Approximately how many seconds does it take for sound to travel 15 metres in freshwater at 25oC

Answer:

The radius of the curve is 9,183.67 m.

Explanation:

Given;

velocity of the jet plane, v = 600 m/s

acceleration of the jet plane, a = 4g = 4 x 9.8 m/s² = 39.2 m/s²

The radius of the curve is calculated from centripetal acceleration formula as given below;

\(a = \frac{v^2}{r} \\\\r = \frac{v^2}{a} \\\\r = \frac{600^2}{39.2} \\\\r = 9,183.67 \ m\)

Therefore, the radius of the curve is 9,183.67 m.

Answer:

84.1 m

Explanation:

Δx = stopping distance = Vot + 1/2at²

find a (acceleration first):

a = ΔV/t = (0 - 26.5 m/s)/4.85 s = 5.46 m/s²

Δx = (26.5 m/s)(0.75s) + (1/2)(5.46 m/s²)(4.85 s)²

Δx = 19.9 m + 64.2 m = 84.1 m

You will hit the car!  During the 0.75 s reaction time, you've already gone 19.9 m, then you need another 64.2 m to come to a complete stop.

Answer:

The crate should be released 3,080 m in front of the target

Explanation:

Horizontal Launch

When an object is thrown horizontally with a speed v from a height of h, it describes a curved path ruled by gravity until it hits the ground.

The range or maximum horizontal distance traveled by the object can be calculated as follows:

\(\displaystyle d=v\cdot\sqrt{\frac {2h}{g}}\)

The airplane drops a crate horizontally from a height of h= 2,750 m when flying at v=130 m/s. The range or maximum horizontal distance the crate reaches is:

\(\displaystyle d=130\cdot\sqrt{\frac {2*2,750}{9.8}}\)

Operating:

\(\displaystyle d=130\cdot\sqrt{561.2245}\)

d = 3,080 m

The crate should be released 3,080 m in front of the target

Answer:

the law states that unbalanced forces cause objects to accelerate with an acceleration that is directly proportional to the net force and inversely proportional to the mass.

Explanation:

Answer:

radius=4.77cm

Explanation:

given

r=? ,h=14 , v=1000

then using the formula

\(r = \sqrt{ \frac{v}{\pi \: h} } \)

= √1000/π•14

=4.77cm

The time constant of the circuit can be determined from the formula τ = RC. The values given in the question are R = 4.00 MΩ and C = 3.00 µF. Thus, the time constant is given as:τ = RC = (4.00 × 10^6 Ω) × (3.00 × 10^-6 F) = 12 secondsb. The current in the circuit can be found by using Ohm’s law, which states that I = V/R, where V is the voltage across the circuit.

The voltage across the circuit is 12.0 V, so the current is given as:I = V/R = (12.0 V)/(4.00 MΩ) = 3.00 µAThe charge on the capacitor as a function of time can be found using the formula Q = Qmax (1 - e^(-t/τ)), where Qmax is the maximum charge that can be stored by the capacitor. The maximum charge can be found using the formula Qmax = CV, where V is the voltage across the capacitor.

The voltage across the capacitor is the same as the voltage across the circuit, which is 12.0 V. Thus, the maximum charge that can be stored by the capacitor is:Qmax = CV = (3.00 × 10^-6 F) × (12.0 V) = 36 µCThe charge on the capacitor as a function of time is given as:Q = Qmax (1 - e^(-t/τ)) = (36 µC) (1 - e^(-t/12)).

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The energy of a single photon of light that has a frequency of 9.28 × 10²² Hz is 6.15 × 10⁻¹³ Joule.

Photon energy is the energy radiated or absorbed by a single photon. The formula of photon energy is:

E = hν = hc/λ

Where

Steps to calculate the energy of a single photon

Given:

ν = 9.28 × 10²² Hz

Asked:

E = ?

Answer:

E = hν

E = 6.63 × 10⁻³⁴ × 9.28 × 10²²

E = 61.53 × 10⁻¹²

E = 6.15 × 10⁻¹³ Joule

Thus, the energy of the single photon of light is 6.15 × 10⁻¹³ Joule.

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Answer:

No

Explanation:

the unit of velocity is m/s and the velocity is written as 35m/s not 35 k/m

If your body resistance is 100,000 ohms, then the current which would flow would be: 120v/100,000Ω=0.0012 amperes, which equals 1.2mA.

You were approximately 5.72 meters away from the second baseman. The vertical drop or distance between point A and point B was approximately 0.4576 meters.

