The switch in a series RL circuit with a resistance of 3.6 ohm , inductance of 3.6 H. and voltage of 27.9 V is closed at t = 0.3 s. What is the maximum current in the circuit? What is the current when t= 1s? Answer in units of A

The minimum super elevation e required to maintain a 45mph speed along the curve is 0.0549 or approximately 0.06.

When a highway turns, there is an alignment transition that needs to be accommodated. The minimum super elevation e required to maintain a 45mph speed limit along the curve is given by the formula: e = (V^2) / (gr)

where V is the design speed of the road in mph, g is the acceleration due to gravity and r is the radius of the curve in feet.

The alignment transition can be accommodated with a turn radius of 750ft. Therefore, r = 750ft = 229mThe design speed of the road is 45 mph. Therefore, V = 45 mph. In order to use the above formula, the speed V needs to be converted to feet per second. 1 mph = 1.47 ft/sec

Therefore, V = 45 x 1.47 = 66.15 ft/sec

The acceleration due to gravity g is 32.2 ft/sec^2Thus, e = (V^2) / (gr) = (66.15)^2 / (32.2 x 229) = 0.0549

The minimum super elevation e required to maintain a 45mph speed along the curve is 0.0549 or approximately 0.06.

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Answer: Explanation:

If the net force on an object is doubled, its acceleration will double If the mass of an object is doubled, the acceleration will be halved .

In Newton’s second law, if the net force acting on object doubles then either acceleration is double or mass is double.

A force is an effect that can alter an object's motion according to physics. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.

According to Newtons second law force is product of mass and acceleration.

F = ma

In Newton’s second law, if the net force acting on object doubles then either acceleration is double or mass is double.

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When a group 1 element reacts, it loses one electron.

GROUP 1 ELEMENT:

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The units of the three numbers in the expression are 2 for the initial angular velocity in radians per second (rad / s), 3 for the angular acceleration in radians per second squared (rad / s²), and 6 in radians per second cubed (rad / s³).

The units of the three numbers in the expression for angular velocity are

Here, 2 is the constant term in the expression, so it represents the initial angular velocity. The units of the initial angular velocity are radians per second (rad / s).

Here 3 is the coefficient of the linear term in the expression, so it represents the angular acceleration. The units of the angular acceleration are radians per second squared (rad / s²).

Here 6 is the coefficient of the quadratic term in the expression, so it represents the rate of change of angular acceleration. The units are radians per second cubed (rad / s³).

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Answer/Explanation:

In chemistry, concentration is the abundance of a constituent divided by the total volume of a mixture. Several types of mathematical description can be distinguished: mass concentration, molar concentration, number concentration, and volume concentration.

A concentration refers to a subject or study within a specific major. As part of the degree coursework, concentration classes count toward your major requirements as well.

Answer:

unbalanced and contact

Explanation:

The two terms that bests describes the net force acting on the sled is an unbalanced and contact force.

Force is a pull or push on a body. We have two main types of forces. Contact forces acts on a body and they must be in touch with it. An example is frictional force.

Non - contact forces acts based on force field and they are not in contact with the body. An example is gravitational force.

Therefore, the force on the wagon is an unbalanced and contact force.

Hi there!

Recall the following:

\(C = \frac{Q}{V}\)

C = Capacitance (F)
Q = Charge (C)
V = Potential difference (V)

The equation for the capacitance of a parallel-plate capacitor:

\(C = \frac{\epsilon_0 A}{d}\)

C = Capacitance (F)
ε₀ = Permittivity of Free Space

A = Area of plates (m²)
d = distance between plates (m)

If the distance is halved, the capacitance will DOUBLE since there is an inverse relationship between capacitance and distance.

Thus, something has to change in regards to the charge or voltage for it to match the doubled capacitance.

Since the capacitor is ISOLATED, it is not connected to a battery, so the voltage is NOT maintained constant. The VOLTAGE will consequentially be changed, while the electric field will be unchanged.

Recall the equation for potential difference:

\(V = Ed\)

If the distance is halved, the voltage will be halved. This is mirrored by the doubled capacitance. Thus, the electric field will remain the SAME.

Answer:

Explanation:

If you pour hazardous household waste in ditches, storm drains, or gutters, it can poison plants and wildlife, contaminate the soil, and harm children and adults who come in contact with it. When it rains, the hazardous household waste travels directly to nearby streams, rivers, and lakes.

Answer:

Buried in the garden – dangerous chemicals and poison can leach into the surface or groundwater. This can affect the soil, plants and water for a long time. ... It may also pollute waterways and drinking water if sent to normal landfills. Hazardous waste should only be stored in specially designed landfills.

Explanation:

putting it somewhere else is safer

Answer:

The answer is C.) Lacks all 3 types of antigens.

Given the velocity versus time graph of an object.

From the graph, the velocity of object A is constant as the line representing its velocity is horizontal. The velocity of object a is decreasing with time. That is, object B is decelerating.

From the graph, at t=5 s the value of the instantaneous velocity of object A is 0 m/s.

And the value of the instantaneous velocity of object B is the same throughout the graph. And the value is 4 m/s.

