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
liberstina [14]
3 years ago
11

Glass has a hardness that is in the middle of the hardness scale. What is the hardness of Glass?

Physics
2 answers:
sweet [91]3 years ago
8 0

Answer: 5.5

Explanation:

Let's start by explaining that hardness is a property that materials have related to the opposition or resistance they offer to alterations such as penetration, abrasion, scratching, cutting, and permanent deformations, among others.

In this context, several hardness scales have been developed to catalog the materials (specifically minerals), being the Mohs scale  the best known. This scale, proposed by the German geologist Friedrich Mohs in 1825, consists of a ratio of ten minerals numbered in increasing order by hardness, from least to greatest.

This is how the scale starts at 1 with the talc (considered the softest material) and ends at 10 with the diamond as the hardest.

Now, if we are told that the glass is in the middle of the hardness scale that goes from 1 to 10, logically its value will be 5 (volcanic glass). However, according to the scale, the glass is at 5.5.

joja [24]3 years ago
8 0

Answer:

5.5

Explanation:

You might be interested in
Female scientist who came to america to study starts at harvard
krok68 [10]
Is that a question? If it is not what its the question?
7 0
3 years ago
Which layer of the earths atmosphere contains the ozone layer?
Burka [1]
The answer to that will be the Troposphere.
8 0
3 years ago
Read 2 more answers
A small ball of charge Q and mass m has a velocity v at infinity. It collides head-on with a ball of the same charge and mass wh
Hatshy [7]

Answer:

Explanation:

Kinetic energy of ball in motion = 1/2 m v² . Potential energy = 0

Let the minimum distance between the balls be d  on collision.

Electric potential energy at that time= k Q²/d , Here kinetic energy is converted into potential energy . So

1/2 m v² = kQ²/d

d =2 k Q² / mv²,= 18 x 10⁹ x Q²/ m v².

8 0
3 years ago
If a hockey stick exerts a force of 40 N on a 0.5-kg puck, what will the
antoniya [11.8K]

Answer:

  B.  80 m/s²

Explanation:

F = ma

a = F/m = (40 N)/(0.5 kg) = 80 m/s²

3 0
3 years ago
A 77.0 kg firefighter climbs a flight of stairs 8.0 m high. how much work is required? 0 incorrect: your answer is incorrect. j
Alex73 [517]
<span>6160 joules

    to lift 1 newton 1 metre requires 1 joule
 there are 10 newtons in one kilo

    so 77(kg) x 8 (metres) x 10 (newtons/kilo) = 6160 joules</span>
5 0
3 years ago
Other questions:
  • Two identical objects are moving directly toward one another at the same speed v. ~v −~v m m What is the total kinetic energy of
    15·2 answers
  • a 59kg physics student jumps off the back of her laser sailboat (42kg). after she jumps the laser is found to be travelling at 1
    12·1 answer
  • Vector 1 has a magnitude of 24 m and is pointed to the west. Vector 2 has a magnitude of 11 and is pointed to the north. What is
    12·2 answers
  • An industrial firm has two electrical loads connected in parallel across the power source. Power is supplied to the firm at 4000
    8·1 answer
  • How far away are the Stars?
    15·1 answer
  • Cho q1= 8.10 mũ -8C ; q2 = -8.10 mũ -8C . Đặt tại 2 điểm A và B cách nhau 6cm trong không khí . Xác định lực điện dung dịch lên
    11·1 answer
  • Magnetic dipole X is fixed and magnetic dipole Y is free to move. Dipole Y will initially:
    8·1 answer
  • Hey I need help w/ this pic below ASAP!!!<br> Pls will mark brainliest:) Not joking lol
    5·2 answers
  • A 15. 0 cm object is 12. 0 cm from a convex mirror that has a focal length of -6. 0 cm. What is the height of the image produced
    12·1 answer
  • (7)Figure 4 shows three charges: Q₁, Q₂ and Q3 . Determine the net force (Fnet) acting on Q3. (Hint: Draw a free body diagram of
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!