To determine the distance between you (the shortstop) and the second baseman, we can use the formula for horizontal distance (d) traveled by an object moving at a constant horizontal velocity:

d = v * t

where:

- d is the horizontal distance traveled,

- v is the horizontal velocity of the ball,

- t is the time taken.

Given that the horizontal velocity (v) is 13 m/s and the time (t) is 0.44 s, we can calculate the horizontal distance (d) as follows:

d = 13 m/s * 0.44 s = 5.72 meters

So, you were approximately 5.72 meters away from the second baseman.

To find the vertical drop or the distance between point A and point B, we need to calculate the vertical component of the ball's motion. Since the ball is thrown horizontally, it will experience a constant vertical acceleration due to gravity.

The formula to calculate the distance (d) traveled vertically in free fall is:

d = 1/2 * g * t²

where:

- d is the vertical distance traveled,

- g is the acceleration due to gravity (approximately 9.8 m/s²),

- t is the time taken.

Given that the time (t) is 0.44 s, we can calculate the vertical distance (d) as follows:

d = 1/2 * 9.8 m/s² * (0.44 s)² = 0.4576 meters

So, the vertical drop or the distance between point A and point B is approximately 0.4576 meters.

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Answer:

About 50 ft.

Explanation:

There is a danger any time you take your eyes off the road. There is also a danger of distraction before and after a sneeze.

Hoped this helped!! <3

Answer:Electrical conduction is the transfer of electrically charged particles through a medium, such as electricity traveling through the power lines in your house. Sound conduction (or acoustic conduction) is the transfer of sound waves through a medium, such as vibrations from loud music passing through a wall.

Explanation: Trust

The magnitude of the gain in v/v at the cut-off frequency depends on the transfer function of the system being considered. The cut-off frequency is typically defined .

as the frequency at which the output power of the system is half of the input power, which corresponds to a gain of -3 dB or a magnitude of 0.707 in v/v units. To calculate the gain at the cut-off frequency, one would need to know the transfer function of the system, The cut-off frequency is typically defined . which describes how the system responds to different frequencies. The gain at the cut-off frequency can then be determined by evaluating the transfer function at the cut-off frequency.

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Answer:

"Changing the amplitude of a signal is straightforward: We just need to multiply each sample with some constant number. In the case of sine waves, if what we want is a wave with amplitude a, our wave function becomes y = a * Math.sin(x)."

Explanation:

Risk*

Phát biểu nào sau đây sai?

A. Hàm lượng cacbon trong thép cao hơn trong gang.

B. Sắt là kim loại màu trắng hơi xám, dẫn nhiệt tốt.

C. Quặng pirit sắt có thành phần chính là FeS2.

D. Sắt (III) hiđroxit là chất rắn, màu nâu đỏ, không tan trong nước.

D. Sắt (III) hiđroxit là chất rắn, màu nâu đỏ, không tan trong nước.

CARRY ON LEARNING

CAN YOU BRAINLEST ME

Camping - Even on sweltering summer days, camping is a delightful outdoor activity.

However, if it's hot outside, your tent may become very uncomfortable. Thankfully, there are ways to keep your tent cool. By making the most of your supplies, setting up your tent in the ideal location, and using a tarp or umbrella to block off the sun, you may avoid the heat.

Three methods to keep the tent cool:

1. Bring your cooler of ice into the tent.

2. Use a battery-operated fan to circulate the air.

3. Open your tent’s door and vents if it has any.

4. Sleep on top of your sleeping bag to stay cool.

5. Remove the rain fly if the weather forecast doesn’t predict rain.

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Answer:

Answer:

The mechanical advantage of an inclined plane, equal to the length of the plane divided by the height. The mechanical advantage for a ramp is the ratio of the force applied to the output force. By conservation of energy, the mechanical advantage can be expressed in terms of the distance traveled.

Answer:

read more on energy education

Explanation:

The mechanical advantage of an inclined plane, equal to the length of the plane divided by the height. The mechanical advantage for a ramp is the ratio of the force applied to the output force. By conservation of energy, the mechanical advantage can be expressed in terms of the distance traveled.

The velocity flow field is irrotational and the conservation of mass is preserved.

Irrotational flow for a two-dimensional velocity field happens when

\(\frac{dv}{dx} \:-\: \frac{du}{dy} \:=\: 0\)

Conservation of mass for an incompressible happens when

\(\frac{du}{dx} \:+\: \frac{dv}{dy} \:=\: 0\)

Perimeter

Calculate the derivate in each function.

