What type of force are you exerting when you lie on a bed

A long wire carrying a 5.8 A current perpendicular to the xy-plane intersects the x-axis at x=−2.3cm. A second, parallel wire ca

adoni [48]

Answer:

a) v r = 0.7318 cm , b) r = 7.23 cm

Explanation:

The magnetic field generated by a wire carrying a current can be found with Ampere's law

∫ B. ds = μ₀ I

the length of a surface circulates around the wire is

s = 2π r

where r is the point of interest of the calculation of the magnetic field

B = μ₀ I / 2π r

In this exercise we have two wires, write the equation of the magnetic field of each one

wire 1 I = 5.8 A

B₁ = μ₀ 5,8 / 2π r₁

wire 2 I = 3.0 A

B₂ = μ₀ 3/2π r₂

the direction of the field is given by the rule of the right hand, the thumb indicates the direction of the current and the other fingers the direction of the magnetic field

Let's apply these expressions to our case

a) the two streams go in the same direction

using the right hand rule for each wire we see that between the two wires the magnetic fields have opposite directions so there is some point where the total value is zero

B₁ - B₂ = 0

B₁ = B₂

μ₀ 5,8 / 2π r₁ = μ₀ 3 / 2π r₂

5.8 / r₁ = 3 / r₂

5.8 r₂ = 3r₁

the value of r is measured from each wire, therefore

r₁ = 2.3 + r

r₂ = 2.3 -r

we substitute

5.8 (2.3 - r) = 3 (2.3 + r)

r (3 + 5.8) = 2.3 (5.8 - 3)

r = 2.3 2.8 / 8.8

r = 0.7318 cm

b) the two currents have directional opposite

with the right hand rule in the field you have opposite directions outside the wires

suppose it is zero on the right side where the wire with the lowest current is

B₁ = B₂

5.8 / r₁ = 3 / r₂

5.8 r₂ = 3 r₁

r₁ = 2.3 + r

r₂ = r - 2.3

5.8 (r - 2.3) = 3 (2.3 + r)

r (5.8 -3) = 2.3 (3 + 5.8)

r = 2.3 8.8 / 2.8

r = 7.23 cm

8 0

3 years ago

Research paper on tsunamis (4-5 paragraphs minimum) 3) Tsunamis how they work….evacuation routes, structures built in oceans to

elena55 [62]

A must be at least 4 full paragraphs probably will need more

6 0

3 years ago

The fulcrum is the

olga_2 [115]

Answer:

point of support on which a lever rotates.

Explanation:

The fulcrum is the point of support on which a lever rotates. Fulcrum is a pivotal part of simple machines.

The fulcrum provides the platform for a lever to torque.

The force that opposes motion by the applied force is termed the frictional force.
Friction is a force that opposes motion.
The stored energy of an object is its potential energy.
The potential energy is the energy due to the position of a body.
The distance an object moves when doing work is termed its displacement.

6 0

3 years ago

An automobile is traveling away from Jill and towards Jack. The horn is honking, producing a sound wave.

wlad13 [49]

Answer:

a. The sound will travel at the speed to both Jill and Jack

b. Jack

Explanation:

a. Doppler effect describes how the frequency of a sound wave changes with regards to an observer that has relative motion to the sound source;

The Doppler effect is given by the following formula;

For a sound that is moving away, as observed by Jill, we have;

$f' = \dfrac{(v - v_0)}{(v + v_s)} \cdot f = \dfrac{v }{(v + v_s)} \cdot f$

For approaching sound, as observed by Jack, we have;

$f' = \dfrac{(v + v_0)}{(v - v_s)} \cdot f = \dfrac{v }{(v - v_s)} \cdot f$

Where;

f = The sound wave's actual frequency

f' = The frequency of the moving sound to the observer

v = The speed of the sound wave

v₀ = The observer's velocity = 0

$v_s$ = The velocity of the source (the automobile honking) of the sound wave

From the above equation, we have that the speed of sound, 'v', is the same to both the source, and the observer although the frequency, and therefore, the wavelength of the sound alternatively increases or decreases

b. From the Doppler effect equation, the person who will hear the highest frequency is given by the formula for the frequency when the sound is approaching the observer, which has the lower denominator

Therefore, given that the automobile is travelling towards Jack, jack will hear the higher frequency

5 0

3 years ago

A brick is dropped with zero initial speed from the roof of a building and strikes the ground in 1.90 s. How tall is the buildin

irinina [24]

Answer:

17.69 m

Explanation:

The time it takes the brick to strike the ground is 1.90 seconds.

We can apply one of Newton's equation of linear motion to find the height of the building:

$s = ut + 0.5gt^2$

where s = distance (in this case height)

u = initial velocity = 0 m/s

t = time = 1.90 s

g = acceleration due to gravity = 9.8 m/s^2

Therefore:

s = (0 * 1.9) + (0.5 * 9.8 * 1.9 * 1.9)

s = 0 + 17.68

s = 17.69 m

The height of the building is 17.69 m.

6 0

4 years ago