is glass a substance homogeneous mixture or heterogeneous mixture?

Answer:

The current would be multiplied by 1/4, meaning it is reduced by 3/4 of itself.

Explanation:

This is because when the resistance increases, the current decreases along with it.

Answer:

3.33 A

Explanation:

Equalent Resistance=30 ohms

I = V / R

I = 100 / 30

I = 3.33 A

Hence frequency of the standing wave is 2 s⁻¹

Standing waves are formed when 2 waves of same wavelength and amplitude travelling in the opposite direction are superposed. Standing waves do not transport energy.

Here,

Length of the string, L = 5 m

Speed of the wave, v = 20 m/s

From the figure we can see that it is a string having two nodes and only one antinode. That means it is the first harmonic.

For first harmonic,  L = λ/2

So, wavelength, λ = 2L = 2x 5

   λ = 10 m

Therefore frequency, f = v/λ

  f = 20/10

  f = 2 s⁻¹

Hence frequency of the standing wave is 2 s⁻¹

To learn more about standing waves, click:

https://brainly.com/question/14151246

#SPJ9

Your question was incomplete. Attaching the image here.

Use the exponential decrease formula.

First, find the constant k. The final amplitude would be half, and t = 1.

Then, we find the time of its five-fold decrease, which means the final amplitude is a fifth part of the initial amplitude.

Therefore, the time of its five-fold decrease is 2.32 seconds.

Answer:

C

Explanation:

The displacement amplitude for sound waves with a frequency of 1000 Hz and a pressure amplitude of 3.0×10^(-2) Pa in air is approximately 3.3332×10^(-6) m.

To determine the relationship between the displacement amplitude and pressure amplitude of sound waves, we can use the formula for sound intensity:

I = (1/2) * ρ * v * A^2

Where:

I is the sound intensity

ρ is the density of the medium (in this case, air)

v is the velocity of sound in the medium

A is the displacement amplitude

Given:

Frequency (f) = 1000 Hz

Displacement amplitude (A) = 1.2×10^(-8) m

Pressure amplitude (P) = 3.0×10^(-2) Pa

Velocity of sound (v) = 344 m/s

First, we need to find the density of air (ρ). The density of air at standard conditions is approximately 1.225 kg/m^3.

Next, we can rearrange the formula for sound intensity to solve for the displacement amplitude (A):

I = (1/2) * ρ * v * A^2

A^2 = (2 * I) / (ρ * v)

A = √((2 * 3.0×10^(-2)) / (1.225 * 344))

A ≈ 3.3332×10^(-6) m

To know more about displacement amplitude here: https://brainly.com/question/31609407

#SPJ11

(c) 0. 015 m NaCl of the following aqueous solutions would be expected to have the smallest conductance.

Conductance is the expression of the ease of the passing of the electrons. Conductivity is a numerical expression of the tendency of an aqueous solution to carry an electric current. Electricity is conducted through an electrolytic solution due to the movement of ions. In general, the greater the number of ions in the solution higher is the conductance.

The conductance of a solution depends on 1) the concentration of the ions it contains, 2) on the number of charges carried by each ion, and 3) on the mobilities of these ions.

In an aqueous solution , charged particles that conduct electricity are ions , because of free ions electricity can be conducted in the solution. So , conductance depend upon concentration of the solution , more the concentration of solution more will be the conductance .

out of given solution , options a) 0.060 m solution of NaCl will be the most conducting solution as it is most concentrated option c) 0.015 m solution of NaCl  will be the least conducting solution as it is the least concentrated solution .

correct option will be (c) 0. 015 m NaCl of the following aqueous solutions would be expected to have the smallest conductance.

To learn more about conductivity here

https://brainly.com/question/21496559?referrer=searchResults

#SPJ4

Answer:

Explanation:

2) From F=ma

Force =15×40=600N or kgm/s2

3)From the same equation making acceleration the subject of the formula will give

a=f÷m

=24÷4=6m/s2

4)m=f÷a

=45÷15=3kg

The name of the substance is silver based on the specific heat capacity value.

The specific heat capacity of the substance is calculated by applying the following formula for heat capacity.

Q = mcΔθ

where;

c = Q / mΔθ

The specific heat capacity of the substance is calculated as;

c = (5875 J ) / ( 500 g x 50 )

c = 0.235 J/kgK

The substance that has the same specific heat capacity calculated above is silver.

Learn more about specific heat capacity here: https://brainly.com/question/16559442

#SPJ1

Answer:

Procedures 4 and 5.

Explanation:

Both would cause the box to move up.

