
Nat2105 [25]

Answer:

I'm pretty sure it's 20m/s because 1300m divided by 65 seconds is 20 so I think it's 20m/s

Explanation:

3 0
3 years ago
2 questions: Are seismic waves mechanical or electromagnetic waves, and are seismic waves transverse or compressional waves?
pashok25 [27]
Q. Are seismic waves mechanical or electromagnetic waves?

A. Seismic waves are mechanical waves.


Q. Are seismic waves transverse or compressional waves?

A. Seismic waves are compressional waves.
4 0
4 years ago
What always happens when two objects of different temperatures come in contact?
krek1111 [17]
When two objects<span> that are at </span>different temperatures come<span> into </span>contact... heatalways<span> transfers from the </span>object<span> with the higher </span>temperature<span> to the </span>object<span> with the lower temp. the total energy of the particles that make up a substance. In thermal energy the more particles there are of a given substance</span>
4 0
4 years ago
Nucleus P decays in two stages to produce nucleus Q. which decay sequence will result in the highest number of neutrons in nucle
Fynjy0 [20]
A beta particle followed by another beta particle. Consider it beta positive decay in which a proton decays to form a neutron,positron and electron neutrino.
7 0
3 years ago
A particle has rest mass 10-30 kg and travels at 0.5 c with respect to the Laboratory. Find its inertial mass, its momentum, its
astra-53 [7]

Explanation:

It is given that,

The rest mass of the particle, m_o=10^{-30}\ kg

Speed of the particle, v = 0.5c

Firstly calculating the relativistic factor. The formula is as follows :

\gamma=\dfrac{1}{\sqrt{1-\dfrac{v^2}{c^2}}}

\gamma=\dfrac{1}{\sqrt{1-\dfrac{(0.5c)^2}{c^2}}}

\gamma=1.032

1. Inertial mass is given by :

m=\gamma \times m_o

m=1.032 \times 10^{-30}

2. The momentum is given by :

p=\gamma\times mv

p=1.032\times 1.032 \times 10^{-30}\times 0.5c

p=1.59\times 10^{-22}\ kg-m/s

3. Kinetic energy of the particle is given by :

E_k=(\gamma-1)mc^2      

E_k=(1.032-1)\times 1.032 \times 10^{-30}\times (3\times 10^8)^2  

E_k=2.97\times 10^{-15}\ J

4. The total energy of the particle is :

E=\gamma mc^2

E=1.032\times 1.032 \times 10^{-30}\times (3\times 10^8)^2

E=9.58\times 10^{-14}\ J

Hence, this is the required solution.

7 0
4 years ago
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