What does wave speed only changes based on?

Answers

Answer 1

Answer:

waves change based on what they are traveling through

Explanation:


Related Questions

if a beetle is travelling at a speed of 2 cm/sec how far will it go in 1 minute

Answers

Answer: 120cm

Explanation: It will go 120cm because theres 60 sec in one minute and each second the beetle is travelling 2cm.

) Determine the local sidereal time at an observatory located at
a longitude of 30° E if Betelgeuse, which has a right ascension of
5h 55m, crossed the Greenwich meridian 6.0 sidereal hours
earlier.

Answers

The local sidereal time at the observatory located at a longitude of 30° E is approximately 208.75 degrees since Betelgeuse crossed the Greenwich meridian.

To determine the local sidereal time at the given observatory, we need to calculate the time elapsed since Betelgeuse crossed the Greenwich meridian.

First, we convert the right ascension of Betelgeuse from hours and minutes to decimal form. Since 1 hour is equal to 15 degrees of right ascension, and 1 minute is equal to 0.25 degrees, we have:

5 hours 55 minutes = (5 × 15) + (55 × 0.25) = 75 + 13.75 = 88.75 degrees.

Next, we calculate the time difference between Betelgeuse crossing the Greenwich meridian and the current time. Since 1 sidereal hour is equal to 15 degrees of Earth's rotation, and the given time difference is 6.0 sidereal hours, we have:

Time difference = 6.0 × 15 = 90 degrees.

Now, we can calculate the local sidereal time at the observatory by adding the longitude of the observatory (30° E) to the accumulated time difference:

Local sidereal time = 88.75 degrees + 90 degrees + 30 degrees = 208.75 degrees.

Therefore, the local sidereal time at the observatory located at a longitude of 30° E is approximately 208.75 degrees.

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An object near the surface of planet X falls freely
from rest and reaches a speed of 12.0 meters per
second after it has fallen 14.4 meters. What is the
acceleration due to gravity on planet X?

Answers

Answer:

5.00 m/s^2

Explanation:

A boy who exerts a 300-N force on the ice of a skating rink is pulled by his friend with a force of 75 N, causing the boy to accelerate across the ice. If drag and the friction from the ice apply a force of 5 N on the boy, what is the magnitude of the net force acting on him? (1 point)
A) 380 N
B) 80 N
C) 70 N
D) 370 N

Answers

Answer:

a is the answer

Explanation:

Answer:

C) 70 N

Explanation:

Don't listen to the person above me lol

An electron is placed between equal and oppositely charged parallel plates separated by 10 mm. It experiences an acceleration of1.75×10 ∧ 14 m/s ∧ 2. What is the potential difference between the charged parallel plates? Image size: s ML Max Please enter a numerical answer below. Accepted formats are numbers or "e" based scientific notation e.g.0.23, 2 , 1e6.5.23e−8

Answers

The potential difference between the charged parallel plates, charged parallel plates separated by 10 mm is 3.5 x 10³.

The potential difference is directly inversely proportional to the distance between the plates since the electric field is kept constant.

We shall assert in this situation that if the distance between the plates is lowered, the potential difference between the plates will also decrease.

The difference in potential between two places in a circuit represents the energy needed to transport a unit charge, or one coulomb, from one point to the other. Volts or joules per coulomb are used to express potential difference.

capacitance of parallel plate capacitor

c = ε A / d , d is distance between plates , A is surface area , ε is constant

As d becomes two times , Capacitance c = 1/ 2 times ie c / 2

potential V = Q / C

Q is constant , potential

v = Q / c /2

= 2 . Q / C

= 2 V

So potential difference becomes 2 times.

NEW P D = 1.75 X 2

= 3.5 x 10³

potential difference between the charged parallel plates is 3.5 x 10³

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Which of these stars has the shortest life expectancy?
a. an isolated 1Msun star
b. a 1Msun star in a closed binary system with a 0.8Msun star
c. a 1Msun star in a closed binary system with a 2Msun star

Answers

A 1Msun star in a closed binary system with a 2Msun star.

Systems in which the two stars are close to each other are called close binary star system.

The most massive stars have the shortest lifespans. The reason is that they have most fuel, they burn it so enormously that their lifetimes are very short. As a 1Msun star in a closed binary system with a 2Msun star becomes the massive star so it has the shortest life expectancy.

a. No, an isolated 1Msun star has not the shortest life expectancy.

b. No, a 1Msun star in a closed binary system with a 0.8Msun star has not the shortest life expectancy.

c. Yes, A 1Msun star in a closed binary system with a 2Msun star has the shortest life expectancy.

