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Tatiana [17]
3 years ago
11

Answer all these questions for a TON OF POINTS

Physics
2 answers:
Sladkaya [172]3 years ago
7 0

Answer:

1). E

2). A

3). 4N

4). D

Explanation:

IgorC [24]3 years ago
3 0
1). E
2). A
3). 4N
4). D
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What 2 things need to be known about an object in order to determine its kinetic energy?
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I believe the answer is the mass of the object and the speed at which it is moving. 
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Charge q is accelerated starting from rest up to speed v through the potential difference V. What speed will charge q have after
adoni [48]

Answer: v = 1.19 * 10^{6} m/s

Explanation: q = magnitude of electronic charge = 1.609 * 10^{-19} c

mass of an electronic charge = 9.10 * 10^{-31} kg

V= potential difference = 4V

v = velocity of electron

by using the work- energy theorem which states that the kinetic energy of the the electron must equal the work done use in accelerating the electron.

kinetic energy = \frac{mv^{2} }{2},  potential energy = qV

hence, \frac{mv^{2} }{2} = qV

\frac{9.10 *10^{-31} * v^{2}  }{2} = 1.609 * 10^{-16} * 4\\\\\\\\9.10*10^{-31}  * v^{2} = 2 * 1.609 *10^{-16} * 4\\\\\\9.10 *10^{-31} * v^{2} = 1.287 *10^{-15} \\\\v^{2} = \frac{1.287 *10^{-15} }{9.10 *10^{31} } \\\\v^{2} = 1.414*10^{15} \\\\v = \sqrt{1.414*10^{15} } \\\\v = 1.19 * 10^{6} m/s

7 0
3 years ago
5. A current of 3.00 A flows through a resistor when it is connected
viktelen [127]
I think it is D
Hope my answer help you?
7 0
2 years ago
O que é cena fone de luz na visão da fisica
yulyashka [42]
Me don’t speak spanish
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3 years ago
The table below describes some features of methods used to generate electricity. Name method 4.
alina1380 [7]

Answer:

Hydroelectricity

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Because of flooding of water, we can assume that the electricity was generated by Water which is known as Hydroelectricity.

4 0
3 years ago
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