Checking the irrotational flow

\(\frac{dv}{dx} \:-\: \frac{du}{dy} \:=\: 2y - 2y = 0\)

Checking conservation of mass for an incompressible

\(\frac{du}{dx} \:+\: \frac{dv}{dy} \:=\: - 2x - 1 + 2x + 1 = 2x - 2x + 1 - 1 = 0\)

So the velocity flow field is irrotational and the conservation of mass is preserved.

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Answer:

2700

Explanation:

1m/s=3.6km/hr

The correct response is conduction.

                      Conduction provides an explanation for how heat is transferred from the hot soup to the spoon. The mechanism of heat transfer is known as conduction. It involves materials or objects coming into direct touch with one another.

                      In this instance, the spoon is in direct contact with the hot soup, allowing heat energy to transfer from the soup to the spoon. The particles of the spoon vibrate more vigorously as particles in the soup have a higher temperature, which raises the temperature of the spoon.

                      Whereas convection is the process of transferring heat by the circulation or stirring of a fluid, such as hot soup. In this situation, radiation which is the transfer of heat by electromagnetic waves is not happening. Examples of radiation: are sunrays, microwaves from an oven, X-rays from an X-ray tube, and gamma rays from radioactive elements.

Correct question:

"A spoon becomes warmer as it rests in a cup of hot soup." Choose the phenomenon causing this among the given options:

conduction

convection

radiation

convection

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Answer:

C

Explanation:

The acceleration will be negative, as in the problem statement, the upwards direction is defined as positive (the object is shot upwards and has a positive velocity), so immediately, we can eliminate A and B.

You can then use the kinematics equation:

\(v=v_o+at\), where

a= -9.8 m/s^2 (acceleration due to gravity)

t= 4 s (time)

v\(_0\)= 20 m/s (initial speed)

when you solve, the final velocity is -19.2 m/s, so the velocity is negative (the object is on its way down).  

The amount of charge that passes through a 3.0 amp television in 1.3 hours would be 14040 Coulombs.

I = Q / T

Let us first convert the time period of hours into seconds

1 hour = 3600 seconds

1.3 hours = 1.3 × 3600 seconds

              =  4680 seconds

By using the above relation between electric current and electric charge

and by substituting the respective values of the charge and the time period

I = Q / T

3 = Q / 4680

Q = 3 × 4680

  = 14040 Coulombs

A charge is a fundamental property of matter that describes the amount of electric charge a particle possesses. Charged particles, such as electrons and protons, interact with each other through electromagnetic force, which is one of the four fundamental forces of nature. The charge can be either positive or negative, and opposite charges attract while like charges repel.

A charge is conserved, which means that the total amount of charge in a closed system remains constant. This conservation law is an essential principle in many areas of physics, including electromagnetism, quantum mechanics, and particle physics. The charge also plays a significant role in electrical phenomena, including circuits, electric fields, and electromagnetic radiation. It is essential to understand the charge and its properties to comprehend many aspects of the physical world around us.

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Two figures with the same size and shape are called congruent figures. This means that the two figures are identical in their measurements and angles.

The congruent figures are geometric figures that have exactly the same size and shape, which means that they can be superimposed on each other without any deformation. A congruent is often written as ≅, which is read as “congruent to.” This symbol helps to signify that two figures are congruent in size and shape. So, two figures can be said to be congruent if and only if the corresponding angles and sides of the two figures are equal to each other.

Note that congruent figures have exactly the same shape, but it is important to note that they are not the same. They could have a different orientation or position in space, but this does not change their size and shape.

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Answer:

B small positive charge

Explanation:

A model can be altered in a number of ways, by importing a database, combining information, or erasing data.

The term "scientific manipulation" in behavior analysis describes the methodical organization of a variable under research in order to enable the objective analysis of the effects of the variable presence or absence on some other measurable behavior.

To manipulate data, build a database with information from many sources, clean and rearrange the content of the database, combine and remove redundant information, and then do an analysis to uncover important information.

Understanding your needs and goals, utilizing automation tools, filtering your data, and researching various manipulation tools are some strategies for manipulating data.

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Answer:

4. INTERNATIONAL ASTRONOMICAL UNION

Answer:

6. force is the pull or push which changes or tends to change the (either rest or motion) of a body.

Answer:

Acceleration denotes to rate of change of velocity

Or

Acceleration can. be both negative and positive .

Acceleration Is important because of Newtons second law which states that F=ma m

Answer:

it's D

Explanation:

its on edge