Answer:
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Explanation:
Answer:
Explanation:
Electrons will create negative and protons will create positive charge . 5.29 x 10⁶ electrons will neutralize same no of protons . So
( 7.07 - 5.29 ) x 10⁶ protons will create net positive charge
magnitude of this charge can be calculated as follows
no of protons x charge on one proton
(7.07 - 5.29)x 10⁶ x 1.6 x 10⁻¹⁹ C
2.848 X 10⁻¹³ C is the net charge on the sphere. Ans
b )
Protons and electrons have equal but opposite charges .
115 protons will neutralize the charge of 115 electrons .
225-115 = 110 electrons will remain un-neutralized .
Charge on these un-neutralized electrons will be calculated as follows .
no of electrons x charge on a single electrons
110 x 1.6 x 10⁻¹⁹ C
176 X 10⁻¹⁹C is the net charge on the sphere. Ans
The correct answer is c on a level surface normal force is greater then the weight of the object
The characteristics of electromagnetic radiation include amplitude (brightness), wavelength, frequency, and period. We have shown that the frequency of a light wave is proportional to its energy by the equation E = h v or E=hnu
so
Radiation with a wavelength of 8.1 X 10^-8 m has the highest energy
<h3>Why is it called electromagnetic?</h3>
- When a charged particle, like an electron, changes its velocity—that is, when it is accelerated or decelerated—electromagnetic radiation is created. The charged particle is responsible for losing the energy of the electromagnetic radiation that is thus created.
- Since the electric and magnetic fields are oscillating, the waves of energy are known as electromagnetic (EM). They are categorized by scientists based on their frequency or wavelength, from high frequency to low frequency (short to long wavelength).
- The characteristics of electromagnetic radiation include amplitude (brightness), wavelength, frequency, and period. We have shown that the frequency of a light wave is proportional to its energy by the equation E = h v or E=hnu
To learn more about : Electromagnetic radiation
Ref :brainly.com/question/1408043
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4.01 m/s
The is a conservation of momentum problem. The stuntman's momentum plus that of the kayak will remain constant. Since the momentum of the kayak is 0 at the beginning, we need to calculate what the momentum will be the moment after the stuntman lands in the kayak. We will consider the landing to be a non-elastic collision.
Initial momentum
80.8 kg * 5.50 m/s = 444.4 kg*m/s
Total mass of stuntman and kayak
80.8 kg + 29.9 kg = 110.7 kg
Speed of kayak and stuntman
444.4 kg*m/s / 110.7 kg = 4.014453478 m/s
Rounding to 3 significant figures gives 4.01 m/s