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vaieri [72.5K]
3 years ago
9

The distance versus time graph for Object A and Object B are shown.

Physics
2 answers:
Sergeeva-Olga [200]3 years ago
8 0

Answer:

3

Explanation:

Both move with constant speed.

lianna [129]3 years ago
5 0
Both move with constant speed
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Say you want to make a sling by swinging a mass M of 1.7 kg in a horizontal circle of radius 0.048 m, using a string of length 0
DENIUS [597]

Answer:

Tension in the string is equal to 58.33 N ( this will be the strength of the string )

Explanation:

We have given mass m = 1.7 kg

radius of the circle r = 0.48 mF=\frac{mv^2}{r}=\frac{1.7\times 4.05^2}{0.48}=58.33N

Kinetic energy is given 14 J

Kinetic energy is equal to KE=\frac{1}{2}mv^2

So \frac{1}{2}\times 1.7\times v^2=14

v^2=16.47

v = 4.05 m/sec

Centripetal force is equal to F=\frac{mv^2}{r}=\frac{1.7\times 4.05^2}{0.48}=58.33N

So tension in the string will be equal to 58.33 N ( this will be the strength of the string )

3 0
3 years ago
Consider electrons of kinetic energy 6.0 eV and 600 keV. For each electron, find the de Broglie wavelength, particle speed, phas
irinina [24]

Answer:

For 6.0 eV

0.5 nm, 1.45*10^6 m/s, 6.17*10^10 m/s, 1.45*10^6 m/s

For 600 eV

1.26*10^-3 nm, 2.66*10^8 m/s, 3.37*10^8 m/s, 2.66*10^8 m/s

Explanation:

See attachment for calculation

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The spectrum of light emitted by helium atoms is different than that emitted by hydrogen atoms because
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<h3><u>Answer;</u></h3>

The different atoms have different quantized energy levels

<h3><u>Explanation;</u></h3>
  • The atoms of different elements have different energy levels because they have different nuclear charges and spins, and different numbers of electrons.
  • Each different kind of atom, like hydrogen or radon, has a distinct nuclear charge and number of electrons. This makes the potential energy function different for each atom, and therefore results in different energy levels.
  • In an emmission spectra, each bright band corresponds to a difference between energy levels within the atom.
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3 years ago
Find the radius using the centripetal acceleration formula: acceleration = 6.6 x 10^6 m/s^2 velocity = 2,000 rev/s
aksik [14]

the radius is 231

Explanation:

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What is the name of asteroids that stray outside the main belt and cross outside Mars taking them closer to the Sun?
Svetradugi [14.3K]

Answer:

b im pretty sure (let me know if this is correct!) :)

Explanation:

6 0
3 years ago
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