a plano-convex glass lens of radius of curvature 2.9 m rests on an optically flat glass plate. the arrangement is illuminated from above with monochromatic light of 546-nm wavelength. the indexes of refraction of the lens and plate are 1.6. determine the radii of the first and second bright fringes in the reflected light.

The reading of the voltmeter can be determined by finding the potential difference across the 2Ω resistance by using the value of current in the circuit. V=IR, here V is the potential difference across a resistance R through which a current I is flowing.

Answer:

Yes the water amounts are the same.

Explanation:

Answer:

Heat vs temperature - Energy Education The core difference is that heat deals with thermal energy, whereas temperature is more concerned with molecular kinetic energy. Heat is the transfer of thermal energy, whereas temperature is a property the object exhibits.

The spring constant of the spring is 19.6 N/m.

The correct answer is option D.

The spring constant of the spring is calculated by applying the following equation as shown below.

Mathematically, the formula of Hooke's law is given as;

F = kx

where;

k = F / x

the extension of the spring when the 250 g mass was hung on it is calculated as;

x = 30 cm - 25 cm

x = 5 cm = 0.05 m

The spring constant of the spring is calculated as;

k = ( mg ) / x

where;

k = ( 0.1 x 9.8 ) / ( 0.05 )

k = 19.6 N/m

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Answer:

Because of earth's tilt

Explanation:

Answer:

Different parts of Earth's surface receive different amounts of sunlight. ... Because of the Earth's tilt the sun's rays strike the surface at a slant at the poles; they are less focused. This spreads the rays over a wide area. Because the sun's rays hit at a slant, the area is heated less.

Explanation:

From Google

Can I have brainliest

Answer:

the normal human body temperature in Celcius is 37°C, in Fahrenheit is 98.6°F, in Kelvin is 310°K

"Power electronics" includes inverters, charge controllers, rectifiers, chargers, dc-dc converters, maximum power point trackers, and power quality equipment.

Power electronics refer to the field of engineering that deals with the conversion, control, and conditioning of electrical power using electronic devices. This field plays a crucial role in various applications, including renewable energy systems, electric vehicles, power supplies, and industrial automation.

Within the context of the question, power electronics devices such as inverters are used to convert DC power to AC power, charge controllers regulate the charging of batteries from solar panels,

rectifiers convert AC power to DC power, chargers replenish the energy stored in batteries, dc-dc converters convert DC voltage levels, maximum power point trackers optimize the power output of solar panels, and power quality equipment ensures the stability and reliability of the power supply.

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Answer:

1:281.25m

2:75m/s

Explanation:

using the equation

\(v^{2} = u^{2} + 2gs\)

at maximum height v is zero so using that you can make s the subject of the formula

\(h \: max = u^{2} \div \: 2g\)

so substitute the velocity 75 and the constant g-10m/s^2

as for the returning velocity we say displacement is zero since you go and come back the same distance

so

\(v = { + or - }u\)

u is the initial speed in this case it's positive since going in the direction of gravity

Answer:

30q1

Explanation:

Uniformly charged spheres are “touching”. 4. What must be the distance between point charge q1 = 26.0µC and point charge q2 = −47.0µC

Answer:

t = 17658 s = 294.3 min = 4.9 h

Explanation:

The general formula for power is:

\(P = \frac{W}{t}\)

where,

P = Power of the Motor = 50 KW = 50000 W

W = Work Done by Motor = Change in P.E of Water = mgh

g = acceleration due to gravity = 9.81 m/s²

m = mass of  water = ρV

h = depth of water = 180 m

ρ = density of water = 1000 kg/m³

V = Volume of Water = 500 m³

t = time taken = ?

Therefore,

\(P = \frac{mgh}{t}=\frac{\rho Vgh}{t}\\\\t = \frac{\rho Vgh}{P}\\\\t = \frac{(1000\ kg/m^3)(500\ m^3)(9.81\ m/s^2)(180\ m)}{50000\ W}\\\\\)

t = 17658 s = 294.3 min = 4.9 h

Let me try:

Normal force= 169.74N

Coefficient of kinetic friction= 0.577

Explanation

a. For a given inclined plane, normal friction is equal to the force perpendicular to the plane which is equal to

mgcos theta = 20×9.8× cos30 = 169.74N

b. The coefficient of kinetic friction for an inclined plane is given as

tan theta =tan 30 = 0.577

The normal force exerted by the seat of the car on the passenger is 784.8 N.