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a car traveling at 27 m/s hits a tree. if the front end of the car is 1.2 meters, what is the acceleration rate of the car.

Answers

The acceleration rate of the car travelling at 27m/s in 1.2metres is 303.8m/s².

How to calculate acceleration?

Acceleration of a body refers to the amount by which a speed or velocity increases. The acceleration of a moving body can be calculated using one of the equation of motion as follows:

v² = u² + 2as

Where;

v = final velocityu = initial velocitya = accelerations = distance

According to this question, a car traveling at 27 m/s hits a tree. if the front end of the car is 1.2 meters, the acceleration rate of the car can be calculated as follows:

27² = 0² + 2(a)(1.2)

729 = 2.4a

a = 303.8m/s²

Therefore, 303.8m/s² is the acceleration of the car.

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The figure shows a 100-kg block being released from rest from a height of 1. 0 m. It then takes 0. 53 s for it to reach the floor. What is the mass m of the block on the left? there is no friction or mass in the pulley, and the connecting rope is very light.

Answers

The mass m of the block on the left is 16 Kg , correct answer.

What is friction?

Friction is a force that prevents two solid objects from rolling or sliding over one another. Although frictional forces, such the traction required to walk without slipping, may be advantageous, they can provide a significant amount of resistance to motion.

Think about how a 100 kilogramme block would move.

beginning speed (Vi) = 0 m/s

a stands for speed.

d=displacement=1 m

Time taken is t = 0.53 seconds.

Using the formula:

d=Vi t+(0.5)a t2

1 = (0) (0.53) + (0.5) a (0.53) (0.53)

2

a = 7.12 m/s2

Acceleration for an at wood machine is expressed as

7.12 = (100 - m) (9.8)/ (100 + m)

m = 15.84 kg

m = 16 kg

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3. When a person is outside of the system and they add energy to the
system, we show this energy as

Answers

Answer:

We show added energy to a system as +Q or -W

Explanation:

The first law of thermodynamics states that, in an isolated system, energy can neither be created nor be destroyed;

Energy is added to the internal energy of a system as either work energy or heat energy as follows;

ΔU = Q - W

Therefore, when energy is added as heat energy to a system, we show the energy as positive Q (+Q), when energy is added to the system in the form of work, we show the energy as minus W (-W).

Define the following:
Variable
Data
Control
Technology
Hypothesis
Physical Science
Experiments

Answers

Answer:

Variable- not consistent or having a fixed pattern; liable to change

Data- facts and statistics collected together for reference or analysis

Control- a group or individual used as a standard of comparison for checking the results of a survey or experiment

Technology- the application of scientific knowledge for practical purposes, especially in industry

Hypothesis- a supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation

Physical Science- the sciences concerned with the study of inanimate natural objects, including physics, chemistry, astronomy, and related subjects

Experiments- a scientific procedure to make a discovery, test a hypothesis, or demonstrate a known fact

Explanation:

The gravitational acceleration on the surface
of planet Zeb is the same as on the surface of
the earth, but planet Zeb has twice the radius
of the earth. What must be the ratio of the mass of
planet Zeb to the mass of earth?
1) 1/8
2)2
3)8
4) 1/4
5) 1 (the same since g is the same)
6) 1/10
7)4
8)10
9)6

Answers

Answer:

The ratio of the mass of planet Zeb to the mass of Earth must be 8.

Explanation:

The gravitational acceleration on the surface of a planet is determined by the mass of the planet and its radius. The equation is g = GM/r^2, where G is the gravitational constant, M is the mass of the planet, and r is the radius of the planet.

If we assume that the gravitational acceleration on the surface of both planets is the same, we can set the equation for Earth equal to the equation for planet Zeb and solve for the ratio of the mass of planet Zeb to the mass of Earth.

g(earth) = GM(earth)/r(earth)^2 = GM(zeb)/r(zeb)^2

We know that r(zeb) = 2 * r(earth)

so,

GM(earth)/r(earth)^2 = GM(zeb)/(2*r(earth))^2

GM(zeb)/GM(earth) = (2*r(earth))^2 /r(earth)^2

GM(zeb)/GM(earth) = 4*4

GM(zeb)/GM(earth) = 16

So the ratio of the mass of planet Zeb to the mass of Earth is 16/1 = 8

a shaft is made of a material for which σy=55ksiσy=55ksi . part a determine the maximum torsional shear stress required to cause yielding using the maximum shear stress theory

Answers

The maximum torsional shear stress required to cause yielding using the maximum shear stress theory is 27.5 ksi.

