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
Misha Larkins [42]
2 years ago
8

What three characteristics do geologist look for when observing a rock sample

Physics
2 answers:
lord [1]2 years ago
5 0
Texture hardness and color
lara [203]2 years ago
5 0
The hardness of the rocks texture and the color of the rock.
You might be interested in
An oceanographer is studying how the ion concentration in seawater depends on depth. She makes a measurement by lowering into th
Black_prince [1.1K]

Answer:

a)  R = ρ₀ L /π(r_b² - R_a²) , b)  ρ₀ = V / I    π (r_b² - R_a²) / L

Explanation:

a) The resistance of a material is given by

          R = ρ l / A

where ρ is the resistivity, l is the length and A is the area

the length is l = L and the resistivity is ρ = ρ₀

the area is the area of ​​the cylindrical shell

           A = π r_b² - π r_a²

           A = π (r_b² - r_a²)

we substitute

         R = ρ₀ L /π(r_b² - R_a²)

b) The potential difference is related to current and resistance by ohm's law

         V = i R

         

we subsist the expression of resistance

          V = I ρ₀ L /π (r_b² - R_a²)

           ρ₀ = V / I    π (r_b² - R_a²) / L

6 0
2 years ago
How does creativity affect scientific work?
deff fn [24]
Science is an art, u cant make art without creativity
8 0
2 years ago
Read 2 more answers
A car, starting from the origin, travels
sweet [91]

Answer:

The net displacement of the car is 3 km West

Explanation:

Please see the attached drawing to understand the car's trajectory: First in the East direction for 4 km (indicated by the green arrow that starts at the origin (zero), and stops at position 4 on the right (East).

Then from that position, it moves back towards the West going over its initial path, it goes through the origin and continues for 3 more km completing a moving to the West a total of 7 km. This is indicated in the drawing with an orange trace that end in position 3 to the left (West) of zero.

So, its NET displacement considered from the point of departure (origin at zero) to the final point where the trip ended, is 3 km to the west.

8 0
2 years ago
Read 2 more answers
Xavier is roller skating at 14 km/h and tosses a set of keys forward on the ground at 8 km/h. The speed of the keys relative to
Arturiano [62]

Answer:

22 km/h

Explanation:

Given that,

Speed of Xavier, v = 14 km/h

He tosses a set of keys forward on the ground at 8 km/h, v' = 8 km/h

We need to find the speed of the keys relative to the ground. Let it is V.

As both Xavier and the keys are moving in same diretion. The relative speed wrt ground is given by :

V = v+v'

V= 14 + 8

V = 22 km/h

So, the speed of the keys relative to the ground is 22 km/h.

4 0
2 years ago
In an electric motor _____energy is transformed into_____energy?
irina1246 [14]

Answer:

mechanical energy

Explanation:

In an electric motor the electrical energy is converted into mechanical energy. Almost every mechanical movement that we see around us is accomplished by an electric motor. Electric machines are a means of converting energy. Motors take electrical energy and produce mechanical energy.

3 0
2 years ago
Other questions:
  • Describe the basic internal structure of Mercury.
    13·1 answer
  • A cubical shell with edges of length a is positioned so that two adjacent sides of one face are coincident with the +x and +y ax
    7·1 answer
  • When a 60-watt light bulb is connected to a 120-volt source the current in the light bulb is?
    15·1 answer
  • If a stone dropped into a well reaches the water's surface after 3.0 seconds, how far did the stone drop before hitting the wate
    10·2 answers
  • The angle at which a wave strikes a surface is ___ the angle at which the wave is reflected.
    12·1 answer
  • ________ are organisms that are able to convert the sun's energy into usable energy.
    12·1 answer
  • A machine part is undergoing SHM with a frequency of 5.00Hz and amplitude 1.80cm . How long does it take the part to gofrom x=0
    13·1 answer
  • Through which media did sound waves travel the fastest and the slowest?
    8·1 answer
  • You are playing hockey with friends on a very large frozen pond. The hockey puck is at your feet motionless. You take a slap-sho
    12·1 answer
  • What happens to a circuit's resistance (R), voltage (V), and current (1) when
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!