Thus the value of the instantaneous velocity of object B is greater than that of object A.

Thus the correct answer is B has the greater value

The acceleration due to gravity on a 9.8 x 1026 kg planet that has a radius of 2.8 x 107 m g = 9.8 m/s2.

calculation using the equation:

Gravity (g) = (G x Mass of Planet)/(Radius of Planet)^2

Where G is the gravitational constant (6.67408 x 10-11m3kg-1s-2).

Therefore, gravity (g) = (6.67408 x 10-11m3kg-1s-2 x 9.8 x 1026 kg)/(2.8 x 107 m)^2

g = 9.8 m/s2

What is acceleration due to gravity?

Acceleration due to gravity is the acceleration of an object in a vacuum due to the force of gravity. It is commonly denoted by g and has a value of 9.8 m/s² or 32.2 ft/s² at sea level on Earth.

Therefore, The acceleration due to gravity on a 9.8 x 1026 kg planet that has a radius of 2.8 x 107 m g = 9.8 m/s2.

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The equation =c/f relates wavelength and frequency. There is an inverse relationship between wavelength and frequency.

One crucial equation connects them all: The speed of light is equal to the frequency times the wavelength of any electromagnetic wave. If we know the other measurement, we can use this connection to calculate the wavelength and frequency of the any electromagnetic wave.

The distance between the crests of two waves is known as the wavelength, which also applies to troughs. The number of vibrations that pass across a certain area in a second is the frequency, which is expressed in seconds per cycle (Hz) (Hertz). This article discusses how wavelength and frequency relate to one another.

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region 4: warm, low pressure air

region 1: higher pressure air fills vacancy from low pressure air

region 3; cool high pressure air

region 2: warm air cools and increases in pressure.

The electric force on a proton 1.5 fm from the surface of a spherical nucleus treated as a point charge is 4.84 x 10^-8 N.

To calculate the electric force on a proton 1.5 fm from the surface of a spherical nucleus treated as a point charge, we can use Coulomb's Law. Coulomb's Law states that the electric force between two point charges is directly proportional to the product of their charges and inversely proportional to the square of the distance between them

In this case, we can assume that the nucleus has a positive charge and the proton has a positive charge. The distance between them is given as 1.5 fm or 1.5 x 10^-15 m. The electric force on the proton can be calculated as:

Electric force = (charge of nucleus x charge of proton) / (distance between them)^2
We can express the distance in meters to make the calculation easier:

Distance = 1.5 fm = 1.5 x 10^-15 m

Assuming the charge of the nucleus is +Ze (where Z is the atomic number and e is the elementary charge) and the charge of the proton is +e, we can plug in the values:
Electric force = [(Z x e) x e] / (1.5 x 10^-15 m)^2

Now we need to know the value of Z for the nucleus in question. Let's assume it's a helium nucleus, which has Z = 2.

Plugging in the values:
Electric force = [(2 x 1.6 x 10^-19 C) x (1.6 x 10^-19 C)] / (1.5 x 10^-15 m)^2
Electric force = 4.84 x 10^-8 N

Therefore,4.84 x 10^-8 N is the electric force on a proton 1.5 fm from the surface of a spherical nucleus treated as a point charge

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Answer:

A. true

Suppose A = probability of a day occurring on the weekend

B = probability of day occurring last half of weekend

A int B = 2/7 * 1/2 = 1/7

obviously a Sun can occur only 1/7 of the time

The period of beating is 5sec.

Since period of beating is

τ=2π/(ω'−ω)

 =2π/2π(40-39.2)

τ =5 sec.

T is the time it takes for one complete cycle of vibration to pass through a specific place. The period of a wave reduces as its frequency increases. Period and frequency have an inverse connection and may be represented mathematically as: Period equals Total time divided by Number of cycles.

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Explanation:

The change in an object's momentum is equal to the final momentum minus the initial momentum.

The momentum of an object is given by the product of its mass and velocity:

Initial momentum = mass * initial velocity

Final momentum = mass * final velocity

Given:

Mass of the tennis ball = 5.69x10^-2 kg

Initial velocity = 13 m/s

Final velocity = -18 m/s (opposite direction)

Let's calculate the initial momentum and final momentum:

Initial momentum = (5.69x10^-2 kg) * (13 m/s)

Final momentum = (5.69x10^-2 kg) * (-18 m/s)

Now, let's calculate the change in momentum:

Change in momentum = Final momentum - Initial momentum

Plugging in the values:

Change in momentum = [(5.69x10^-2 kg) * (-18 m/s)] - [(5.69x10^-2 kg) * (13 m/s)]

Performing the calculation will give you the change in the ball's momentum.

Hope I helped

Answer:

juuhu

Explanation:

jjj

ANSWER

B) the opposite sign

EXPLANATION

The force between charged particles is inversely proportional to the square of the distance between particles, from Coulomb's law:

If the force increases it can mean two things: either one or both particles are gaining charge - which is not the case of this problem, or the distance between them is decreasing. In this case, the distance must be decreasing for the force to increase. This means that the particles are moving towards each other, they are being attracted by each other. Since only particles with opposite signs attract, the answer is option B, they have opposite sign.

