A sound wave has a frequency of 776 Hz in air and a wavelength of 0.52 m. What is the temperature of the air? Relate the speed of sound in air to temper ature in units of Kelvin, but answer in units of Celsius . Assume the velocity of sound at 0 degrees * C 327 m/s Answer in units of degc.

Answer:

63.0 x (6.02 x 10^23) = 3.79 x 10^25 atoms of gold

Explanation:

There are 6.02 x 10^23 representative particles in a mole of any substance. Multiply it by the number of moles, and you will get the number of representative particles (atoms, molecules, formula units)

Answer:

C-Electricity will flow if the electrons are bound tightly to their atoms in the material.

Explanation:

The flow of electricity through a material is determined by the condition of the electron which make of the atoms of the material. For example, in iron metal, the electron of the material is bounds tightly to their atoms. Do to this reason, the electricity can flow freely inside them unlike the plastic material which has no tightly bound electrons.

Answer:

252000 J

Explanation:

W = Pt

W = (21000 w)(12 s)

W =252000 J

Answer:

[tex]71.865\ \text{kg}[/tex]

Explanation:

Mass of car = 1400 kg

T = Time period = 0.371 s

k = Spring constant = [tex]1.21\times 10^{5}\ \text{N/m}[/tex]

Time period is given by

[tex]\dfrac{1}{T}=\dfrac{1}{2\pi}\sqrt{\dfrac{k}{m}}\\\Rightarrow m=4\dfrac{kT^2}{4\pi^2}\\\Rightarrow m=\dfrac{4\times 1.21\times 10^5\times (0.371)^2}{4\pi^2}\\\Rightarrow m=1687.46\ \text{kg}[/tex]

The 4 in the numerator is because there are 4 springs

Mass of car with people is 1687.46 kg.

Mass of people

[tex]1687.46-1400=287.46\ \text{kg}[/tex]

Mass of each person

[tex]\dfrac{287.46}{4}=71.865\ \text{kg}[/tex]

Mass of each person is [tex]71.865\ \text{kg}[/tex].

Answer:

The total cost before taxes to fence the garden is approximately $198.71

Explanation:

The given parameters for the garden are;

The diameter of the garden, D = 11 m

The cost of the fencing, UnitC = $5.75/m

The circumference of a circle, C = π·D

Therefore, the perimeter of the garden, C = π × 11 m ≈ 34.5575 m

The total cost before taxes to fence the garden, T = C × UnitC

∴ The total cost before taxes to fence the garden, T, is given as follows;

T ≈ 34.5575 m × $5.75/m ≈ $198.71

The total cost before taxes to fence the garden, T ≈ $198.71

Answer:

STEP BY STEP

V = S/T

V= 10/5

V = 2 m/s

Answer:

Reigon 1

Explanation:

It has the higest rate of landslides currently

Answer:

the văd and food are exemple of energy

Answer:

the gas and food are example of energy

Explanation:

EDGE 2021

Explanation:

A roller coaster is released from the top of a track that is 125 m high. Find the roller coaster speed when it reaches ground level. 75. A 1500 kg car, moving at a speed of 20 m/s comes to a halt. How much work was done .

The roller coaster speed when it reaches to ground level is 15.65 m/sec

Given-

Roller coaster is released at a height of 125 meters.

It is known that, square of the final velocity [tex]v[/tex] of the body is equal to the sum of the square of initial velocity [tex]v_{10}[/tex] and the product of the twice of acceleration [tex]a[/tex] and displacement [tex]d[/tex]. It can be written as,

[tex]v^{2} =v_{0}^2+2ad[/tex]

Roller coaster released from rest therefore initial velocity is zero.

[tex]v^{2} =0+2ad[/tex]

[tex]v^{2} =2ad[/tex]

Roller coaster will fall towards the ground with an acceleration equal to gravity g and height of 125 m. therefore,

[tex]v^{2} =2\times g\times 125[/tex]

[tex]v^{2} =2\times 9.8\times 125[/tex]

[tex]v^{2} =2450[/tex]

[tex]v=15.65[/tex]

Hence, the roller coaster speed when it reaches to ground level is 15.65 m/sec.

For more about the velocity, follow the link below-

https://brainly.com/question/862972

Answer:

do u still need the answer it has been 2 weeks ?

Explanation:

Answer:

see below

Explanation:

2 Hz, means 2 complete waves are produced in one second, so

2 waves ----- 1 second

2 x 60 -------1 x 60

120 waves ------60 seconds

hope this helps,

please mark it

Given:

Frequency= 2Hz

Number of waves = ?

