A honey bee's wings beat at 230 beats


per second. If the speed of sound in air


is 340 m/s, what is the wavelength of the


sound wave?


1 pt: knowns/unknown


1 pt: write the equation


1 pt: solve


1 pt: correct answer (you can round to


one decimal place)


please answer right away

Answer:

32

Explanation:

Answer:

\(3.9056\times 10^6\)

Explanation:

The number given in standard form is

\(3905600\)

The given scientific notation is

\(3.9056\times 10^7=39056000\)

The decimal will move seven digits to the right.

There is an extra zero when we expand the given scientific form.

\(3905600\neq 39056000\)

The scientific form of the given number is \(3.9056\times 10^6\).

So, the given scientific notation of the number is wrong.

Answer: b

Explanation:

b

Answer:

b

Explanation:

b

Answer:

The distance of the goggle from the edge of the pool is 4.726 m

Explanation:

The given information are;

The depth of the swimming pool = 3.0 m deep

The height of the laser pointer above the swimming pool edge = 1.0 m

The distance from the pool edge the laser  pointer enters the water  = 2.0 m

The angle between the pool and the laser = ∅ = tan⁻¹(1/2) = 26.57°

Therefore, the angle of incidence to the vertical \(\theta_i\),  = θ - ∅ = 90 - 26.57° = 63.43°

By Snell's law we have;

The ratio of the sin of the angle of incidence to the sin of the angle of refraction is a a constant equal to the ratio of the refractive indices as follows;

\(\dfrac{sin (\theta_i)}{sin (\theta_r} =\dfrac{n_r}{n_i}\)

Where:

\(n_r\) = Refractive index of the refractive medium which is water = 1.33

\(n_i\) = Refractive index of the incidence medium which is air = 1.00

Therefore;

\(\theta_r = sin^{-1} \left (\dfrac{n_i \times sin (\theta_i)}{n_r} \right) = sin^{-1} \left (\dfrac{1\times sin (63.43)}{1.33} \right) = 42.26 ^{\circ}\)

We have that tan(\(\theta_r\)) = (Distance of the goggles from the point directly above the point of incidence of the beam)/(The water depth)

tan(42.26) = (The horizontal distance of the goggles from the point of incidence of the laser on the water surface)/(3.0)

∴ The horizontal distance of the goggles from the point of incidence of the laser on the water surface = 3.0 × tan(42.26) = 2.726 m

The distance of the goggle from the edge of the pool = The horizontal distance of the goggles from the point of incidence of the laser on the water surface + The distance from the edge of the water surface the laser enters the water

The distance of the goggle from the edge of the pool = 2.726 + 2 = 4.726 m

The distance of the goggle from the edge of the pool = 4.726 m.

The total work done on the box by the student while pushing it from the bottom to the top of the incline is 300 joules.

To calculate the work done, we need to consider two components: the work done against gravity and the work done parallel to the incline. First, let's calculate the work done against gravity. The box is lifted vertically by 2.0 meters, so the work done against gravity is given by the formula: work = force × distance × cos(theta), where theta is the angle between the force and the direction of displacement.

Since the force is acting vertically upward and the displacement is also vertical, the angle theta is 0 degrees, and cos(0) is equal to 1. Therefore, the work done against gravity is 50 N × 2.0 m × 1 = 100 J.

Next, let's calculate the work done parallel to the incline. The force applied by the student is 25 newtons, and the displacement along the incline is 6.0 meters. The angle between the force and the direction of displacement is also 0 degrees, so cos(0) is equal to 1. Therefore, the work done parallel to the incline is 25 N × 6.0 m × 1 = 150 J.

Finally, we add the work done against gravity (100 J) and the work done parallel to the incline (150 J) to obtain the total work done on the box, which is 100 J + 150 J = 300 J. Thus, the total work done on the box by the student while pushing it from the bottom to the top of the incline is 300 joules.

