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
artcher [175]
3 years ago
5

The resistance of resistor is greater for:

Physics
1 answer:
Monica [59]3 years ago
8 0

Answer:

c: long and thin resistor.

Explanation:

The resistance of a resistor is given by:

R = ρ*L/A

where:

R = resistance

ρ = resistivity (depends on the material)

L =  length of the material

A = cross-sectional area of the material

We can see that the length is on the numerator, which means that if we increase the length, then the resistance is increased.

We also can see that the cross-sectional area is on the denominator, then if we increase the area (for example, with a ticker resistor) the resistance decreases.

Then if we want to maximize the resistance, we need to have a long and thin resistor, so the correct answer is c.

You might be interested in
Why do areas with low altitude have warmer air than areas with high altitude
barxatty [35]

Answer:

Air at higher altitude is under less pressure than air at lower altitude because there is less weight of air above it, so it expands (and cools), while air at lower altitude is under more pressure so it contracts (and heats up).

Explanation:

Hope that helped

6 0
2 years ago
Which travels fastest through empty space? A. electromechanical waves B. transverse waves C. longitudinal waves D. electromagnet
Nady [450]
The answer is B hope it helps:)
7 0
3 years ago
The diagram shown represents a block-and-tackle pulley system on which an effort of W Newtons supports a load of 120.0N. If the
natta225 [31]

Answer:

50 N

Explanation:

Efficiency of a machine can't be more than 1, so I assume you mean 40%.  (Remember, efficiency and mechanical advantage are not the same).

Efficiency is the ratio of work out of a system to the work in to the system.

e = Wout / Win

Work is force times distance, so:

e = (Fout × Dout) / (Fin × Din)

Rearranging:

Fin = (Fout × Dout) / (e × Din)

Fin = (Fout / e) × (Dout / Din)

Fin = (Fout / e) / (Din / Dout)

We know that e = 0.40, and Fout = 120 N.  Since there are 6 pulleys, we also know that Din/Dout = 6.

F = (120 N / 0.4) / 6

F = 50 N

5 0
3 years ago
A 1-kg mass at the earth's surface weighs about? a. 1 n. b. 5 n. c. 10 n. d. 12 n. e. none of these
ValentinkaMS [17]

A 1-kg mass at the earth's surface weighs about C. 10N

The third planet from the Sun is the Earth. It is the seventh largest in terms of size and weighs roughly 5.98 1024 kg. The inherent quality of mass is unaffected by the environment of the object or the technique employed to quantify it.

Newton's law of gravitation can be used to estimate the mass of the Earth. This is set to the fundamental formula, which reads: force (F) = mass (m) times acceleration. Gravitational acceleration (G) is equal to 9.8 m/s2, the Earth's radius is 6.37 106 m, and the gravitational constant (G) is 6.673 1011 Nm2/kg2. The Earth has a mass of 5.96 1024 kg after rearranging the equation and entering all the numbers.

To learn more about earth please visit-
brainly.com/question/14042561
#SPJ4

3 0
1 year ago
The morning of a birthday party, a balloon is filled with 8.5 L of helium (He) when the temperature is 294 kelvin. The party sta
Phoenix [80]

Explanation:

the morning of the birthday party balloon filled with the 2.5 Litre of helium

temperature is 294kelvin

the party starts at the 4 p.m.

temperature rises 305 Kelvin.

the new volume = 4 litre.

At same temperature,

P

1

V

2

=P

2

V

2

(Boyle's law)

P

1

=10atm;P

2

=1atm

V

1

=4l=V

2

=8l

But while filling balloons from cylinder when pressure in cylinder becomes 1 atm then further filling is not possible (P

1

′

=9atm)

Let n be the number of balloons that can be filled.

∴P

1

′

V

1

=n(P

1

V

1

)

9×8=n(4×1)

n=

4

9×8

=18balloons

5 0
3 years ago
Other questions:
  • The type of coal that has the highest carbon content is
    8·1 answer
  • The charge on the square plates of a parallel-plate capacitor is Q. The potential across the plates is maintained with constant
    12·1 answer
  • The strength of the electric field 0.5 m from a 6 uC charge is
    5·1 answer
  • A liquid thermometer can be used to test for fevers. When body temperature increases, the liquid inside the thermometer expands
    15·1 answer
  • Isotopes have variable numbers of electrons.<br> a. True<br> b. False
    13·1 answer
  • Is carbon a metal that can conduct electricity?
    7·1 answer
  • does Bart Allen from the young justice show like men cause some one told me that watching season 3 and is the flash a bad guy fo
    12·1 answer
  • 3. What type of scientific investigation would you use to view photosynthesis in a
    14·1 answer
  • 5. The speed of light in water is​
    12·2 answers
  • A 200 g mass is placed on the meter stick 20 cm from the fulcrum. An
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!