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
Dvinal [7]
3 years ago
7

Copper wire #1 has a length L and a radius b. Copper wire #2 has a length 2L and a radius 2b. Which statement about the resistan

ce across the ends of the wires is true? The resistance of wire #1 is four times higher than that of wire #2. The resistance of wire #1 is equal to that of wire #2. The resistance of wire #1 is twice as high as that of wire #2. The resistance of wire #1 is half that of wire #2.
Physics
1 answer:
Marysya12 [62]3 years ago
5 0

Answer:

The resistance of wire #1 is twice as high as that of wire

Explanation:

For resistance of a wire the formula is as follows

R = ρ l / s where  ρ is a constant called specific resistance , l is length and s is cross sectional area . If r be the radius of cross section

R = ρ l / π r²

For first wire , putting the given values in the equation

R₁ = ρ L/ π b²

For second wire,

R₂ = ρ 2L/ π 4b²

\frac{R_1}{R_2} =\frac{4}{2}

= 2

The resistance of wire #1 is twice as high as that of wire

You might be interested in
If the acceleration of an object is zero at some instant in time, what can be said about its velocity at that time? 1. It is neg
Mkey [24]

3. It is not changing at that time

Explanation:

If the acceleration of a body is zero at some instant in time, it implies that the velocity is not changing at that point in time. Velocity is the rate of change of displacement with time.

✓Acceleration and velocity shares a very close relationship.

✓ For a body to accelerate, the velocity must change. Acceleration is defined as the rate of change of velocity with time.

✓If at any point, a body moves with constant velocity i.e the velocity does not change with time, the acceleration becomes zero.

✓ For acceleration to occur, a body must change velocity.

Learn more:

Acceleration brainly.com/question/6323625

#learnwithBrainly

5 0
4 years ago
SOH-CAH-TOA is used to solve for the ________
Misha Larkins [42]

Answer:

c. initial (x and y)

Explanation:

When a projectile is launched at a velocity with a launch angle, to solve it, we must first resolve the initial velocity into the x and y components. To do this will mean we have to treat it like a triangle due to the launch angle and the direction of the projectile.

Therefore, we will have to make use of trigonometric ratios which is also known by the mnemonic "SOH CAH TOA"

Thus, this method resolves the initial x and y velocities.

3 0
3 years ago
Cosmologists hypothesize and form theories to explain areas of the universe that are currently
topjm [15]

Answer:

True

Explanation:

However I do Believe that with the technological advancements we have made we could explore unexplored areas

6 0
4 years ago
What would happen if you didn't have chemical energy in your body? Choose the best answer.
eimsori [14]

Answer:B

Explanation:

Because chemical energy fuels your body with energy so without it u wont have enough energy to move.

8 0
3 years ago
The waste products of a nuclear fusion power plants can be best described as
I am Lyosha [343]

They can be described as small in quantity and very dangerously radioactive.

4 0
3 years ago
Read 2 more answers
Other questions:
  • I need help cause my science teacher won’t help me can some one please help me
    12·1 answer
  • How does lubrication affect Friction?
    9·1 answer
  • The passing of heat through a material while the material itself stays in place.
    11·1 answer
  • A battery operated DVD player uses 12 DV volts from AA batteries and draws a current of 3 A. Calculate the resistance.
    6·1 answer
  • What are three physical properties of a bowling ball
    9·1 answer
  • The position of a ball rolling in a straight line is given by x=2−3.6t+4.4t2, where x is in meters and t in seconds.
    5·1 answer
  • Science fiction movies that include explosion sound effects for battles in space are not scientifically correct. Why is this?
    15·1 answer
  • How much time does it take to change the momentum by 350 Ns with a 15 N force?
    14·1 answer
  • An organ pipe closed at one end is 0.76 m long. (A) Determine its fundamental frequency. (B) What are the 3rd and 5th harmonics?
    7·1 answer
  • . (a) How long can you play tennis on the 800 kJ (about 200 kcal) of energy in a candy bar? (b) Does this seem like a long time?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!