the amplitude of a wave is

Answers

Answer 1

Answer:

The amplitude of a wave is a measure of the displacement of the wave from its rest position. The amplitude is shown on the graph below. Amplitude is generally calculated by looking on a graph of a wave and measuring the height of the wave from the resting position. The amplitude is a measure of the strength or intensity of the wave.

Explanation:

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Related Questions

A bullet traveling at 5.0 x10^2 meters per is brought to rest by an impulse of 50 Newton*seconds. Find the mass of the bullet.

Answers

The bullet stops moving on hitting on a surface. Hence, the impulse here is equal to the momentum. Therefore, the mass of the bullet is 0.1 Kg.

What is impulse?

Impulse in physics is the change in momentum. It is the product of the force and change in time.

hence, impulse = f. dt

When the bullet is travelling with a velocity of 500 m/s it has a momentum. When it brought to rest, momentum become zero. Thus, the momentum is equal to the impulse here.

Therefore, f.dt = m. v

f.dt = 50 N s

v = 500 m/s

m = 50 N s/500 m/s = 0.1 Kg

Therefore, the mass of the bullet is 0.1 Kg.

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A cell contains 20% solute. If it is placed in a solution with 35% solute, what will happen to the cell?

Answers

i think it will shrink because it will loose or is loosing the water. I am not very sure but i have done my research

What are the similarities and differences between these data sets in terms of their centers and their variability?
Data Set A: 12, 15, 18, 18, 22, 29
Data Set B: 13, 17, 17, 19, 20, 34
Select from the drop-down menus to correctly complete the statements.
Comparing the centers of the data sets, the median for Data Set A is Choose...
Choose.
Set A is Choose... the mean for Data Set B.
less than
equal to
greater than
the median for Data Set B. The mean for Data
4

Answers

Comparing the centers of the data sets, the median for Data Set A is equal to the median for Data Set B.

Comparing the variability of the data sets, the range for Data Set A is 17 (29-12) and the range for Data Set B is 21 (34-13), so the range for Data Set B is greater.

Furthermore, the mean for Data Set A is 19 and the mean for Data Set B is 19.83, so the mean for Data Set B is slightly greater than the mean for Data Set A.

An object is attached to a trolley with a 0.80 kg mass, which is then pushed into an identical trolley at a speed of 1.1 m / s. The two trolleys couple together and move at a speed of 0.70 m / s after the collision. Calculate the mass of the object.

Answers

The mass of the object is approximately 0.457 kg.

The mass of the object attached to the trolley can be calculated using the principle of conservation of momentum. Since the two trolleys couple together and move as a single system after the collision, the total momentum before and after the collision should be the same. Given the mass of one trolley is 0.80 kg and the initial speed is 1.1 m/s, the momentum before the collision is 0.80 kg * 1.1 m/s = 0.88 kg·m/s. After the collision, the total mass is the sum of the two trolleys, and the final speed is 0.70 m/s.

Using the momentum equation, the mass of the object can be calculated as follows:

Total momentum before collision = Total momentum after collision

0.88 kg·m/s = (0.80 kg + mass of the object) * 0.70 m/s

Solving for the mass of the object, we get:

0.88 kg·m/s = (0.80 kg + mass of the object) * 0.70 m/s

0.88 kg·m/s = 0.56 kg + 0.70 kg * mass of the object

0.88 kg·m/s - 0.56 kg = 0.70 kg * mass of the object

0.32 kg = 0.70 kg * mass of the object

Dividing both sides by 0.70 kg, we find:

mass of the object = 0.32 kg / 0.70 kg = 0.457 kg

The two trolleys collide and couple together, the total momentum before the collision is equal to the total momentum after the collision according to the principle of conservation of momentum.

The momentum of an object is defined as the product of its mass and velocity. In this case, the mass of one trolley is known (0.80 kg) and the initial speed is given (1.1 m/s), allowing us to calculate the momentum before the collision.

After the collision, the two trolleys move together at a new speed (0.70 m/s). By setting the initial momentum equal to the final momentum and solving for the unknown mass of the object, we can find its value.

In the calculation, we subtract the masses of the two trolleys from the total mass in order to isolate the mass of the object.

Dividing the difference in momentum by the product of the known mass and the new speed, we obtain the mass of the object. In this case, the mass of the object is approximately 0.457 kg.

