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
Vsevolod [243]
2 years ago
9

What are factor affecting resistance?​

Physics
1 answer:
Keith_Richards [23]2 years ago
4 0
Material, eg copper, has lower resistance than steel. length - longer wires have greater resistance. thickness - smaller diameter wires have greater resistance. temperature - heating a wire increases its resistance.
You might be interested in
A cart of mass M = 2.40 kg can roll without friction on a level track. A light string draped over a light, frictionless pulley c
sergiy2304 [10]

Answer:

Part a)

a_{hanger} = g - \frac{T}{m}

Part b)

a_{cart} = \frac{T}{M}

Part c)

a = \frac{mg}{M + m}

Part d)

a = 1.35 m/s^2

Explanation:

Part a)

For hanger we know that it will have tension force upwards while it has downwards its weight so we will have

mg - T = ma

so we have

a_{hanger} = g - \frac{T}{m}

Part b)

now for car that is rolling on the floor the net force is given as

F = Ma

T = Ma

a_{cart} = \frac{T}{M}

Part c)

now we know that the cart and the hanger both are connected to each other

so they must have same acceleration

so we will have

T = Ma

mg - Ma = ma

a = \frac{mg}{M + m}

Part d)

now we know that

M = 2.40 kg

m = 0.50 kg

so we will have

a = \frac{0.50(9.81)}{2.40 + 0.50}

a = 1.35 m/s^2

6 0
3 years ago
A loudspeaker in a parked car is producing sound whose frequency is 20950 Hz. A healthy young person with normal hearing is stan
rusak2 [61]

Answer:

359 m/s

Explanation:

Highest frequency a person can hear is 20,000Hz.

f = c × λ

Frequency = Wave speed × Wavelength

Wavelength = 20,000 ÷ 343 = 58.31m

Wavespeed = Frequency ÷ Wavelength

c = 20,950 ÷ 58.31 = 359.3 m/s

= 359 m/s (3 s.f.)

3 0
3 years ago
Is the substance an atom or a molecule?
ANTONII [103]

Answer:

A pair of oxygen atoms is a molecule of oxygen. A molecule is the smallest particle of a substance that exists independently. Molecules of most elements are made up of only one of atom of that element. Oxygen, along with nitrogen, hydrogen, and chlorine are made up of two atoms.

Explanation:

6 0
2 years ago
Name each type of symbiosis and explain how the two species are affected
disa [49]
Frogs
snakes if there food chain is mesesed up it dont work no more

7 0
3 years ago
How do I delete a question on here
EastWind [94]
I don’t think you can :((
7 0
3 years ago
Read 2 more answers
Other questions:
  • What is the maximum kinetic energy k0 of the photoelectrons when light of wavelength 350 nm falls on the same surface?
    12·1 answer
  • Which particle of the atom has a positive charge? A. proton B. electron C. nucleus D. neutron
    12·1 answer
  • An individual electron can be thought of as a spinning sphere of negative charge. A charged spinning sphere will generate a magn
    7·1 answer
  • Which of the following is the discharge build up of excess electrical charge? electrical charge current electricity electron sta
    11·2 answers
  • What is the relationship between potential and kinetic energy in chemical reactions?
    14·1 answer
  • Twenty is the _________________ of potassium.
    5·2 answers
  • WILL AWARD BRAINLLIEST!!!!
    8·2 answers
  • How high has a 45 g golf ball been driven if it has a potential energy of 2.06 J?
    7·2 answers
  • An airliner flys 950 miles from S.B. to Denver at 500 mph. How long does it take to fly to
    5·1 answer
  • Below is a physics question
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!