4, it becomes lighter

5, the other becomes heavier, pulling it down, causing box one to go up

Since we seek the action of force to push up box 1, the students observes an unbalanced upward force on Box 1 in procedures 4 and procedure 5.

Generally, In procedure 4 we added another mass to the box two, therefore, causing box one to experience an upward force.

Therefore, students observe an unbalanced upward force on Box 1 in procedure 4.

Procedure 5 we remove masses from box 1 resulting in box 2 becoming heavier, pulling it down.

Therefore, students observe an unbalanced upward force on Box 1 in procedure 5.

Read more about Force

https://brainly.com/question/26115859

The correct answer is option a. A red indicator light on a dashboard typically indicates a serious vehicle malfunction that needs to be addressed immediately.

This type of light is usually used to indicate a problem that could cause damage to the vehicle or affect its safety if not addressed promptly. It is important to pay attention to a red indicator light and to have the vehicle checked by a mechanic as soon as possible to diagnose and fix the problem.

A red indicator light on a dashboard typically indicates a serious or critical issue with the vehicle that requires immediate attention. Ignoring this light could lead to further damage or safety concerns. It is important to have the vehicle checked by a mechanic as soon as possible.

Learn more about Car Indicators here:

https://brainly.com/question/14368982

#SPJ4

Answer:

Nuclear to radiant to thermal

Explanation:

The Sun works on nuclear fusion, hence the nuclear energy, to radiant the type of energy given off the sun that is absorbed by the solar panel, to thermal, thermal energy is spread through the release of heat from the solar panel

Answer:

1.9 kg*m/s, west

Explanation:

Momentum is the quantity of motion a body possesses.

 It is expressed as:

 Momentum  = mass x velocity

 The unit of mass is kg;   velocity is in m/s

So  momentum unit is kgm/s

Also, this quantity is a vector, so, it not only has magnitude, the direction must be included

The correct option is D, which is 1.9 kg*m/s, west.

Momentum is defined as the quantity of motion an object has.

For example, if a stone is moving down the slope the stone will have some momentum, which will be the quantity of motion the stone will have.

Further, the momentum(p) is given as a product of mass and velocity. And it is written as,

\(\bold{Momentum = mass \times velocity}\),

\(p = m\times v\) .

For, the unit of momentum,

\(\begin{aligned}Momentum&= mass \times velocity\\&= kg \times m/sec \end{aligned}\)

thus, the unit for momentum is kg m/sec.

From all the given options, only option D shows the correct unit for momentum. therefore, the correct option is D, which is 1.9 kg*m/s, west.

To know more visit:

https://brainly.com/question/4956182

Answer:

batmintan ......

.

.

.

.

.

.

.....

.

thanks

Answer:

The total distance between A and B is 30 km

Explanation:

The given information are;

The time duration of the acceleration of the train from station A = 3 minutes = 0.05 hours

The speed attained by the train after the acceleration = 144 km/h

The time duration the train maintains the speed = 10 minutes = 0.1\(\bar 6\) hours

The time duration in which the train decelerates to station B = 2 minutes = 0.0\(\bar 3\) hours

The equation of motion required are;

The initial acceleration, a = (144 - 0)/0.05 = 2,880 km/h²

The distance covered, s = u·t + 1/2·a·t²

Where;

u The initial velocity = 0

∴ s₁ = 0 × 0.05 + 1/2 × 2880 × 0.05² = 3.6 km

s₁ = 3.6 km

The distance, s₂ the train covers at the constant speed 144 km/h for 10 minutes (1/6 hours) is given as follows;

s₂ = Velocity Time = 144 × 1/6 = 24 km

s₂ = 24 km

The deceleration, a₂ that brings the train to a stop in 2 minutes (1/30 hours) is given as follows;

a₂ = (0 - 144)/(1/30) = -4320 km/h²

The distance covered, s₃ by the train as it decelerates to rest from the initial constant speed is given as follows;

s₃ = u·t + 1/2·a·t²

Where;

u = The initial velocity =144 km/h

We have;

s₃ = 144×1/30 - 1/2 × 4320 × (1/30)² = 2.4

s₃ = 2.4 km

The total distance between A and B, s = s₁ + s₂ + s₃ = 3.6 + 24 + 2.4 = 30 km

The total distance between A and B = 30 km.

The x-component of the net force on q2 is -1.439 × 10^-10 N.

The given charges are Q1 = -4.60 * 10^-6 C, q2 = +3.75 * 10^-5 C, and q3 = -5.30 * 10^-6 C. We need to find the x-component of the net force on q2.