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The amount of time required to generate energy on the exercise bike is almost impractical, and other sources of energy should be considered.

Let's start with calculating the amount of energy that the AC unit consumes in a day.

Power = Voltage x Current

The power consumption of the AC unit is 3500 Watts.

Time = Power / Voltage x Current (Ohm's Law)

Assuming that your home uses 120 volts AC, the amount of current needed is as follows:

Current = Power / Voltage

= 3500 W / 120 V

= 29.16 A.

The time required to operate the AC unit for four hours per day is:

Time = Power / Voltage x Current

= 3500 W x 4 hr / 120 V x 29.16 A

= 12 hours.

Now, if you can generate a consistent power of 300 watts on the exercise bike, the amount of time you'd need to work out each day to keep the AC unit running for four hours would be:

Time required for the exercise bike = Time for AC Unit x (Power required by AC unit / Power generated by exercise bike)

Time required for the exercise bike = 4 hours x (3500 W / 300 W)

Time required for the exercise bike = 46.7 hours.

Using an exercise bike to generate electricity is a great idea, but it would be difficult to generate enough energy to keep large home appliances running, such as a central AC unit.

In this case, the amount of time required to generate energy on the exercise bike is almost impractical, and other sources of energy should be considered.

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Answer:

The shadow would be on your left side.

Explanation:Give brainliest if this helped :)

Temperature is the degree of hotness or coldness of an object or substance. The SI unit of temperature is Kelvin."97%": The question suggests that a reaction must be run at a specific temperature to achieve 97% yield or completion. Yield refers to the amount of product obtained from a reaction.

To achieve 97% yield or completion, the reaction must be run at a specific temperature. Temperature plays an essential role in chemical reactions since it affects the rate of reaction, activation energy, and equilibrium. The temperature at which a reaction runs optimally, producing the most product, is known as the reaction's optimum temperature. As a result, the temperature must be controlled during a chemical reaction.To achieve 97%, the reaction must be run at a specific temperature.

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Answer:

30 m/s

Explanation:

Answer:

The speed is equal to Distance divided by Time.

The SI Unit of Speed is m/s or meters per second.

V = S/T

= 750/25

= 30 m/s

It is a true statement that the three categories that American Imperialism sought to enhance were political, military, and economic.

The term imperialism has to do with a situation in which a country that tends to be more powerful continues to control a smaller country owing to the depends of the smaller country on the larger country for aid even though it is fully independent.

We can see that imperialism continues around the world especially in the developing and the less developed countries and this has continued to be an object of intense debate in many quarters.

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The maximum current that can be drawn from the battery without the terminal voltage dropping below 8.90 v is 75 A.

To calculate the maximum current that can be drawn from the battery without the terminal voltage dropping below 8.90 V, we need to use the equation: `V = E - Ir`, where `V` is the terminal voltage, `E` is the electromotive force, `I` is the current, and `r` is the internal resistance of the battery.Rearranging the equation, we get: `I = (E - V)/r`Substituting the given values, we get: `I = (9.00 V - 8.90 V)/0.012 Ω`I = 8.33 ΩΩ, or 75 A (rounded to the nearest whole number).Therefore, the maximum current that can be drawn from the battery without the terminal voltage dropping below 8.90 V is 75 A.

We know that the internal resistance of the battery is 0.012 Ω and the electromotive force is 9.00 V. The formula used to calculate the maximum current that can be drawn from the battery without the terminal voltage dropping below 8.90 V is I = (E - V)/r.Here, E = 9.00 V, V = 8.90 V, and r = 0.012 Ω.I = (9.00 V - 8.90 V)/0.012 ΩI = 83.3 ΩΩRounding off to the nearest whole number gives the answer of 75 A. Therefore, the maximum current that can be drawn from the battery without the terminal voltage dropping below 8.90 V is 75 A.

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Answer:

Damaging effects of sewage dumps on human health include Cholera, Typoid and Dysentery.