= 120 waves

Therefore, the number of waves that will be formed in one minute is 120 waves

Learn more at : https://brainly.com/question/23020230

The time between two new Moon phases or two full Moon phases is 29.5 days. ... The difference of 29.5 and 27.3 is that while the Moon is orbiting the Earth, the Earth is moving along in its orbit so it takes longer for the Moon to reach the same position relative to the Sun.

Answer:

4500N

Explanation:

Force =mass into acceleration

So 1500 into 3 you will get 4500

Answer:

yes he does

Explanation:

Answer:

a change of position in relation to another object.

Explanation:

Motion can be defined as a change in the location (position) of a physical object or body with respect to a reference point.

This ultimately implies that, motion would occur as a result of a change in location (position) of an object with respect to a reference point or frame of reference i.e where it was standing before the effect of an external force.

A reference point refers to a location or physical object from which the motion (movement) of another physical object or body can be determined.

Mathematically, the motion of an object is described in terms of acceleration, time, distance, speed, velocity, displacement, position, etc.

Hence, motion is a change of position in relation to another object.

Answer:

F=ma

a=F/m=20/5=4 m/s^2

Answer:

1 is community 2 habitat 4 producer 5 consumer 6 food chain 7 predator 8 prey sorry I don't know 4

Answer:

ikn

Explanation:

Answer:

the distance is 15+20=35 cm

Answer:

This came to mind

Explanation:

when a cannon fires (in real life or in the movies) have noticed that the cannon recoils, sliding backwards after the explosion. Again, a non-zero net force on the cannon changes its momentum.

Answer:

The combined velocity of Sally and the sled is 1.688 meters per second.

Explanation:

Let suppose that Sally collides inelasticly, meaning that final velocity of Sally-sled system can be determined solely by Principle of Momentum Conservation:

[tex]m_{S}\cdot v_{S, o} + m_{s}\cdot v_{s,o} = (m_{S}+m_{s})\cdot v[/tex] (1)

Where:

[tex]m_{S}[/tex] - Mass of Sally, measured in kilograms.

[tex]m_{s}[/tex] - Mass of the sled, measured in kilograms.

[tex]v_{S,o}[/tex] - Initial velocity of Sally, measured in meters per second.

[tex]v_{s,o}[/tex] - Initial velocity of the sled, measured in meters per second.

[tex]v[/tex] - Final velocity of the Sally-sled system, measured in meters per second.

If we know that [tex]m_{S} = 54\,kg[/tex], [tex]m_{s} = 10\,kg[/tex], [tex]v_{S,o} = 2\,\frac{m}{s}[/tex] and [tex]v_{s,o} = 0\,\frac{m}{s}[/tex], then the final velocity of the system is:

[tex]v = \frac{m_{S}\cdot v_{S,o}+m_{s}\cdot v_{s,o}}{m_{S}+m_{s}}[/tex]

[tex]v = 1.688\,\frac{m}{s}[/tex]

The combined velocity of Sally and the sled is 1.688 meters per second.

Answer:

The movement of a roller coaster is accomplished by the conversion of potential energy to kinetic energy. The roller coaster cars gain potential energy as they are pulled to the top of the first hill. As the cars descend the potential energy is converted to kinetic energy. Roller coasters rely on gravity to take them to the end of the track. This involves two types of energy, potential energy and kinetic energy.

Explanation: my mom told me lol ..

Answer:

The movement of a roller coaster is accomplished by the conversion of potential energy to kinetic energy. The roller coaster cars gain potential energy as they are pulled to the top of the first hill. As the cars descend the potential energy is converted to kinetic energy.

Explanation:

That's gonna help right?

Answer:

Wood, metal, Stone

Explanation:

Answer:

Thermal resistance,Specific Heat Capacity,Density

Explanation:

Answer:

draw the two atomic structures and then focus in on the electrons either gaining or losing and draw them with arrows and dots

Explanation:

Answer:

human body contain 80% water and water is a good condition of current because our body fluid contain different type of salt that increase the current conductivity

Answer:

No, because a scientific law is always absolutely true, no matter what a vote could not change a scientific law. People can vote how fast the speed of light is per second, but light will always be the speed it is no matter what.

Answer:

1. 7.5 km/h

2. 1 hour, 52 minutes, 30 seconds

3. 0.8 Joules

4. 13.33 mph

5. 19456 Joules

6. 10.5 kg

Explanation:

Answer:

Kinetic Energy

Explanation:

Energy that a moving object has due to its motion is Kinetic Energy.