The formula for force is F = K(q1 * q2) / r^2, where K is Coulomb's constant = 8.99 × 10^9 Nm^2/C^2, q1 and q2 are the charges in Coulombs, and r is the separation distance in meters.

The force between q2 and Q1 on the x-axis can be calculated as:

F1 = K(Q1 * q2) / r^2 ... (i)

Here, K = 8.99 × 10^9 Nm^2/C^2, Q1 = -4.60 × 10^-6 C, q2 = 3.75 × 10^-5 C, and r = 0.05 m.

Calculating F1:

F1 = (8.99 × 10^9) * (-4.60 × 10^-6) * (3.75 × 10^-5) / (0.05)^2

F1 = -1.242 × 10^-10 N

Similarly, the force between q2 and q3 on the x-axis can be calculated as:

F2 = K(q2 * q3) / r^2 ... (ii)

Here, K = 8.99 × 10^9 Nm^2/C^2, q2 = 3.75 × 10^-5 C, q3 = -5.30 × 10^-6 C, and r = 0.06 m.

Calculating F2:

F2 = (8.99 × 10^9) * (3.75 × 10^-5) * (-5.30 × 10^-6) / (0.06)^2

F2 = -1.971 × 10^-11 N

The net force can be calculated by adding F1 and F2, considering their x-components:

Fnet = F1 + F2

Fnet = (-1.242 × 10^-10) + (-1.971 × 10^-11)

Fnet = -1.439 × 10^-10 N

As both forces act in opposite directions along the x-axis, the net force is in the negative x-direction.

Learn more about net force here :-

https://brainly.com/question/18109210

#SPJ11

The given series, 1 + 7n Σ 57 n = 1, is divergent because the terms in the series continue to increase without bounds, the sum of the series also increases indefinitely.

To determine the convergence or divergence of the series, we can analyze its behaviour as n approaches infinity. The series can be written as Σ(1 + 7n*57) for n = 1 to infinity. By simplifying the expression, we have Σ(399n + 1) for n = 1 to infinity.

As n increases, the summand of the series grows linearly with a coefficient of 399. Since the coefficient is nonzero and positive, the series will diverge. This means that the sum of the series will not approach a finite value as n tends to infinity.

Therefore, the given series is divergent, and we cannot find its sum. It is important to note that a divergent series does not have a finite sum. Therefore, the sum of the given series is "DIVERGES."

Learn more about convergence here:

https://brainly.com/question/28501133

#SPJ11

k = 1/2 × m × v^2

_____________________________

1. k = 1/2 × 60 × ( 10 )^2

k = 30 × 100

k = 3000 j

_____________________________

2. k = 1/2 × 60 × ( 9 )^2

k = 30 × 81

k = 2430 j

_____________________________

3. k = 1/2 × 60 × ( 4 )^2

k = 30 × 16

k = 480 j

_____________________________

4. k = 1/2 × 60 × ( 6 )^2

k = 30 × 36

k = 1080 j

______________________________

5. k = 1/2 × 60 × ( 0 ) ^2

k = 30 × 0

k = 0 j

the ans is like this

1 4

2 5

3

A proton and an electron in a hydrogen atom are separated on the average by about 4.8x10-11 m. The magnitude and direction of the electric field set up by the proton at the position of the electron is (E)=  6.24×10¹¹ N/C.

The electric field is a field that is created by any positive or negative charge. In an atom the electron or proton that creates a field that called the electric field.

To calculate the electric field we are using the formula here ,

E= k(q/r²)

Where we are given,

k= The Coulomb's constant . = 8.99 ×10⁹ N.m²/C²

q= The charge of the electron. = 1.6×10⁻¹⁹ C

r= The distance of separation of atom. = 4.8×10⁻¹¹ m.

We have to calculate the electric field of the atom. = E

Now we put the values we get,

E= k(q/r²)

Or, E=  8.99 ×10⁹×(1.6×10⁻¹⁹/(4.8×10⁻¹¹)²)

Or, E=  6.24×10¹¹ N/C

Now we can say that, The magnitude and direction of the electric field set up by the proton at the position of the electron is (E)=  6.24×10¹¹ N/C.

Learn more about the electric field:

https://brainly.com/question/14372859

#SPJ4

The final speeds of both cars relative to the ground after the collision are V₁ = 6 m/s and V₂ = 5.6 m/s respectively.

An elastic collision is a collision in which there is no internet loss in kinetic energy within the gadget because of the collision. each momentum and kinetic electricity are conserved portions in elastic collisions.

