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
rjkz [21]
3 years ago
13

When rust forms on a piece of iron, what evidence do you have that a chemical reaction has taken place?

Physics
1 answer:
vfiekz [6]3 years ago
6 0
The rust is the product and evidence
You might be interested in
two skateboarders of mass 50 kg and 60 kg push each other with force 70N.what is the acceleration of each skaters
Free_Kalibri [48]

Answer:

0 m/s²

Explanation:

Since each skater pushes the other with a force of 70 N, according to Newton's third law, there is an equal reaction and thus the other pushes back with a force of 70 N in the other direction, so we have forces of +70N and -70 N respectively. So, the net force on each skateboarder is F = + 70 N + (-70 N) = + 70 N - 70 N = 0 N.

Since force, F = ma where a = acceleration and m = mass,

a = F/m.

So, since for each skater, F = 0N,

a = 0 N/m

= 0 m/s²

So, the acceleration of each skater is 0 m/s²

5 0
3 years ago
Which atoms have the highest electronegativity?
Ronch [10]

Answer:

Note that there is little variation among the transition metals. Electronegativities generally decrease from top to bottom within a group due to the larger atomic size. Of the main group elements, fluorine has the highest electronegativity (EN = 4.0) and cesium the lowest (EN = 0.79).

3 0
3 years ago
Calculate the power of convex lens of focal length 20cm​
maxonik [38]

D = 1/f, where D is the power in diopters and f is the focal length in meters.

D=1/20

<u>D=0.05</u>

6 0
4 years ago
Technician A says that the intake and exhaust manifolds have to be removed before removing the engine from the vehicle. Technici
Amiraneli [1.4K]

Answer: Technician A is correct

Explanation:

The intake manifold is the compactment that all fuel and air supply to the cylinders. It's connected to the engine so it has to be disconnected while the exhaust manifold receives all the exhaust gases from the cylinders and releases the gas through a single or double exhaust gases outlet.

5 0
3 years ago
(a) State Hook's law. [2]
murzikaleks [220]
Hookes law state that provided that the elastic limit is not exceeded, the extension is directly proportional to the force
3 0
3 years ago
Other questions:
  • How much current will a 500 W vacuum cleaner draw if it has a resistance of 30Ω?
    11·1 answer
  • An electron in the n = 6 level of the hydrogen atom relaxes to a lower energy level, emitting light of λ = 93.8 nm .find the pri
    14·2 answers
  • Suppose that on a hot and sticky afternoon in the spring, a tornado passes over the high school. If the air pressure in the lab
    14·1 answer
  • We normally write our address as a street number in a city or town, which is in a state or province, followed by a country. How
    9·1 answer
  • Two capacitors are identical, except that one is empty and theother is filled with a dielectric (κ = 3.60). The empty capacitor
    5·1 answer
  • A battery connected across two parallel metal plates. There is a uniform E-field between the plates, and a positive charge exper
    8·1 answer
  • An object is moved 29 meters with a force of 289 N. what is the work done
    12·1 answer
  • The first law of motion is also called as law _ fill up the blanks ​
    10·1 answer
  • A car advertisement states that a certain car can accelerate from rest to 70 km/h in 7 seconds. Find the car’s acceleration. Use
    14·1 answer
  • Use the picture to answer the question.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!