Conductor B is blue, conductor A is red

A. Conductor A has a lower resistance
B. Conductor B has a lower resistance
C. Both conductors have the SAME amount of resistance
D. There is not enough information provided to answer this question because resistance has no relationship to current and voltage

Answer and explanation please!​

Answer:

• the amount of work needed to move a unit charge from a reference point to a specific point against an electric field.

The momentum of the red cart before the collision is 0.2 kgm/s and the blue cart is 0.

The momentum of the red cart after the collision is 0.05 kgm/s and the blue cart is 0.15 kgm/s.

The change in momentum of the system of the carts is 0.

The momentum of the carts before the collision is calculated as follows;

P(red) = 0.5 kg x 0.4 m/s = 0.2 kgm/s

P(blue) = 1.5 x 0 = 0

The momentum of the carts after the collision is calculated as follows;

P(red) = 0.5 x 0.1 = 0.05 kgm/s

P(blue) = 1.5 0.1 = 0.15 kgm/s

[tex]\Delta P = P_f - P_i[/tex]

ΔP = (0.05 + 0.15) - (0.2)

ΔP = 0

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A 200 kg snowmobile having the same momentum will travel at 45 m/s.

Momentum of an object is the product of mass and speed of an object.

P = mv

where;

m₁v₁ = m₂v₂

v₂ = m₁v₁/m₂

v₂ = (300 x 30)/200

v₂ = 45 m/s

Thus, a 200 kg snowmobile having the same momentum will travel at 45 m/s.

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Answer:

1.3823 rad/s

20.7345 m/s

28.66129935 m/s²

2006.29095 N radially outward

Explanation:

r = Radius = 15 m

m = Mass of person = 70 kg

g = Acceleration due to gravity = 9.81 m/s²

Angular velocity is given by

Angular velocity is 1.3823 rad/s

Linear velocity is given by

The linear velocity is 20.7345 m/s

Centripetal acceleration is given by

The centripetal acceleration is 28.66129935 m/s²

Acceleration in terms of g

Centripetal force is given by

The centripetal force is 2006.29095 N radially outward

The torque will be experienced when the centrifuge is speeding up of slowing down i.e., when it is accelerating and decelerating.

Answer:

Acceleration is the rate of change of velocity.  If an object is changing its velocity, its speed, or changing its direction, then it is said to be accelerating.

Explanation:

when you change directions or speed up you are accelerating (or decelerating)  and when you change directions or speed its called velocity.

Answer:

(3) Potent energy per unit volume

Explanation:

The kinetic energy, pressure and flow speed all change with cross-section area so they are not constant over time. Because the flow is in a horizontal pipe, the height never changes so (3) Potent energy per unit volume is constant.

Answer:

Option C

Explanation:

Mark the line horizontal pipe.

Answer:

d

Explanation:

because it also depends upon accleration acting upon it

People find this acceptable because it is common to use mass and weight as synonyms even if they are not.

In physics, mass refers to the amount of matter, due to this, mass is often measured in:

On the other hand, weight considers gravity or the force gravity exerts on an object, and due to this it is measured in newtons.

Even if weight and mass are different, people often use the word "weight" to refer to the mass, that is why statements such as the above are acceptable. However, if you are a physicist this would be incorrect.

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Answer:

A magnet is used in a compass to show the direction.

Magnets are used in medical equipment.

Powerful magnets are used to lift objects

they are used in refrigerator, televisions, earphones etc

Answer:

1. they are used in medical equipment

2. they are used in dynamos

3. they are used in generators and motors

4. powerful magnets are used to lift heavy objects

5. they are used to prevent corrosion in a water heater

Answer:

In a collision, the velocity change is always computed by subtracting the initial velocity value from the final velocity value. If an object is moving in one direction before a collision and rebounds or somehow changes direction, then its velocity after the collision has the opposite direction as before.

Answer:

Homeostasis maintains optimal conditions for enzyme action throughout the body, as well as all cell functions. It is the maintenance of a constant internal environment despite changes in internal and external conditions.

