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
zhuklara [117]
3 years ago
9

An isolated system consists of two particles shown above. Particle 1 has charge +q and mass m. Particle 2 has charge +2q and mas

s 2m. The ratio of the magnitude of the electrical force on particle 1 to the magnitude of the electrical force on particle 2 is.
A 1/4
B 1/2
C 1
D 2
E 4
Physics
1 answer:
skelet666 [1.2K]3 years ago
8 0
The answers b I believe but I don’t really know
You might be interested in
6. Mr. Leppold jumps out of a plane with a parachute...before the chute opens,
polet [3.4K]

1) He has both potential and kinetic energy

2) Before the parachute opens, the potential energy decreases and the kinetic energy increases

Explanation:

1)

The gravitational potential energy of a body is the energy possessed by the object due to its position in a gravitational field, and it is given by:

PE=mgh

where

m is the mass of the body

g is the acceleration of gravity

h is the height of the body above the ground

On the other hand, the kinetic energy of a body is the energy possessed by the body due to its motion; it is given by

KE=\frac{1}{2}mv^2

where

v is the speed of the object

Here Mr. Leppold has both potential and kinetic energy before opening the parachute, because:

- It is moving at a certain speed, so v\neq 0, therefore he has kinetic energy

- He is at a certain height above the ground, h\neq 0, therefore he has potential energy

2)

The total mechanical energy of Mr.Leppold is the sum of the potential and the kinetic energy:

E=PE+KE

According to the law of conservation of energy, in absence of air resistance, this quantity remains constant.

During the fall, the height of Leppold decreases: this means that as h decreases, the potential energy decreases  too.

However, the total energy E must remain constant: therefore, this means that the kinetic energy KE must increase, and this occurs because the speed of Mr. Leppold increases as he falls.

Learn more about kinetic and potential energy:

brainly.com/question/6536722

brainly.com/question/1198647

brainly.com/question/10770261

#LearnwithBrainly

8 0
3 years ago
A middle-A tuning fork vibrates with a frequency f of 440 hertz (cycles per second). You strike a middle-A tuning fork with a fo
jeyben [28]

Answer:

P = 5sin(880πt)

Explanation:

We write the pressure in the form P = Asin2πft where A = amplitude of pressure, f = frequency of vibration and t = time.

Now, striking the middle-A tuning fork with a force that produces a maximum pressure of 5 pascals implies A = 5 Pa.

Also, the frequency of vibration is 440 hertz. So, f = 440Hz

Thus, P = Asin2πft

P = 5sin2π(440)t

P = 5sin(880πt)

3 0
3 years ago
What are the three most abundant gases in the dry atmosphere?
Anastaziya [24]

Answer:

Nitrogen, Oxygen, Argon.

Explanation:

The three (3) most abundant gases in the dry atmosphere are"

- Nitrogen

- Oxygen

- Argon

These are not the only components of dry air. Dry atmosphere is made up of:

- 78.09% Nitrogen;

- 20.95% Oxygen;

- 0.93% Argon;

- 0.04% Carbon dioxide;

- Other gases

6 0
2 years ago
Read 2 more answers
Heat is transferred in a gas through _____.
tangare [24]
The answer would be conduction. hope that helped
3 0
2 years ago
Read 2 more answers
A length of copper wire carries a current of 11 A, uniformly distributed through its cross section. Calculate the energy density
NISA [10]

Answer:

a)0.983 \frac{J}{m^3}

b)u_E =7.329x10^-3 \frac{J}{m^3}

Explanation:

The energy density is "the energy per unit volume, in the electric field.  The energy stored between the plates of the capacitor equals the energy per unit volume stored in the electric field times the volume between the plates".

A magnetic field is a "vector field that describes the magnetic influence of electric charges in relative motion and magnetized materials".

Part a

For this case we can assume use the equation for the magnetic field in terms of the energy per unit of volume.

B=\sqrt{2\mu_o u}

Where μ0 represent the permeability constant, also known as the magnetic constant. If we solve for u we got:

u=\frac{B^2}{2\mu_o}

We also know that the magnetic field can be expressed in terms of the current and the radius of action R like this:

B=\frac{\mu_o i}{2\pi R}

Replacing this on the formula for u we have:

u=\frac{1}{2\mu_o}(\frac{\mu_o i}{2\pi R})^2

And simplyfing we got:

u=\frac{\mu_o i^2}{8\pi^2 R^2}

Replacing the values given we have:

u=\frac{(4\pix10^{-7} \frac{H}{m} (11A)^2}{8\pi^2 (0.0014m)^2} =0.983 \frac{J}{m^3}

Part b

The density current is given by this formula J=i/A and the resistance by R=\frac{\rho l}{A}

If we use the equation for the energy density we have this:

u_E =\frac{1}{2}\varepsilon_o E^2 =\frac{\varepsilon}{2}(\rho J)^2=\frac{\varepsilon}{2}(\frac{iR}{l})^2

And replacing the values given we have:

u_E =\frac{8.85x10^{-12}\frac{F}{m}}{2}(\frac{11A(3700\frac{\Omega}{m})}{l})^2 =7.329x10^-3 \frac{J}{m^3}

4 0
3 years ago
Other questions:
  • If you see lightening bolt and count for 4 seconds before you hear the thunder how far away was the lightening strike ? It was n
    5·1 answer
  • Two 1.0 kg masses are 1.0 m apart (center to center) on a frictionless table. Each has a +10μC of charge. a) What is the magnitu
    15·1 answer
  • The major horizontal surface on an airplane that provides lift.​
    5·1 answer
  • You find that it is easier to increase your speed on your bike if you crouch
    12·1 answer
  • You need to design a photodetector that can respond to the entire range of visible light. True or False
    12·1 answer
  • How many atoms of carbon would two molecules of glucose (C6H12O6) have?
    8·2 answers
  • Based on what you have read provide two positives and two negatives the Suarez family would face if they switch to organic farmi
    9·1 answer
  • Question 1 of 6
    6·1 answer
  • Please answer soon
    8·1 answer
  • During an experiment, your teacher gives you two objects: tissue paper and a balloon. You observe that the tissue paper repels t
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!