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Please answer these questions correctly (photo is attached) I’ll give brainliest

Answers

1 non-contact force
2 gravity
3 friction
4 balanced force
5 contact force
6 combine
7 unbalanced force
8 force

An automobile traveling 88.0 km/h has tires of 72.0 cm diameter. (a) What is the angular speed of the tires about their axles

Answers

Answer:

angular speed = 67.91 rad/s

Explanation:

Given that,

The diameter of a tire, d = 72 cm

The radius of a tire, r = 36 cm = 0.36 m

Linear speed of an automobile, v = 88 km/h = 24.45 m/s

We need to find the angular speed of the tires about their axles. The relation between angular speed and angular speed is given by :

$v=r\omega\\\\\omega=\dfrac{v}{r}\\\\\omega=\dfrac{24.45 }{0.36}\\\\\omega=67.91\ rad/s$

So, the angular speed of the tire is 67.91 rad/s.

The temperature of the water was
originally 16.0°C. The specific heat of
water is approximately 4.18 J/g °C.
What is the change in thermal energy?
Assume the mass of the water is 1.00
kg. (Show your work!)

Answers

Answer: 4182 J/kg°C

Explanation: molar heat capacity is J/mole C not J/gC. 4.18 J/gC x (18.0 g / mole) = 75.2 J/moleC

a car accelerate uniformly from rest to a speed of 20m/s in 8seconds.the mass of the car is 1200kg. calculate the acceleration of the car

Answers

Answer:3000

Explanation:

given:u=0v=20m/st= 8sec

thereforea=v-u/t=20-0/8=20/8=5/2 m/som=1200 kg

thereforef=ma=1200*5/2=600*5=3000N

Suppose that you had water in a pot on a stovetop. Neglecting the material that the pot is made out of, and neglecting heat energy lost use to other processes, how long would it take for a 1000 W stovetop to raise 2.68 kg of water from 18.2oC to 53.2oC? The specific heat of water in this state is 4186 J/kg-oC. HINT: Find the amount of heat first, then look at the equation for power.

Answers

We are given the following information

Mass of water: m = 2.68 kg

Initial temperature: T1 = 18.2 °C

Final temperature: T2 = 53.2 °C

Power: P = 1000 W

Specific heat capacity of water: c = 4186 J/kg °C

We are asked to find the time required to change the temperature of the water.

Recall that the amount of heat required is given by

$\begin{gathered} Q=m\cdot c\cdot\Delta T \\ Q=m\cdot c\cdot(T_2-T_1) \\ Q=2.68\cdot4186\cdot(53.2-18.2) \\ Q=392646.8\; J \end{gathered}$

So, the amount of heat is 392646.8 joules.

Recall that power is given by

$P=\frac{Q}{t}$

Let us solve for time (t)

$\begin{gathered} t=\frac{Q}{P} \\ t=\frac{392646.8}{1000} \\ t=392.6468\; s \end{gathered}$

Therefore, the required time is 392.6468 seconds.

(Please round off as per instructions)

ONLY answer if you know FOR SURE. if your not 100% on it, DONT FREAKING ANSWER. ONLY IF YOU KNOW FOR SURE!

Which type of graph is best to use with data that shows a comparison of categories?

A. Pie Chart (Circle Graph)

B. Line Graph

C. Bar Graph

D. Frequency Table

Answers

Answer: the answer is (C)

Explanation: Bar graphs show comparisons using number comparisons

Three elements are represented by the letters A, B, and C. the three elements have the same number of valence electrons. Element C has electrons in four energy levels and element B is the lightest of the three. Elements B has a total of 12 electrons. Identify the elements.

Answers

Element B has 12 electrons. Thus, its atomic number is 12 and it is magnesium (Mg). Its group members with same number of valence electrons are Ca and Sr. C with 4 energy levels is Sr and A is Ca.

What is valence electrons?

Electrons in an atom is filled from the lowest energy level to the highest energy level. The electrons filled in the lower energy levels in the inner shells are called inner electrons pr core electrons and the electrons filled in the outer orbital or valence shell are called the valence electrons.

Given that element B has 12 electrons. The element with 12 electrons is magnesium (Mg). Elements of the same group have same number of valence electrons. The group members of Mg are Ca, Sr, Rb etc.

Here the element B is lightest among the three. Hence, the element C is just after B with same number of energy levels and it is calcium Ca. The element C with 4 energy level is strontium (Sr).

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A basketball has a circumference of .203 m.what is the radius of a baseball?

Answers

Given that the circumference of the basketball is C = 0.203 m.

We have to find the radius of basketball, r.

The radius can be calculated as

$\begin{gathered} C=2\pi r \\ r=\frac{C}{2\pi} \\ =\frac{0.203}{2\times3.14} \\ =0.032\text{ m} \end{gathered}$

Thus, the radius of the basketball is 0.032 m

How did astronomers precisely determine the length of an Astronomical Unit in the 1960s?