Answer:

2 electrons

Explanation:

carbon has 6 and only needs 2 to get to 8

[tex]\\ \rm\bull\rightarrowtail Displacement=Velocity\times Time[/tex]

[tex]\\ \rm\bull\rightarrowtail Displacement=8(14)[/tex]

[tex]\\ \rm\bull\rightarrowtail Displacement =112m[/tex]

Answer:

The laws of thermodynamics define a group of physical quantities, such as temperature, energy, and entropy, that characterize thermodynamic systems in thermodynamic equilibrium.

Answer:

option B

Explanation:

given,

Satellite B has an orbital radius nine times that of satellite A.

R' = 9 R

now, orbital velocity of the satellite A

........(1)

now, orbital velocity of satellite B

from equation 1

hence, the correct answer is option B

Answer:

Global winds occur in belts around the globe.

Explanation:

This is because they blow over a limited area. They are influenced by local geography, such as nearness to an ocean.

Answer: a. 1200J b. 600W c. 20m/s

Explanation: W = Fxcos

F = 300, x=4, direction of force is = to direction of object so cos(0) = 1

a) 300*4 = 1200

b) P = W/t

1200/2 = 600W

c) vf^2 = vi^2 + 2ax

vi = 0, x = 4, a= 300/6

vf^2 = 2(50)(4)

vf^2 = 400

vf= 20m/s

Answer:

too hard bro others will answer it

Explanation:

sry

Answer:

As per Given Information

Angle on which the stone thrown ,theta = 45°

Velocity ,u = 10m/s

Acceleration due to gravity ,g is 10m/s²

We have to find the "Range of Projectile "

Range of projectile is denoted by R .

Using Formulae

[tex]\\ \bigstar{\boxed{\pink{\bf{R = \frac{ {u}^{2}sin2 \theta }{g} }}}} \\ \\ [/tex]

On putting the value we get

[tex] \sf\dashrightarrow \: R\: = \frac{ {10}^{2} \times sin(2 \times 45) }{10} \\ \\ \sf\dashrightarrow \: R = \frac{100 \times sin90 {}^{ \circ} } {10} \\ \\ \sf\dashrightarrow \: R \: = \frac{100 \times 1}{10} \\ \\ \sf\dashrightarrow \: R \: = \frac{100}{10} \\ \\ \sf\dashrightarrow \: R = \cancel \frac{100}{10} \\ \\ \sf\dashrightarrow \: R = 10m[/tex]

So, the range of projectile is 10m.

A diffraction grating is a type of optical instrument obtained with a continuous pattern. The number of lines per mm in the diffraction grating is 326.

A diffraction grating is a type of optical instrument obtained with a continuous pattern. The pattern of the diffracted light by a grating depends on the structure and number of elements present.

The given data in the problem is

[tex]\theta[/tex] is the angle formed between the path of the incident light and the diffracted light = 9. 2°

λ is the wavelength of the light=490nm=4.9

N is the number of lines per mm in the diffraction grating=?

n is ordered = 1

The formula for diffraction grating will be

[tex]\rm n\lambda=dsin\theta\\\\ \rm d=\frac {n \lambda}{sin\theta} \\\\ \rm d=\frac {1\times4.90\times10^{-7}}{sin9.2^0} \\\\\rm d=3.06\times10^{-6}m=3.06\times10^{-3}mm[/tex]

The number of lines per mm is the inverse of the distance between grating in mm.

[tex]\rm N=\frac{1}{d}[/tex]

[tex]\rm N=\frac{1}{3.06\times10^-3}\\\\\rm N=326.8/mm[/tex]

Hence the number of lines per mm in the diffraction grating is 326.

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Answer:

326

Explanation:

Answer:

a) a = g / 3

b) x (3.0) = 14.7 m

c) m (3.0) = 29.4 g

Explanation:

Given:-

- The following differential equation for (x) the distance a rain drop has fallen has the form:

- Where,                v = Speed of the raindrop

- Proposed solution to given ODE:

                            v = a*t

Where,                  a = acceleration of raindrop

Find:-

(a) Using the proposed solution for v find the acceleration a.