Explanation:

Life-threatening human pathogens carried by sewage include cholera, typhoid and dysentery. Other diseases resulting from sewage contamination of water include schistosomiasis, hepatitis A, intestinal nematode infections, and numerous others.

Answer:

1) Superposition results in adding the two waves together. Constructive interference is when two waves superimpose and the resulting wave has a higher amplitude than the previous waves. Destructive interference is when two waves superimpose and cancel each other out, leading to a lower amplitude.

I'm sorry thats all I can help with

Answer:

Turn off the second drip and then add a barrier with one slit. What do you observe on the right side of the wall? What do you observe on the left side of the wall? From a physics perspective, explain your observations of what is happening on both sides of the barrier.

Explanation:

 The speed and amplitude of the waves are affected when hitting the barrier. The two waves reflect off the barrier and they travel in opposite directions.

Answer:

Assess what information you are given. Use this method if you know:

the total distance covered by one person or vehicle; and

the total time it took that person or vehicle to cover the distance.

Explanation:

Hope this helps! I might be wrong, so tell me if I am

Answer:

Average speed can be calculated by dividing the total distance the object travels by the total amount of time it takes to travel that distance.

Explanation:

This is as much as I can help you, i don't know much else on how to do that ;w; sorry

Answer: 14

Explanation: 35•0.40

The minimum force to start this block moving is 14N,formula to be used to find  minimum force(F= μ N

those minimal steps, including the use of force, required to defuse a crisis or protect oneself from an aggressive act or hostile intent. Once the target obeys orders or stops taking hostile action, all actions must stop.

To solve such problems, you must find the second derivative: The force is at its minimum if the second derivative is positive; at its maximum if the second derivative is negative.

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If the angular momentum is  5.0 kg⋅m²⋅s, you are riding down the road at  13.12 m/s.

To determine the speed at which you are riding down the road based on the given angular momentum, we can use the equation:

l = I * ω

Where:

l is the angular momentum

I is the moment of inertia

ω is the angular velocity

The moment of inertia of a solid disk can be calculated as:

I = (1/2) * m * r²

Substituting the given values into the equation:

I = (1/2) * 2.0 kg * (0.38 m)²

I ≈ 0.1448 kg⋅m²

Now, rearranging the equation for angular momentum, we have:

ω = l / I

ω = 5.0 kg⋅m²⋅s / 0.1448 kg⋅m²

ω ≈ 34.53 rad/s

Finally, to determine the linear speed at which you are riding down the road, we can use the relationship between angular velocity and linear velocity:

v = ω * r

Substituting the values:

v = 34.53 rad/s * 0.38 m

v ≈ 13.12 m/s

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Answer:

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

force = mass × acceleration

From the question we have

force = 40 × 5

We have the final answer as

Hope this helps you

Answer:

0.125

Explanation:

acellus

Answer:

sorry

Explanation:

When dumped, it would rebound all the way up to the original height.

If there is no kinetic energy lost during contact, the collision is entirely elastic. In an inelastic collision, some of the kinetic energy is converted into another kind of energy during the contact.

The system's overall kinetic energy, which includes the interacting items, remains constant both before and after the impact. A very buoyant ball might serve as an illustration of an elastic collision. If you dropped it, it would return to its original height after bouncing all the way down.

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The theory of plate tectonics explains the movement of the plates by convection cells in the upper mantle. Therefore, option (A) is correct.

Plate tectonics can be described as the outer shell of the earth divided into various plates that slide over the mantle and the rocky layer above the core. These plates are extremely hard and rigid shells in comparison to Earth’s mantle and the strong outer layer is called the lithosphere.

The earth’s lithosphere is constructed of 7 to 8 major and many minor plates. The lithosphere is hard as well as the rigid outermost shell of the earth that is broken up into plates. When tectonic plates meet, the relative motion of the plates tells the kind of boundary such as convergent, divergent, or transform.

