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
ArbitrLikvidat [17]
2 years ago
5

Question 2 of 10

Physics
1 answer:
makvit [3.9K]2 years ago
7 0

Answer:

D.Entropy tends to increase.

Explanation:

The second of thermodynamics states that the state of entropy of the entire universe,as an isolate system, will always increase over time

You might be interested in
My Notes An electron is released from rest on the axis of a uniform positively charged ring, 0.500 m from the ring's center. If
dsp73

Answer:

Velocity of the electron = v = 1.2\times 10^8\ m/s.

Explanation:

Given,

  • Mass of the electron = m_e\ =\ 9\times 10^{-31}\ kg
  • Charge on the electron = q_e\ =\ 1.62\times 10^{-19}\ C
  • Charge density of the ring = \rho\ =\ +1.00\times 10^{-6}\ C/m
  • Radius of the ring = R = 0.70 m
  • Distance between the electron ant the center or the ring = x = 0.5 m

Now total charge on the ring = Q\ =\ \rho\times 2\pi R

Potential energy due to the charged ring to the point on the x-axis is

P.E.\ =\ \dfrac{KQq_e}{\sqrt{R^2\ +\ x^2}}\\

Let v be the velocity of the electron at the center of the ring.

Total kinetic energy of the electron = \dfrac{1}{2}m_ev^2\\

Now, From the conservation of energy,

the total potential energy of the electron at initially is converted to the total kinetic energy of the electron at the center of the ring,

\therefore P.E.\ =\ K.E.\\\Rightarrow \dfrac{KQ}{\sqrt{R^2\ +\ x^2}}\ =\ \dfrac{1}{2}m_ev^2\\\Rightarrow v\ =\ sqrt{\dfrac{2 KQq_e}{m_e\sqrt{R^2\ +\ x^2}}}\\\Rightarrow v\ =\ \sqrt{\dfrac{2Kq_e\rho \times 2\pi R}{m_e\sqrt{R^2\ +\ x^2}}}\\\Rightarrow v\ =\ \sqrt{\dfrac{2\times 9\times 10^9\times 1.0\times 10^{-6}\times 2\times 3.14\times 0.7\times 1.6\times 10^{-19}}{9\times 10^{-31}\times \sqrt{0.7^2\ +\ 0.5^2}}}\\\Rightarrow v\ =\ 1.2\times 10^8\ m/s.

Hence the velocity of the electron on the center of the charged ring is 1.2\times 10^8\ m/s.

5 0
3 years ago
A satellite is orbiting Earth with a distance R = 2REarth from Earth's center. If the satellite is moved to a distance R = 4REar
Maslowich

Answer:

Half

Explanation:

Given that:

  • radial distance of satellite from the earth, R=2R_E

Now, if the satellite is moved to a distance R=4R_E

<u>We  have the mathematical expression for the potential energy fue to gravitational field as:</u>

U=\frac{G.M.m}{R} ...................(1)

where:

G = 6.67\times 10^{-11}\ m^3.kg^{-1}.s^{2}

M = mass of earth

m = mass of satellite

R = radial distance of satellite

<u>Now from eq. (1) initially we have:</u>

U=\frac{G.M.m}{2R_E}

<u>after the satellite is moved, we have:</u>

U'=\frac{G.M.m}{4R_E}

\Rightarrow U'=\frac{G.M.m}{2(2R_E)}

\Rightarrow U'=\frac{1}{2} \times U

which is half of the initial condition.

3 0
3 years ago
Explain the relationship between air resistance and gravitational acceleration on a falling object
Allushta [10]
Air resistance, also called drag, acts upon a falling body by slowing the body down to thr point where it stops accelerating, and it falls at a constant speed, known as the terminal volocity of a falling object. Air resistance depends on the cross sectional area of the object, which is why the effect of air resistance on a large flat surfaced object is much greater than on a small, streamlined object.

 
7 0
3 years ago
What trends were seen in Mendeleev’s periodic table?
katrin [286]
He arranged his periodic table by each elements atomic mass
3 0
3 years ago
Read 2 more answers
What is the acceleration of a car that starts from rest and attains a final speed of 20 m
OlgaM077 [116]

Answer:

323.9

Explanation:

3 0
3 years ago
Other questions:
  • An important measure of LCD monitors is the time in milliseconds (ms) that it takes to turn a pixel on or off. What is this call
    15·1 answer
  • Which of the following factors might be affected by a wildfire? a. food b. shelter c. biodiversity d. all of the above Please se
    14·2 answers
  • Para levantar del suelo una caja metálica de 50 Kg se emplea maquinaria que utiliza un cable inextensible e imprime una acelerac
    14·1 answer
  • Leafy greens are considered the healthiest vegetable because of their ___ nutrients profile
    7·1 answer
  • what is usually caused when dissimilar materials are rubbed together transferring electrons from one to another
    7·1 answer
  • PLEASE HELP ASAP BEST ANSWER WILL BE MARKED BRAINLIEST
    15·1 answer
  • ¿Qué dice el principio de conservación de la energía?
    5·1 answer
  • Can you answer this​
    5·2 answers
  • How long does it take a car traveling at 50 mph to travel 75 miles? Use one of the following to find the answer.
    10·1 answer
  • PLEASE HELP ASAP I WILL GIVE YOU BRAINLEAST (15 POINTS)
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!