When the car encounters the bump, it experiences an upward force due to the change in the road's surface. This force causes the car to accelerate upwards and momentarily lose contact with the ground. However, since the car is moving at a steady speed of 10 m/s, it must also experience a downward force equal in magnitude to the upward force. This downward force is provided by the normal force exerted by the seat of the car on the passenger.

To determine the normal force, we can use the fact that the passenger and the car are both in equilibrium at the top of the bump. This means that the sum of the forces acting on them must be equal to zero. Since the car is moving at a steady speed, there is no net force acting on it, and we can ignore its weight.

Therefore, the only force acting on the passenger is the normal force, which must be equal in magnitude to the force of gravity on the passenger:

F_gravity = m*g

where m is the mass of the passenger (80.0 kg) and g is the acceleration due to gravity (9.81 m/s^2).

So, the normal force exerted by the seat of the car on the passenger at the top of the bump is:

F_normal = F_gravity = m*g = 80.0 kg * 9.81 m/s^2 = 784.8 N.

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Answer:

the relationship between Newton first law of motion and inertia is there are two types of inertia: 1. Inertia of rest

2. Inertia of motion

Newton first law states that the body at rest stays at rest until it is acted by external or unbalanced force that is inertia of rest or body in motion remain in motion unless it is acted by unbalanced force or external force and this is inertia of motion.

Inertia is the tendency of an object to remain at motion or in rest.

Answer:

d. sexual reproduction

Explanation:

A single cell divides to make two cells and these two cells then divide to: we call this process "cell division" and "cell reproduction," and there are two ways cells divide—mitosis and meiosis. This is all part of sexual reproduction.

Answer:

Redshift, or lower power

Explanation:

doppler effect

waves get stretched when you are moving away from something, and squished when you are moving towards it. Imagine you have a long, bent wire. if you stretch out the wire, the wavelength becomes longer. This also applies to sound.

Answer:

r = 1.999m

Explanation:

E = kq/r²

10 = 9*10^9*q/1²

q = 10/9*10^9

q = 1.11*10^-9

then at what distance

r² = kq/E

r² = 9*10^9*1.11*10^-9/2.5

r² = 9.99/2.5

r² = 3.996

r = √3.996

r = 1.999m

The linear momentum of the earth when mass and orbital radius are given is calculated to be 17.8 × 10²⁸ kg m/s.

The orbital radius (r) of earth is 1.496 × 10¹¹ m. So, the distance covered by one rotation is,

Distance = 2 π r = 2π (1.496 x 10¹¹) m

365 day when converted into seconds is, 365 × 24 × 60 ×60 s

So, the period of one rotation is 3.15 × 10⁷ s.

The velocity of earth (v) = distance/time = [2π (1.496 × 10¹¹)]/ 3.15 x 10⁷ = 298840 m/s

Linear momentum = mass × velocity = 5.972 × 10²⁴ kg × 298840 m/s = 17.8 × 10²⁸ kg m/s

Therefore, the linear momentum of earth is 17.8 × 10²⁸ kg m/s

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The electric field at any point in space is the vector sum of the electric fields produced by each charge. Since all three charges have the same magnitude and direction of electric field, the net electric field is zero when the vector sum of the electric field from all charges is zero. This occurs at the point (x, y) = (0, 3/5 cm).

To explain further, the electric field due to each of the charges is along the +x-axis and so their electric fields cancel each other out. Thus, the only way for the net electric field to be zero is for the x-component of each electric field to be equal in magnitude but opposite in sign. This is only possible when x = 0, giving the point (0, 3/5 cm).

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Answer:

\(5.7 g/cm^{3}\)

Explanation:

ρ = 8.0 g/\(1.4 cm^{3}\) = \(5.7 g/cm^{3}\)

Answer:

2.At the end of meiosis, there are four cells each with 23 chromosomes, for a total of 92 chromosomes split between the four cells.

Answer:

\( \boxed{\sf Distance \ travelled = 62.5 \ m} \)

Given:

Initial velocity (u) = 25 m/s

Final velocity (v) = 0 m/s (Rest)

Time taken (t) = 5 seconds

To Find:

Distance travelled by car (s)

Explanation:

From equation of motion of object moving with uniform acceleration in straight line we have:

\( \boxed{ \bold{s = (\frac{v + u}{2} )t}}\)

By substituting value of v, u & t in the equation we get:

\( \sf \implies s = ( \frac{0 + 25}{2} ) \times 5 \\ \\ \sf \implies s = \frac{25}{2} \times 5 \\ \\ \sf \implies s = 12.5 \times 5 \\ \\ \sf \implies s = 62.5 \: m\)

\( \therefore\)

Distance travelled by car (s) = 62.5 m

The distance  car travel during that time is 62.5 meter.

