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
Sergeu [11.5K]
3 years ago
9

Question 23 of 33 Which phrase best describes when kinetic friction occurs? A. When two surfaces are moving relative to each oth

er B. When one object is resting on another C. When two surfaces are in contact but not moving relative to eatn other D. When balanced forces are acting on an object​
Physics
1 answer:
Helga [31]3 years ago
3 0

Answer:

A. When two surfaces are moving relative to each other.

Explanation:

It is also know as dynamic friction

You might be interested in
the apparent weight of a body wholly immersed in water is 32N and its weight in 96N and calculate volume of the body
ArbitrLikvidat [17]

Answer:

0.0065 m³

Explanation:

Apparent weight = weight − buoyancy

32 N = 96 N − (1000 kg/m³) (9.8 m/s²) V

V = 0.0065 m³

3 0
3 years ago
PLEASE ASAP ILL GIVE BRAINLIEST.
Fiesta28 [93]
Acceleration no longer exist as the car stops.
5 0
3 years ago
Find the electron and hole mobilities, and the resistivity of intrinsic silicon at 300K. Is intrinsic silicon a semiconductor
tino4ka555 [31]

Answer:

Resistivity = 231.481 K Ohm

Yes, Intrinsic Silicon is the semiconductor.

Explanation:

Solution:

At 300K:

Let suppose mobility of electron in intrinsic semiconductor = M_{e}

Mobility of electron in intrinsic semiconductor is:

M_{e}  = 1300 cm^{2}/volt.sec

Let suppose mobility of hole in intrinsic semiconductor = M_{h}

M_{h} = 500 cm^{2}/volt.sec

We know that, intrinsic silicon semiconductor has equal number of holes and electrons. So,

At 300 K

Intrinsic Carrier Concentration = 1.5 x 10^{10}/cm^{3} = C

And,

Conductivity of intrinsic Silicon is:

σ = C x (M_{h} + M_{e}) e

e = 1.6 x 10^{-19} C

So, plugging in the values, we get:

σ = C x (M_{h} + M_{e}) e

σ = 1.5 x 10^{10} x (500 + 1300) x 1.6 x 10^{-19}

σ = 4.32 x 10^{-6}

So, now we can find the resistivity.

Resistivity = 1/σ

Resistivity = 1/ 4.32 x 10^{-6}

Resistivity = 231.481 K Ohm

Yes, Intrinsic Silicon is the semiconductor.

7 0
3 years ago
What is an example of velocity?What is an example of velocity?
givi [52]
Speed with direction
5 0
3 years ago
Read 2 more answers
PLS ANSWER FAST WILL GIVE BRAINLEST!!!
Kipish [7]

Answer:

2 Newtons

Explanation:

F = ma

Therefore, your mass would be 1kg and your acceleration would be 2m/s/s

Plug the numbers into the equation:

(1kg)(2m/s/s)

which will equal

2 Newtons

8 0
3 years ago
Other questions:
  • A parallel-plate capacitor is charged by connecting it across the terminals of a battery. If the battery remains connected and t
    15·1 answer
  • the force between a planet and a spacecraft is 1 million newtons. whst will the force be iv the spacecraft moves to halfg its or
    11·1 answer
  • Problems with solar energy include _____.
    13·2 answers
  • Positively charged ions are surrounded by freely moving electrons in
    8·1 answer
  • A hoop of mass 2 kg, radius 0.5 m is rotating about its center with an angular speed of 3 rad's. A force of 10N is applied tange
    8·1 answer
  • What tide occurs when when the sun, earth, and the moon are nearly in a line
    9·2 answers
  • In which direction does magnetic field in the center of the coil point?
    8·2 answers
  • "In a Young's double-slit experiment, the slit separation is doubled. To maintain the same fringe spacing on the screen, the scr
    8·1 answer
  • What is one disadvantage of using a ramp?
    7·1 answer
  • What type of lens is a flat lens?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!