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
Tanya [424]
2 years ago
8

Cho hai điện tích q1 = 2.10-6 C, q2 = 4. 10-6C, đặt tại A và B trong không khí biết AB = 2 cm. Xác định vectơ cường độ điện trườ

ng tại:
a) H, là trung điểm của AB.
b) . M, MA = 1 cm, MB = 3 cm.
c) N, biết rằng NAB là một tam giác đều.
Chemistry
1 answer:
Nitella [24]2 years ago
6 0

Answer:

<h3>A</h3>

Explanation:

<h2>sorry try lang baka mali</h2><h2 />
You might be interested in
) determine the henry's law constant for ammonia in water at 25°c if an ammonia pressure of 0.022 atm produces a solution with a
Nataly [62]

Answer:

a. 59 m/atm

Explanation:

  • To solve this problem, we must mention Henry's law.
  • <em>Henry's law states that at a constant temperature, the amount of a given gas dissolved in a given type and volume of liquid is directly proportional to the partial pressure of that gas in equilibrium with that liquid.</em>
  • It can be expressed as: C = KP,

C is the concentration of the solution (C = 1.3 M).

P is the partial pressure of the gas above the solution (P = 0.022 atm).

K is the Henry's law constant (K = ??? M/atm),

∵ C = KP.

∴ K = C/P = (1.3 M)/(0.022 atm) = 59.0 M/atm.

3 0
3 years ago
Is the planet Uranus surface rocky or flat?
klemol [59]

Uranus is said to be made of fluids. Its atmosphere is its surface
6 0
3 years ago
An atom (not a hydrogen atom) absorbs a photon whose associated wavelength is 300 nm and then immediately emits photon whose ass
KIM [24]

Answer:

The net energy is 2.196 eV

Explanation:

Basically, the energy of an atom increases when it absorbs a photon. In addition, the wavelength of the emitted photon is longer such that the atom absorbed a net energy in the process.

Using:

ΔE = h*c*(1/λ_{1} - 1/λ_{2})

where:

ΔE is the net energy in eV (electron-volt). 1 eV is equivalent to 1.602*10^{-19} J.

h = 4.135*10^{-15} eVs

c = 3*10^{8} m/s

λ_{1} = 300 nm = 300*10^{-9} m

λ_{2} = 640 nm = 640*10^{-9} m

Thus:

ΔE = 4.135*10^{-15} eVs*3*10^{8} m/s*(\frac{1}{300*10^{-9}m } }-\frac{1}{640*10^{-9}m })

ΔE = 4.135*10^{-15}*3*10^{8}*1.77*10^{6} eV = 2.196 eV

6 0
3 years ago
The surface rocks on Venus are similar to ______ rocks on Earth.
alexandr1967 [171]

D. granitic

*+.*+.*+.*+.

6 0
2 years ago
I need help pls help me I’m stuck
Andru [333]

Answer:

True

Explanation:

All living things are made from many cells

4 0
3 years ago
Read 2 more answers
Other questions:
  • g This plot shows the rate of the decomposition of SO2Cl2 into SO2 and Cl2 as a function of the concentration of SO2Cl2. What is
    12·1 answer
  • What is a mutual attraction between the nuclei and electrons in two different atoms called?
    9·2 answers
  • ou should have observed that Al, Fe, Pb, Sn, and Zn reacted with HCl. List these five metals in order of decreasing reactivity (
    8·1 answer
  • CAN SOMEONE HELP ME? I NEED HELP ASAP PLZ!!!! TODAY!!!!! #4-#7
    15·1 answer
  • Which human activity will most likely contribute to onzone later destruction
    12·1 answer
  • What is the most common climate in Brazil? A, B, C, or, D
    9·1 answer
  • Which statement justifies that hydrogen peroxide (H2O2) is a polar molecule?
    11·1 answer
  • 29.2 grams of methane (carbon tetrahydride), CH4, is how
    7·1 answer
  • 2) Examine the molecules below.<br> Circle the molecules that can also be classified as compounds.
    10·1 answer
  • Jennifer checked the pressure in her bike tires before school and they had a pressure of 0.890 atm. She checked the tire pressur
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!