Acceleration is the rate at which speed and direction of velocity vary over time. A point or object going straight ahead is accelerated when it accelerates or decelerates.

Even if the speed is constant, motion on a circle accelerates because the direction is always shifting. Both effects contribute to the acceleration for all other motions.

Initial velocity (u) = 25 m/s

As the car becomes rest, final velocity (v) = 0 m/s (Rest)

Time taken (t) = 5 seconds.

The deceleration of the car: a = (initial speed - final speed)/time interval

= ( 25 m/s - 0 m/s)/5 second

= 5 m/s²

The distance  car travel during that time = ut - at²/2

= 25 × 5.0 meter - (5×5²/2) meter

= 62.5 meter.

Hence, the distance  car travel during that time is  62.5 meter.

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Explanation:

it's lead because see it's density if u have more density the voice will be slowest

Answer:

89km

Explanation:

Don't know how to explain without a pic.

Answer:

Beryllium chloride

Explanation:

I hope this helps!

Can I get branliest?!

Answer:

P₄ + 3O₂ → 2P₂O₃

Explanation:

To balance an equation we take each element one by one on each side and balance their atoms.

Like P₄ (Tetraphosphorus) in the left side has 4 atoms of phosphorus.

While on the right side P₂O₃ (Diphosphorus Trioxide) has 2 Phosphorus atoms.

So place 2 as a coefficient in front of P₂O₃.

Now Phosphorus atoms (4 atoms) are balanced on each side.

Now number of Oxygen atoms in P₂O₃ = 2 × 3 = 6

On the left left side number of Oxygen atoms in O₂ = 2

To balance Oxygen atoms in each side, place 3 as a coefficient before O₂ on the left.

Therefore, balance equation will be,

P₄ + 3O₂ → 2P₂O₃

Answer:

An interaction between electricity and magnetism produces an electromagnet, while a permanent magnet induces the paper clip's magnetic field.

Explanation:

A p e x :)

The viscosity of the experimental lubricant is 83.63 cP. The calculated viscosity can be confirmed by comparing it with known viscosity values and conducting additional tests for validation.

To calculate the viscosity of the liquid, we can use the formula for terminal velocity in a viscous medium. The terminal velocity (V) is given by the equation V = (2/9)(g)(r^2)(ρb - ρl) / η, where g is the acceleration due to gravity, r is the radius of the ball, ρb is the density of the ball, ρl is the density of the liquid, and η is the viscosity of the liquid.

Rearranging the formula, we can solve for viscosity η, which gives us η = (2/9)(g)(r^2)(ρb - ρl) / V.

Plugging in the given values, we have g = 9.8 m/s^2, r = 0.001 m, ρb = 2120 kg/m^3 (converted from 2.12 g/cm³), ρl = 1060 kg/m^3 (converted from 1.06 g/cm³), and V = 0.0138 m/s (converted from 1.38 cm/s).

Substituting these values into the formula, we can calculate the viscosity in cP (centipoise) by multiplying the result by 1000, giving us 83.63 cP. To validate the calculated viscosity, it is important to compare it with known viscosity values for similar lubricants and conduct additional tests to ensure consistency and accuracy.

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Answer:

76 seconds

Explanation:

Using the formula t=vf-vo/a, where t=time, vf= final velocity, v0= initial velocity, and a= acceleration, we can solve for your problem.

Plug in known variables...

t=200-10/a

we can solve for a by using the formula F=ma where f=force, m= mass, and a=acceleration and rearranging it to solve for a.

a=F/m

Plug in known variables...

a=250N/100kg

a=2.5m/s^2

Plug in our newly found acceleration of 2.5 m/s^2 into our first equation and solve....

t=190/2.5

t=76 seconds

Earth's inner movements resemble dynamos and produce the magnetosphere. The magnetosphere of Earth is a dynamic, networked system that reacts to solar, planetary, and interstellar circumstances.

The area surrounding a planet where the magnetic field of the planet is dominant is called a magnetosphere. All of the rocky planets in our solar system have magnetospheres, but Earth's is the strongest. The enormous, comet-shaped bubble that makes up Earth's magnetosphere has been essential to the planet's capacity to support life. This magnetic environment has protected life on Earth from its inception and continues to do so. The magnetosphere protects our planet from solar and cosmic ray radiation as well as the solar wind's steady stream of charged particles that stream off the sun, which may erode the atmosphere.

Due to the convective motion of charged,

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