The speed of the waves passing the anchored boat can be calculated using the formula Speed = Wavelength / Period. With a wavelength of 5 meters and a period of 2 seconds, the speed of the waves is 2.5 meters per second.

The speed of the waves can be determined by the formula:

Speed = Wavelength / Period

Where wavelength is the distance between two consecutive wave crests, and period is the time it takes for two consecutive wave crests to pass a fixed point (in this case, the anchored boat).

We know that the wavelength of the waves is 5 meters. We also know that the period is 2 seconds. Therefore:

Speed = 5 meters / 2 seconds = 2.5 meters/second

So the speed of the waves is 2.5 meters per second.

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The electrical component that is used for detecting light levels in digital cameras is the light meter.

A light meter is a device used to measure the amount of light. In photography industry, a light meter is used to determine the proper exposure for a photograph.

A digital camera is a camera that captures photographs in digital memory.

Most digital cameras can be grouped into four main types which includes:

Each type of these digital cameras has advantages and disadvantages, and some the types are more expensive than their counterparts.

There are two different kinds of light meters which are:

-An incident light meter measures all the light falling onto a subject. Incident light meters help a camera focus on a subject regardless of how light or dark the surrounding background is.

- Reflective light meters  on the other hand do the opposite by measuring the light reflected by or bouncing off a subject.

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Answer:

C. It transforms electrical energy into mechanical energy

Answer: C

Explanation:

Taking into account the definition of wavelength, frecuency and propagation speed, the wavelength of a light with a frequency of 3×10¹⁴ Hz is 1×10⁻⁶ m.

First of all, wavelength is the minimum distance between two successive points on the wave that are in the same state of vibration. It is expressed in units of length (m).

On the other side, frequency is the number of vibrations that occur in a unit of time. Its unit is s⁻¹ or hertz (Hz).

Finally, the propagation speed is the speed with which the wave propagates in the medium, that is, it is the magnitude that measures the speed at which the wave disturbance propagates along its displacement.

The propagation speed relate the wavelength (λ) and the frequency (f) inversely proportional using the following equation:

v = f * λ

All electromagnetic waves propagate in a vacuum at a constant speed of 3x 10⁸ m/s, the speed of light.

In this case, you know:

Replacing:

3x 10⁸ m/s= 3×10¹⁴Hz× λ

Solving:

λ= 3x 10⁸ m/s ÷ 3×10¹⁴Hz

λ=1×10⁻⁶ m

In summary, the wavelength of a light with a frequency of 3×10¹⁴ Hz is 1×10⁻⁶ m.

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If you put 300 J of heat into an engine with an efficiency of 0.35, how much work can be done? 3. How much energy must be put into an engine with an efficiency of 0.6 if 270 J of work are required? 4. An engine with an efficiency of 0.425 uses 1200 J of energy. Find the amount of energy wasted by the engine. 5. Calculate the efficiency of an engine operating between temperatures of 258 K and 600 K 6. An engine runs with its exhaust (cold) reservoir at a temperature of 200 K. To what temperature should the input (hot) temperature be set if an efficiency of 0.8 is desired? 7. Complete the following table of temperatures. Fahrenheit Celsius Kelvin 213 15 98.6 75 408

Answer:

ρ (density) = M / V         mass / unit volume

ρ = 10 g / 5 cm^3 = 2 g/cm^3        density of the metal

A kind of mass movement in which materials move fast in a disorganized, chaotic fashion mixed with water is a debris flow.

Debris flow is a type of mass movement or landslide characterized by the rapid movement of a mixture of water, rock fragments, soil, and other debris down a slope. It typically occurs in mountainous or hilly regions with steep slopes and is triggered by heavy rainfall, snowmelt, or other sources of water.

During a debris flow, the materials become saturated with water, causing them to lose cohesion and flow downhill in a turbulent and uncontrolled manner. The movement is often fast, chaotic, and disorganized, with a mix of solid particles and water acting as a fluid-like mass.

Debris flows can cause significant damage to infrastructure, property, and life, as they can carry large volumes of material and have considerable destructive force.

In summary, a debris flow refers to a type of mass movement in which materials, such as rocks, soil, and debris, move rapidly in a disorganized and chaotic fashion mixed with water. It is an important geological phenomenon that can have severe consequences in areas prone to such events.

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Answer:

the correct answer is D

Explanation:

Answer: hello your question lacks some data attached below is the missing data

answer : T - mg = ma\(_{c}\)

Explanation:

Given that the vine has a fixed end and Tarzan's path is circular

At Tarzans lowest point the point can be expressed as shown below.

It can be expressed as : T - mg = ma\(_{c}\)

A wave is a disturbance that travels from one point to another in a medium. This disturbance can also be referred to as variation in energy. Light consists of energy derived from oscillating magnetic and electric fields. As light moves, it carries this energy from the source to another location. Also, waves have frequency and wavelength. Given these characteristics of light, we can conclude that

light is a kind of wave