(b) Find the distance the raindrop has fallen in t = 3.00 s.

(c) Given that k = 2.00 g/m, find the mass of the raindrop at t = 3.00 s.

Solution:-

- We know that acceleration (a) is the first derivative of velocity (v):

                            a = dv / dt   ... Eq 1

- Similarly, we know that velocity (v) is the first derivative of displacement (x):

                           v = dx / dt  , v = a*t ... proposed solution (Eq 2)

                            v .dt = dx = a*t . dt

- integrate both sides:

                            ∫a*t . dt = ∫dt

                            x = 0.5*a*t^2  ... Eq 3

- Substitute Eq1 , 2 , 3 into the given ODE:

                           0.5*a*t^2*g = 0.5*a^2 t^2 + a^2 t^2

                                               = 1.5 a^2 t^2

                           a = g / 3

- Using the acceleration of raindrop (a) and t = 3.00 second and plug into Eq 3:

                          x (t) = 0.5*a*t^2

                          x (t = 3.0) = 0.5*9.81*3^2 / 3

                          x (3.0) = 14.7 m  

- Using the relation of mass given, and k = 2.00 g/m, determine the mass of raindrop at time t = 3.0 s:

                          m (t) = k*x (t)

                          m (3.0) = 2.00*x(3.0)

                          m (3.0) = 2.00*14.7

                          m (3.0) = 29.4 g

Answer:

0.2 km/min east

Explanation:

Walt ran 5 kilometers in 25 min, going eastward. What was his average velocity?

m a t h

Answer:

Let the momentum of the orange train be positive

P = 100 * 8 - 200 * 1 = 600 kg-m/s

P(final) = 600 kg-m/s

P / M = 600 kg-m/sec / 300 kg = 2 m/s    

Answer-B     final momentum = 600 kg-m/s

The force on the charge is 1.1×10⁻⁸ N.

Force can be defined as the product of the mass of a body and its acceleration

To calculate the force on the charge, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute the given values into equation 1

Hence, the force on the charge is 1.1×10⁻⁸ N.

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The waves that are related to both electricity and magnetism are known as (EM) waves .electromagnetic Waves' this line is about a different topic than the rest of Shondra’s notes.

The waves that are related to both electricity and magnetism are known as electromagnetic (EM) waves. These waves are made up of time-varying electric and magnetic fields that travel over space.

These waves, which are related to electricity and magnetism, would undoubtedly spread in space. The waves that are related to both electricity and magnetism are known as electromagnetic (EM) waves.

These waves are made up of time-varying electric and magnetic fields that travel over space. These waves, which are related to electricity and magnetism, would undoubtedly spread in space.

Hence option 1 is right because the 'Electromagnetic Waves' these line is about a different topic than the rest of Shondra’s notes.

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Answer:

more turns in a coil will make stronger magnet field and reversed direction of the current will change the pole of the magnet

Explanation:

by winding a coil , it concentrates magnetic field of the current in smaller space so more turns of coil mean stonger magnetic field.

explanation for change of direction of current is in pic.

i hope it helps.

More turns in a coil will make stronger magnet field and reversed direction of the current will change the pole of the magnet.

By winding a coil , it concentrates magnetic field of the current in smaller space so more turns of coil mean stonger magnetic field.

In a full electrical circuit, current is the rate at which electrons move past a certain point. Current = flow, at its most fundamental level.

The international unit for measuring current is an ampere (AM-pir), sometimes known as an amp. It describes how many electrons.

In a circuit, a current of 1 ampere corresponds to the movement of 1 coulomb of electrons, or 6.24 billion billion (6.24 x 1018) electrons, through a single location in a second.

Therefore, More turns in a coil will make stronger magnet field and reversed direction of the current will change the pole of the magnet.

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Answer:

needle -attract

wooden spoon -repel

nails -attract

safety pins -attract

paper -repel

Explanation: