This question involves the concepts of charge and potential difference.
The net charge on the balloon is "2.6 x 10⁻⁸ C".
<h3>Net Charge on Balloon</h3>
The balloon has a shape of a sphere. Therefore, the formula for the charge on the surface of a sphere can be used here, as follows:
where,
- Q = net charge = ?
- r = radius of balloon = 15 cm = 0.15 m
- V = potential difference = 1560 V
- = permittivity of free space = 8.85 x 10⁻¹² C²/N.m²
Therefore,
Q = (4π)(8.85 x 10⁻¹² C²/N.m²)(0.15 m)(1560 V)
Q = 2.6 x 10⁻⁸ C = 26 nC
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He will swim 180m if he stays at a constant rate of 30m/min
Explanation:
First I’m going to use 6 min for the 5min 60s
Then if he swims 30m/min then I’m 6min, 30•6 he’ll swim 180m
Hope this helps!
Answer:
2240.92365 m/s
Explanation:
= Mass of electron =
= Speed of electron =
= Neutrino has a momentum =
M = total mass =
In the x axis as the momentum is conserved
In the y axis
The resultant velocity is
The recoil speed of the nucleus is 2240.92365 m/s
Answer:
class
Explanation:
An examination of a tool mark is essential when it comes to "Criminalistics" <em>(the study of physical evidence in a crime). </em>It allows the forensic investigator to know what kind of tool was used in the crime scene. There are only two kinds of characteristics of tool marks and these are: individual and class. <em>Striated and molded are types of tool marks. </em>They are not characteristics.
The "class" characteristic of a tool mark allows the investigator to know the <u>shape of tool, its dimensions and its type</u>. However, <em>it doesn't point to the exact tool that was used, </em>but it gives him an idea how the mark was actually created.
Answer:
8090.01 J
Explanation:
The formula for kinetic energy is . We are given the mass and velocity, so plug what is given into the equation.