Given;

m₁ = m₂ = 400 kg

v₁ = 5.6 m/s

v₂ = 6 m/s

According to the law of conservation of momentum,

m₁v₁ + m₂v₂ = m₁v₁ + m₁v₂

According to the law of conservation of energy,

m(v₁)²/2 + m(v₁)²/2 = m(v₁)²/2 + m(v₁)²/2

Now, applying the law to momentum and law of conservation of energy,

m₁v₁ + m₂v₂ = m₁v₁ + m₁v₂

5.6 + 6 = v₁ + v₂ ----------------(1)

m(v₁)²/2 + m(v₁)²/2 = m(v₁)²/2 + m(v₁)²/2

(5.6)² + (6)² = (v₁)² + (v₂)²

67.36 =   (v₁)² + (v₂)² ---------------(2)

From equation 1 and 2

V₁ = 6 m/s and V₂ = 5.6 m/s

An elastic collision is a come between two bodies in which the full kinetic energy of the two bodies remains equal. In an ideal, perfectly elastic collision, there may be no internet conversion of kinetic strength into other kinds which includes heat, noise, or capacity electricity.

Elastic collisions arise whilst both the momentum and kinetic energy are conserved, just like how billiard balls bounce off each different and move at the same speeds as earlier. Inelastic collisions appear whilst simplest the momentum is conserved but not the kinetic power.

Learn more about elastic collision here:-https://brainly.com/question/7694106

#SPJ4

Answer:

I belive the awnser to this question is density.

Answer:

Following features are similar in longitudinal and transverse waves: Both waves are mechanical waves. Both transport energy without transporting matter. Particles oscillate about their mean position in both waves.

Answer:

Explanation:

Silver, Bronze, Gold

The focal length of the lens in the eye when it produces a clear image of an object 41.7 cm away is approximately 1.957 cm.

To calculate the focal length of the lens, we can use the lens formula:
1/f = 1/v - 1/u
Where f is the focal length, v is the image distance, and u is the object distance.
Given that the distance from the lens of the eye to the retina is 1.87 cm, which corresponds to the image distance (v), and the object distance (u) is 41.7 cm, we can substitute these values into the lens formula:
1/f = 1/1.87 - 1/41.7
Simplifying the equation, we get:
1/f = 0.5348 - 0.0239
1/f = 0.5109
Now, we can find the reciprocal of both sides:
f = 1/0.5109
f ≈ 1.957 cm
Therefore, the focal length of the lens in the eye when it produces a clear image of an object 41.7 cm away is approximately 1.957 cm.

To learn more about focal length
https://brainly.com/question/30571594
#SPJ11

Answer:

D = 4 g/cm³

Explanation:

Density = Mass / Volume

Step 1: Define

D = x

M = 12 g

V = 3 cm³

Step 2: Substitute

D = 12g/3 cm³

Step 3: Simplify

D = 4g / cm³

Answer:

The greatest force of gravity on the ball will occur at the point when the ball is near to hit the ground

Explanation:

We know that the earth's center attracts everything towards its center with an acceleration of 9.8 m/s² so it simply means that the change in velocity must occur to produce acceleration. When the ball comes towards the earth, its speed  continuously increases and it is at maximum level when it is about to hit the ground so this is the point where gravitational force is maximum.

I hope this helps ^_^

Answer:

Determine the total capacitance between points A and B in the figure below. C =104F C = 5uF C=20uF MAE ce Select the best answer: 2.84uF 2.80uF O 2.90pF 2.86F

Explanation:

hoped it help cutie if u need more help js ask meh

Total energy = Energy per second * Number of seconds in an hour.By performing these calculations, we can find the total energy of the photons detected in one hour.

To calculate the total energy of the photons detected in one hour, we need to determine the energy of each photon and then multiply it by the number of photons detected per second and the number of seconds in an hour.

The energy of a photon can be calculated using the equation:

Energy = Planck's constant * frequency

Since we are given the wavelength, we can use the relationship between wavelength and frequency:

Frequency = speed of light / wavelength

Plugging in the given wavelength, we get:

Frequency = speed of light / wavelength

Next, we can calculate the energy of each photon:

Energy = Planck's constant * frequency

Now, we multiply the energy of each photon by the number of photons detected per second:

Energy per second = Energy of each photon * Number of photons detected per second

Finally, we multiply the energy per second by the number of seconds in an hour to get the total energy of the photons detected in one hour:

Total energy = Energy per second * Number of seconds in an hour

for ore question on photons

https://brainly.com/question/4784145

#SPJ8