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chubhunter [2.5K]
3 years ago
15

Is a force that opposes the motion between two objects in contact with each other.

Physics
2 answers:
Sergeeva-Olga [200]3 years ago
7 0

Answer: Friction  :)        

Wewaii [24]3 years ago
6 0
The answer above is correct. It is friction!
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Light does not pass through some materials. What do you think happens
Hatshy [7]

Answer:

When an electron is hit by a photon of light, it absorbs the quanta of energy the photon was carrying and moves to a higher energy state. One way of thinking about this higher energy state is to imagine that the electron is now moving faster, (it has just been "hit" by a rapidly moving photon)

A photon is a quantum of EM radiation. Its energy is given by E = hf and is related to the frequency f and wavelength λ of the radiation by. E=hf=hcλ(energy of a photon) E = h f = h c λ (energy of a photon) , where E is the energy of a single photon and c is the speed of light.

7 0
2 years ago
What is the basic formula for the harmonic of a standing wave
Pie

fn=nf1 is the formula

4 0
3 years ago
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A 1.0kg ball has a momentum of 12kg m/s what is the balls speed
Anastasy [175]
The momentum of an object is given by:
p=mv
where
p is the momentum
m is the mass
v is the velocity of the object

The ball in our problem has a mass of m=1.0 kg and a momentum of p=12 kg m/s, therefore we can use the previous formula to find its velocity:
v= \frac{p}{m}= \frac{12 kg m/s}{1.0 kg}=12 m/s
8 0
3 years ago
A horizontal force of 14.0N is applied to a box of m=32.5kg with Vo=0. Ignoring friction, how far does the crate travel in 10.0s
Alex Ar [27]
I’m going to assume initial velocity is 0.

Use Newton’s second law:

F = m•a

F/m = a

14.0/32.5kg= 28/65 m/s^2

Use constant SUVAT acceleration formulae:

S- displacement - what we need to find out

U - initial velocity - 0

V

A - 28/65 m/s^2

T - 10 seconds

S = ut + 1/2at^2

Since u = 0

S = 1/2at^2

1/2• 28/65 • 10^2 = 21.5metres~

Answer is 21.5 metres

~Hoodini, here to help.
6 0
3 years ago
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Ainat [17]

Answer:

Either absorption or emission lines

Explanation:

For the radial speed of an astronomical object to be determined with a Doppler shift, what must we be able to see in the object's spectrum, Either absorption or Emission lines.

Asorption and Emission line explained below;

  • Absorption lines are usually seen as dark lines, or lines of reduced intensity, on a continuous spectrum.
  • An emission line will appear in a spectrum if the source emits specific wavelengths of radiation.

5 0
3 years ago
Read 2 more answers
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