1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Anettt [7]
2 years ago
15

Help pls it’s urgent giving brainiest!!

Physics
1 answer:
Lorico [155]2 years ago
3 0

Answer:

2nd no. positive.... 3rd no. negitive......

You might be interested in
Which force causes a wagon to speed up as it rolls down a hill?
Temka [501]
Gravity is the only one helping it.
7 0
3 years ago
Read 2 more answers
Four point charges of magnitudes +3q, -q, +2q, and -4q are arranged in the corners of a square of side length L. The charge -q c
mafiozo [28]

Answer:

d) 0 V

Explanation:

It can be showed that the potential due to a point charge q, to a distance d from the charge, can be expressed as follows:

V = \frac{k*q}{r}

where k = \frac{1}{4*\pi*\epsilon0} = 9e9 N*m2/C2

As the potential is an scalar, and is linear with the charge, we can apply the superposition principle, which means that we can find the potential due to one of the charges, as if the other were not present.

By symmetry, all four charges are at the same distance from the center, so we can write the total potential, as follows:

V = \frac{k}{d} ( q1 + q2 + q3 + q4) (1)

where d, is the semi-diagonal of the square, that we can find applying Pythagorean theorem, as follows:

d = \sqrt{\frac{L^{2}}{4} + \frac{L^{2}}{4} } = L*\frac{\sqrt{2}}{2}

Replacing by the values in (1) we have:

V = \frac{9e9N*m2/C2}{\frac{L}{2}*\sqrt{2} }* ( +3q -q + 2q + -4q)  = 0 V

which is equal to the option d).

6 0
3 years ago
If you know the distance traveled and the time traveled, you can determine an object’s
lara31 [8.8K]
If I tell you that I traveled 30 miles in the last 2 hours, the only thing you can calculate is my average speed during those two hours. You can't tell anything about my acceleration or the direction in which I traveled.
3 0
2 years ago
Unlike the outer planets all the inner planets have rings
AfilCa [17]
True or False. The answer to the question
6 0
3 years ago
Your shopping cart has a mass of 65 kilograms. In order to accelerate the shopping cart down an aisle at 0.3m/sec^2 , what force
Nitella [24]
The equation you would use here is F=ma, where F is the force in Newtons, m is the mass in kilograms (must be in kilograms in order for the units to match on both sides), and a is acceleration in meters per second squared. Therefore, you do: 65kg x .3m/s^2= FF. That'll give you the answer.
6 0
3 years ago
Other questions:
  • A ________ is a geographical area with a base transceiver station at its center.
    14·1 answer
  • Which of these is not an example of a physical change?
    6·2 answers
  • How many galaxies are present in the observable universe?
    8·2 answers
  • An train car of total mass of 13000 kg is pulling into a station and slowing down with an acceleration of -4.56 m/s^2. Before th
    7·1 answer
  • Determine the half-life of uranium-238 based on the graph.
    14·2 answers
  • Which of the following particles are responsible for producing electrical<br> energy?
    8·1 answer
  • Which of the following color schemes (specifically in jewel tones) is on-trend for 2020?
    6·2 answers
  • How do tornadoes end
    14·2 answers
  • How high is the average telephone pole
    9·2 answers
  • When magnesium fluoride reacts with iodine, the products are fluorine and magnesium iodide. What would the equation be?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!