Answers

Answer:

Use of telemetry and radar astronomy

Explanation:

An astronomical Unit (AU) is a unit of measuring distances in outer space, which is based on the approximate distance between the earth and the Sun.

After several years of trying to approximate the distance between the Sun and the Earth using several methods based on geometry and some other calculations, advancements in technology made available the presence of special motoring equipment, which can be placed in outer space to remotely monitor and measure the position of the sun.

The use of direct radar measurements to the sun (radar astronomy) have also made the determination of the AU more accurate.

A standard radar pulse of known speed is sent to the Sun, and the time with which it takes to return is measured, once this is recorded, the distance between the Earth and the Sun can be calculated using

distance = speed X time.

However, most of these means have to be corrected for parallax errors

A wave travels at a constant speed. How does the wavelength change if the frequency is reduced by a factor of 4?

Answers

Answer:

The product of (wavelength) x (frequency) is always the same number ... the wave's speed.

So if the wavelength is somehow reduced to 1/4 its original length, the frequency is immediately multiplied by 4 . That's the only way their product can remain the same.

Explanation:

The mechanical energy of a bicycle at the top of a hill is 6000 j. The bicycle stops at the bottom of the hill by applying the brakes. If the gravitational potential energy of the bicycle-earth system is 2000 j at the bottom of the hill, how much mechanical energy was converted into thermal energy?.

Answers

Answer:

Explanation: POTENTIAL ENERGY is stored energy, energy ready to go. A race car at the starting line of a race, a bicycle on top of a hill, and students waiting to go home from school are all examples of potential energy.

A moving bicycle has mechanical energy. When you apply the brakes, the bicycle's mechanical energy is not destroyed. The mechanical energy is transformed into thermal energy. Friction between the brake pad of a car and the moving wheel transforms mechanical energy into thermal energy (heat).

During braking, 60% of the kinetic energy of the bicycle and rider is converted to thermal energy in the brake blocks.

Look at each written description and equation. Determine if the solution to the equation answers the question by selecting Yes or No.

A
A long-distance athlete can run 12
kilometer in 3 minutes. How many kilometers can he run in an hour?

12 km360 hr=12×603

Yes No B
A search and rescue drone can scan 0.5 hectare in 2 minutes. How many hectares per minute can the drone scan?

510 ha2 min=510×21

Yes No C
In 15 minutes a crew of highway workers paved 110
mile. If they work at the same rate, what portion of a mile will they pave in 1 hour?

14 hr110 mi=14×101

Yes No D
A soup recipe uses 112
cups of water for every 14
teaspoon of seasoning. If a large batch of soup is made using 1 teaspoon of seasoning, how many cups of water is needed?

32 c14 tsp=32×41

Yes No

Answers

yes no yes no no yess yes no because yes no

Which category best describes this group of shapes? rhombuses rectangles parallelograms squares II

Answers

they're parallelograms

Plzzzzz help quick 25 points
Five friends were talking about forces. This is what they said. Which friend do you agree with the most? *
Rae: I think a push is a force and a pull is something else.
Scott: I think a pull is a force and a push is something else.
Yolanda: I think a force is either a push or pull.
Miles: I think forces are neither pushes nor pulls. I think they are something else.
Violet: I think pushes and pulls are forces, but there is also another type of force that just holds things in place.

Answers

Answer:

violate violate

Explanation:

sjaknamakakakaksjjdksoaokzkv

Revolution + tilt = what

Answers

Revolution is the movement of the Earth around the Sun. The Earth takes 24 hours to complete a rotation with respect to the sun. The Earth's axis of rotation is tilted by 23.5 degrees. This tilt causes the different seasons of the year.

When traveling at top speed, a roller coaster train with a mass of 12,000 kg has a velocity of 30 m/s. The kinetic energy of the train at top speed is J. Given this kinetic energy, what is the tallest hill this roller coaster train can reach the top of? The train can climb a hill that is m high. pls help

Answers

Answer:

Kinetic energy = 5400000 J

Height, h = 45.91 m

Explanation:

Method:

Mass of the roller coaster train, m = 12,000 kg

Velocity of the train, v = 30 m/s

Kinetic energy = 1/2mv^2 (^2 stands for square)

= 1/2 x 12000 x 30 ^2

= 5400000 J

For height

In general, as,

P.E + K.E = P.E + K.E

0 + 5400000 = mgh + 0

5400000 J = 12000 kg x 9.8 m/s x h

h = 45.91 m

Answer:

A) 5,400,000

B) 46

Explanation:

Did the assignment

Priscilla is driving her car on a busy street and Harvey passes her on his motorcycle. What will happen to the sound from his motorcycle after it passes her car?
A.
The frequency of the sound will decrease.
B.
The amplitude of the sound will increase.
C.
The intensity of the sound will increase.
D.
The wavelength of the sound will decrease.
E.
The velocity of the sound will increase.

