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
alexandr1967 [171]
3 years ago
5

Which of the following is an example of chemical change?

Physics
2 answers:
Maru [420]3 years ago
8 0

Answer:

c

Explanation:

all the others r physical

Svet_ta [14]3 years ago
6 0
C.
New chemicals are being formed, which indicates a chemical change.
You might be interested in
A man walks 2.6 miles east, then turns and walks 6.7 miles north. What is his resultant
Zarrin [17]

Answer:

Yes cause he walks 6.7 miles

6 0
3 years ago
How long does it take a car to cross a 20m bridge if it starts from rest and accelerates at 5 m/s^2?
polet [3.4K]

The correct answer is 2.8s

5 0
4 years ago
قوة الجذب المركزي تكون في اتجاه
pochemuha

Answer:

تكون دائمًا متعامدة مع سرعة الجسم وتكون دائمًا في اتجاه مركز انحناء المسار

Explanation:

6 0
3 years ago
Read 2 more answers
Two engineering students, John with a weight of 92 kg and Mary with a weight of 46 kg, are 30 m apart. Suppose each has a 0.04%
Hoochie [10]

Answer:

F = 6.27 x 10 ¹⁹ N

Explanation:

Given

m₁ = 92 kg, m₂ = 46 kg, % = 0.04% N = 6.022 x 10²³ Z = 18, e = 1.6 x 10 ⁻¹⁹ C, M = 0.018 kg/mol

q₁ = % * [m * N * A * e / M ]  

q₁ = 0.0004 * [ ( 92 kg * 6.022 x 10²³ * 18 * 1.6 x 10 ⁻¹⁹ ) / (0.018 kg/mol ) ]

q₁ = 3.54 x 10⁶ C

q₂ = 0.0004 * [ ( 46 kg * 6.022 x 10²³ * 18 * 1.6 x 10 ⁻¹⁹ ) / (0.018 kg/mol ) ]

q₂ = 1.773 x 10⁶ C

Now to determine the electrostatic force con use the equation

F = K * q₁ * q₂ / d²

K = 8.99 x 10 ⁹

F = 8.99 x 10 ⁹ * 3.54 x 10⁶ C * 1.773 x 10⁶ C / (30m)²

F = 6.27 x 10 ¹⁹ N

3 0
3 years ago
For all those who are in k12 I need help on this paragraph
svetoff [14.1K]

Answer:

its bad

Explanation:

4 0
3 years ago
Other questions:
  • Assume the following values: d1 = 0.880 m , d2 = 1.11 m , d3 = 0.560 m , d4 = 2.08 m , F1 = 510 N , F2 = 306 N , F3 = 501 N , F4
    9·1 answer
  • A 0.0250 kg sock spins in a dryer of radius 0.225 m once every 0.304s. how much centripetal force acts on the sock?(unit=N)
    5·1 answer
  • What is pressure? A)Shown in picture B)Shown in picture C)Shown in picture D)Shown in picture
    14·1 answer
  • What is the meaning of physics​
    9·1 answer
  • Astrology, that unlikely and vague pseudoscience, makes much of the position of the planets at the moment of one’s birth. The on
    5·1 answer
  • A particle is projected with velocity v0 directly up a slope which makes an angle α with the horizontal. Assume frictionless mot
    15·1 answer
  • A dumbbell-shaped object is composed by two equal masses, m, connected by a rod of negligible mass and length r. If I_1 is the m
    11·1 answer
  • How does creativity affect scientific work?
    13·2 answers
  • If the nuclide has a half-life of eight days, what mass of the nuclide remains in the patient at 6:00 p.m. the next day? (assume
    6·1 answer
  • a 1300-kilogram space vehicle travels at 4.8 meters per second along the level surface of mars. if the magnitude of the gravitat
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!