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
erik [133]
3 years ago
14

Consider two copper wires with the same cross-sectional area. Wire A is twice as long as wire B. How do the resistivities and re

sistances of the two wires compare? Check all that apply. Check all that apply. Wire B has twice the resistivity of wire A. Wire A has twice the resistance of wire B. Wire A and wire B have the same resistance. Wire A has twice the resistivity of wire B. Wire B has twice the resistance of wire A. Wire A and wire B have the same resistivity. SubmitRequest Answer Provide Feedback Next
Physics
1 answer:
elixir [45]3 years ago
8 0
3 is your correct answer
You might be interested in
Which of the following is true about a combustion reaction?
Ksenya-84 [330]

Answer:

b

Explanation:

this is because inoder. for combustion or burning to take place oxygen must be available

7 0
3 years ago
If it is spring in the north.Hemisphere,it is blank in the south.Hemisphere
stira [4]
Spring begins on September 1 and ends on November 30 in the Southern Hemisphere; summer begins on December 1 and ends on February 28 (February 29 in a Leap Year); fall (autumn) begins on March 1 and ends on May 31 in the Northern Hemisphere; and.
7 0
3 years ago
Web Spiders and Oscillations All spiders have special organs that make them exquisitely sensitive to vibrations. Web spiders det
Leokris [45]

Answer:

0.037 N/m

Explanation:

The web acts as a spring, so it obeys Hook's law:

F=kx (1)

where

F is the force exerted on the web

k is the spring constant

x is the stretching/compression of the web

In this problem, we have:

- The mass of the fly is m=15 mg=15\cdot 10^{-6} kg

- The force exerted on the web is the weight of the fly, so:

F=mg=(15\cdot 10^{-6}kg)(9.81 m/s^2)=1.47\cdot 10^{-4}N

- The stretching of the web is

x=4.0 mm=0.004 m

So if we solve eq.(1) for k, we find the spring constant:

k=\frac{F}{x}=\frac{1.47\cdot 10^{-4} N}{0.004 m}=0.037 N/m

3 0
3 years ago
A 1-kg rock is suspended from the tip of a horizontal meterstick at the 0-cm mark so that the meterstick barely balances like a
tigry1 [53]

Explanation:

Given that,

Mass if the rock, m = 1 kg

It is  suspended from the tip of a horizontal meter stick at the 0-cm mark so that the meter stick barely balances like a seesaw when its fulcrum is at the 12.5-cm mark.

We need to find the mass of the meter stick. The force acting by the stone is

F = 1 × 9.8 = 9.8 N

Let W be the weight of the meter stick. If the net torque is zero on the stick then the stick does not move and it remains in equilibrium condition. So, taking torque about the pivot.

9.8\times 12.5=W\times (50-12.5)\\\\W=\dfrac{9.8\times 12.5}{37.5}

W = 3.266 N

The mass of the meters stick is :

m=\dfrac{W}{g}\\\\m=\dfrac{3.266}{9.81}\\\\m=0.333\ kg

So, the mass of the meter stick is 0.333 kg.

5 0
3 years ago
Two students push on a 5-kg cart from opposite sides
sweet-ann [11.9K]

Answer:

nothing will happen the cart will be broken or as it is

4 0
3 years ago
Read 2 more answers
Other questions:
  • A 42.0-kg parachutist is moving straight downward with a speed of 3.85 m/s. (a) If the parachutist comes to rest with constant a
    14·1 answer
  • During World War I, Germany used a "Big Bertha" cannon to hurl shells into Paris 30 miles away. This gun also had a long barrel.
    14·1 answer
  • A train is traveling away from you at 120 km/h. it blows its whistle, and you hear a tone of 0.400 kHz. Take the speed of sound
    12·1 answer
  • A bike accelerates uniformly from rest to a speed of 8.20 m/s over a distance of 45.6 m. Determine the
    7·1 answer
  • A simple pendulum makes 120 complete oscillations in 3.00 min at a location where g 5 9.80 m/s2. Find (a) the period of the pend
    15·1 answer
  • Warm air and water rise because...
    6·2 answers
  • ..................................<br>.
    15·1 answer
  • A ball is kicked from the origin with an initial speed of 10 = 25.0 /, at an angle with
    15·1 answer
  • Playing soccer on a beach will require more effort because the sand causes a great deal of _______ to the ball.
    12·2 answers
  • Which of these is a result of gravitational lensing?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!