Plate tectonics also affects humans as causes volcanism, earthquakes, recycling of elements within the biosphere as well as mountain-building, etc.

Therefore, the theory of plate tectonics explains the movement of the plates by convection in the upper mantle.

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The tapered shape of the wheel rims that ride on railroad tracks allows for both opposite wheels to vary their diameters and travel at different linear speeds for the same rotational speed. This design is crucial for ensuring that trains can smoothly and efficiently travel along the tracks without causing damage or excessive wear and tear.

When a train travels along a curved track, the outer wheel must travel a greater distance than the inner wheel in order to stay on the track. If the wheels were the same diameter, the outer wheel would have to rotate faster than the inner wheel, causing it to slip and slide along the rails. This can result in a phenomenon known as "railroad tracks," where the wheels leave behind a series of flat spots on the rails.

To avoid this problem, train wheels are designed with a tapered shape, where the diameter of the wheel gradually decreases towards the center of the axle. This allows the outer wheel to effectively increase its diameter and travel at a slightly faster linear speed than the inner wheel, while still maintaining the same rotational speed. As a result, the train can smoothly travel along the curved track without causing any damage or excessive wear and tear.

Overall, the tapered shape of train wheel rims is an essential design feature that helps to ensure the safe and efficient operation of trains on railroad tracks.

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Answer:

2515.7N

Explanation:

First step is to find the acceleration:

U = 0 and V =58.7 m/s

a = (V-U)/t

where, t = 3.5s

a = 58.7/3.5

so, in order to find the net force,

F= ma

= 150kg × 58.7/3.5

= 2515.7 N

The current through the nichrome wire of the heater when it is turned on is: 12.5 A

The current through the nichrome wire of the heater when it is turned on is calculated by dividing the power rating of the heater (1500 W) by the potential difference (120 V), resulting in a current of 12.5 A.

To explain further, power (P) is the rate of energy transfer, and is equal to the product of the potential difference (V) and the current (I). Therefore, P = VI. In this example, 1500 W = 120 V x I. Rearranging the equation, we find that I = P/V, resulting in I = 1500 W/120 V, which is equal to 12.5 A.

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Answer:

Change in the magnetic field

The Sun's interior is made up of three main parts: the convective zone, the radiative zone, and the core. At the center is the core. It is the hottest area, where the Sun's nuclear fusion reactions take place.

Nuclear fusion occurs when elements collide with one another to form a heavier element, such as when hydrogen and helium fuse at the core of the Sun.

Hydrogen, the lightest element in the universe, has billions and billions of atoms in its core. These atoms are pushed so close together by heat and enormous pressure that they squish together to form new, heavier atoms. The term for this is nuclear fusion.

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The joists must be spaced approximately 0.00548 mm apart, center to center, to ensure that the maximum stress in the joists does not exceed 7 N/mm².

To determine the distance apart, center to center, at which the joists must be spaced, we can use the formula for maximum stress in a simply supported beam:

σ = M / (b * d²)

Where:

σ is the maximum stress (7 N/mm²),

M is the bending moment,

b is the width of the joist (110 mm),

d is the depth of the joist (300 mm).

The bending moment (M) can be calculated using the uniformly distributed load (w) and the span of the joists (L):

M = (w * L²) / 8

Given that the load is 16 kN/m² and the span is 4 m, we can convert the load to N/mm²:

w = 16 kN/m² = 16 N/mm²

Substituting the values into the equation for the bending moment:

M = (16 N/mm² * (4 m)²) / 8

M = 32 N/mm

Now we can substitute the values for M, b, d, and σ into the formula for maximum stress:

7 N/mm² = (32 N/mm) / (110 mm * (300 mm)²)

7 N/mm² = (32 N/mm) / (110 mm * 90000 mm²)

Distance (center to center) = (32 N/mm) / (7 N/mm² * 110 mm * 90000 mm²)

Distance (center to center) ≈ 0.00548 mm

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Answer:

the answer is d

Explanation:

I just did this test