Answer:
3610 m/s^2
Explanation:
The centripetal acceleration of the tip of the test tube is given by:
where
v = 19.0 m/s is the velocity of the tip
r = 10.0 cm = 0.1 m is the radius of the circular trajectory of the tip
Substituting the numbers into the formula, we find
Answer:
There are 887.5 number of excess electrons on the each spheres.
Explanation:
It is given that, the force of repulsion between two spheres is, 
We know that the force of attraction or repulsion between charges is given by :
It is assumed that the separation between the spheres is 20 cm or 0.2 m. So,
Let there are n excess electrons that must be present on each sphere. It can be given by using quantization of charge as :
n = 887.5 electrons
So, there are 887.5 number of excess electrons on the each spheres. Hence, this is the required solution.
Answer:
Gamma radiation
Explanation:
There are three types of ionizing radiation:
- Alpha radiation: it consists of alpha particles, which are nuclei of helium (so, they contain 2 protons and 2 neutron) --> therefore, they have a net charge of +2 (given by the positive charge of the two electrons)
- Beta radiation: it consists of electron (in case of beta-minus radiation) or positrons (in case of beta-plus radiation). Therefore, in both cases the radiation is electrically charged: charge -e for the electrons, charge +e for the positrons
- Gamma radiation: it consists of high-energy photons. Since photons are electrically neutral, gamma radiation has no electric charge associated with it.
RADIATION
There are three types of heat transfer or heat propagation; conduction, convection and radiation. Heat transfer is the process by which heat projects externally however, depending on the temperature and pressure. Also called the movement of heat from a low temperatured state which increases as heat progresses.
Conduction is the heat transfer by contact, immediate contact.
Convection is the transfer of heat through air and water.
<span>Radiation is the transfer of heat regardless of the presence of atoms or particles.<span>
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Answer:
The Light was reflected, b.
Explanation:
If the flashlight was pointed at the mirror, it was reflected because it did not stop on the mirror or go through the mirror or reflect in different ways.
