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r-ruslan [8.4K]
3 years ago
10

What is the definition of visible white light wave (RoyGBive)

Physics
1 answer:
uranmaximum [27]3 years ago
5 0

There's no such thing as a wave of white light.  Every light wave with
a certain wavelength has some color.  White light is a mixture of all
the different wavelengths with all of the different visible colors. 
They're ALL there in white light.  When they all enter your eye at
the same time, your brain gets the message of brightness with
no particular color, which we call "white light".

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A child is riding a merry-go-round that has an instantaneous angular speed of 12 rpm. If a constant friction torque of 12.5 Nm i
sammy [17]

Answer:

-0.25 rad/s^2

Explanation:

The equivalent of Newton's second law for rotational motions is:

\tau = I \alpha

where

\tau is the net torque applied to the object

I is the moment of inertia

\alpha is the angular acceleration

In this problem we have:

\tau = -12.5 Nm (net torque, with a negative sign since it is a friction torque, so it acts in the opposite direction as the motion)

I=50.0 kg m^2 is the moment of inertia

Solving for \alpha, we find the angular acceleration:

\alpha = \frac{\tau}{I}=\frac{-12.5 Nm}{50.0 kg m^2}=-0.25 rad/s^2

3 0
3 years ago
A driven gear with 60 teeth is driven by a driven gear of 30 teeth what is the VR of
noname [10]

Answer:

VR=2

Explanation:

driven=60

driving=30

but VR=driven/driving

VR=60/30

VR=2

hence the velocity ratio VR is 2

6 0
3 years ago
Please help me with this please
goblinko [34]

#1).
transfers energy ... both kinds of waves do that
travels in a vacuum ... mechanical waves can't do that
has frequency ... both kinds of waves have
requires a medium ... electromagnetic waves don't need it

2).
infrared, visible, ultraviolet
listed from longest to shortest wavelength


6 0
3 years ago
Ethan is using a machine to mix cement. The work input is 10 and the work output is 8. What is the efficiency of the
Arturiano [62]

Efficiency or \eta is calculated by formula: \eta=\frac{W_{output}}{W_{input}} where \eta\leq1 also efficiency has no unit.

Now put in the data and calculate the efficiency.

\eta=\frac{8}{10}=\boxed{0.8}

The efficiency of the machine is 0.8

If you want to get percentage just multiply by 100 and you get 80%

Hope this helps.

r3t40

4 0
3 years ago
There is a bell at the top of a tower that is 95 m high. The mass of the bell is 21 kg. What is the potential energy of the bell
melomori [17]

Answer:

19,551 J!

Explanation:

The formula is PE = ham (h=height, a= acceleration or 9.8, m= mass)

PE = (95)(9.8)(21)

PE = 19,551 Joules

5 0
3 years ago
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