Answers

Answer:

the correct answer is A

Explanation:

This is a doppler effect exercise which is the change in frequency due to the relative movement of the sound source and the observer.

$f' = f_o \ \frac{v+v_o}{v-v_s}$

where v₀ is the speed of the observer and v_s the speed of the source, the signs correspond when the two are closing in

with this expression let's analyze the different answers

A) True. The observed change is in the frequency, in this case the two are moving away, so the expression that describes the phenomenon is

$f'= f_o \ \frac {v-v_o}{ v+v_s}$

In this case, the speed of the source is greater than the speed of the observer, so when the denominator increases faster than the numerator, consequently the frequency must decrease

B) False. The amplitude does not depend on the relative velocity

C) False. The intensity depends on the distance, by or which when increasing the distance the intensity should decrease

D) False. The speed of sound is a constant, if the frequency decreases the wavelength must increase to maintain equality

E) False. The speed of sound depends on the properties of the propagating medium, not on the relative speed of the source and the observer.

Consequently the correct answer is A

Helen is para sailing. She sits in a seat harness which is attached by a tow rope toba speedboat. The rope makes an angle of 59.9* with the horziontal and has a tension of 364N. Determine the horziontal and vertical component of the tension force

Answers

To find the horizontal and vertical components of the tension force in para sailing, we can use the basic trigonometric ratios of sine, cosine and tangent.

How to use trigonometric ratios ?First, given the rope's angle (59.9 degrees) and the tension force (364 N), we can apply the following formula to determine the tension force's horizontal component (Fx): Fx = Tension force x cos(angle) = 364 N x cos (59.9).Next, we can use the angle of the rope and the tension force to find the vertical component (Fy) of the tension force using the formula: Fy = Tension force x sin(angle) = 364 N x sin(59.9)You must convert the angle to radians because these calculations, as you should be aware, employ radians rather than degrees.As a result, the tension force's horizontal component has the following formula: Fx = 364N x cos(59.9) = 225.98N roughly.Additionally, the vertical component of the tension force is roughly 318.6N, or Fy = 364N x sin(59.9)According to these calculations, the tension force has two components: a horizontal component that is 225.98 N and a vertical component that is 318 N.

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Which diagram best shows what happens when light passes through a magnifying glass?

Answers

A magnifying glass is a simple optical device that uses a convex lens to produce a magnified image of an object.

What is a magnifying glass?

When a magnifying glass is held close to an object, the lens refracts the light that is reflected off the object and causes it to converge or come together at a point. This point is called the focal point, and it is where the magnified image is formed. The image appears larger and closer than the actual object because it is formed by the light that has been bent and converged by the lens.

The magnification produced by a magnifying glass depends on the power of the lens, which is determined by its focal length.

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Which diagram best shows what happens when light passes through a magnifying glass?

A driver travels 4.1 km west, 17.3 km north, and finally 1.2 km at an angle of 65.4 degree north of west. What is the driver’s displacement?

Answers

Answer:

Explanation:

We shall represent each displacement in vector form .

i will represent east , j will represent north .

D₁ = 4.1 west = - 4.1 i

D₂ = 17.3 north = 17.3 j

D₃ = - 1.2 cos65.4 i + 1.2 sin65.4 j

= - .5 i + 1.09 j

Total displacement

= D₁ + D₂ + D₃

= - 4.1 i + 17.3 j - .5 i + 1.09 j

D = - 4.6 i + 18.39 j

magnitude of D

= √ ( 4.6² + 18.39² )

= √ (21.16 + 338.2 )

= √359.36

= 18.95 km .

Final displacement = 18.95 km .

An object of mass 7.20 kg is projected into the air at a 55.0° angle. It hits the ground 3.40 s later. Set "up" to be the positive y-direction. What is the y-component of the object's change in momentum while it is in the air? Ignore air resistance.

Answers

Given,

The mass of the object, m=7.20 kg

The angle of projection, θ=55.0°

The time of flight, t=3.40 s

The time of flight of a projectile is given by,

$t=\frac{2u\times sin\theta}{g}$

Where u is the initial velocity and g is the acceleration due to gravity.