The maximum shear stress theory states that yielding will occur when the maximum shear stress in a material reaches half of its yield strength. Therefore, the maximum torsional shear stress required to cause yielding can be calculated as half of the yield strength.

Given σy=55ksi, the maximum torsional shear stress required to cause yielding can be calculated as 27.5 ksi (i.e., 55 ksi divided by 2).

This result implies that if the maximum torsional shear stress in the shaft exceeds 27.5 ksi, yielding will occur in the material. Therefore, it is essential to ensure that the maximum torsional shear stress in the shaft remains below this value to avoid failure.

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What is the initial velocity of a projectile that travels a total horizontal distance of 15 m in 2.0 seconds when shot over level ground?

Answers

You welcome, hope its correct and on time
What is the initial velocity of a projectile that travels a total horizontal distance of 15 m in 2.0

A table exerts a force on the ground. The ground exerts

A. no force on the table
B. a greater and opposite force on the table
C. an equal and opposite force on the table
D. a lesser an opposite force on the table

Answers

Answer:

hey from what I know the answer is C

Explanation:

When a book is kept on a table , weight (gravitational force) of book acts on table vertically downwards and as a reaction of weight , table also exerts an equal and opposite ( upward) force on book .

If a car has a mass of 200 kilograms and produces a force of 500 N, how fast will the car accelerate?
100 m/s2
2.5 m/s2
0.25 m/s2
25 m/s2

Answers

Answer:

B

Explanation:

F = ma

500N = 200 × a

200a. = 500N

a. =. 500N/200

a. =. 2.5m/s²

PLEASE GIVE BRAINLIEST.

Answer:

B

Explanation:

F = ma

500N = 200 × a

200a. = 500N

a. =. 500N/200

a. =. 2.5m/s²

Hope this helps

Your nephew rides a kiddy train at the local carnival. The train, which has a mass of , rounds a curve with a radius of . The rails can exert a maximum force of in the radial direction. What is the maximum speed of the train without derailing?

Answers

In this particular case, the kiddy train can travel at a maximum speed of 8 meters per second without derailing when it rounds the curved track with a given radius and mass, while the rails exert the maximum radial force they can handle.

What is the formula to calculate the maximum speed of a train rounding a curve without derailing?

To determine the maximum speed of the train without derailing, we need to consider the balance between the centrifugal force and the force of friction. The centrifugal force tries to pull the train off the rails while the force of friction keeps it on the rails.

If the centrifugal force exceeds the force of friction, the train will derail. The maximum speed of the train without derailing can be calculated using the formula v = √(rg), where r is the radius of the curve and g is the acceleration due to gravity.

For instance, if the mass of the train is 500 kg, and the radius of the curve is 10 meters, and the maximum force in the radial direction that the rails can exert is 2000 N, the maximum speed of the train without derailing can be calculated as follows:

v = √((r * F) / m)

v = √((10 * 2000) / 500)

v = 8 m/s

Therefore, the maximum speed of the train without derailing in this scenario is 8 m/s.

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Definition of complex machine

Answers

A complex machine is a machine made up of two or more simple machines that make your work easier to do. There are six simple machines from which all complex machines are made. They include: The lever. The inclined plane

Answer:A complex system is a system composed of many components which may interact with each other.

Explanation: hope this helped!

Elements with low specific heat values have which characteristic?

Answers

Explanation:

lower number of atoms and gram

brainliest expected and your welcome

Answer:

low atomic mass

high thermal energy

low kinetic energy

low number of atoms per gram

On hot sunny days or days with thin clouds, the temperature over the land is warmer than the temperature over the water. The warmer air rises and the cooler air moves over the land, producing sea breezes. This means that,
A: Water takes longer to heat up than the land
B: Soil warms up more slowly than the water
C: The air above the land becomes cool and rises
D: Land takes longer to heat up tan the water

Answers

Answer:

i think it would be a but i am not 100% sure on that

Hazel is analyzing the written information and the image she found. Figure 1 shows that low-frequency radiation is generally considered to be non-ionizing, while high-frequency radiation is generally considered to be ionizing. Use the drop-down menus to complete the statements that support this.

Low-frequency electromagnetic waves have (low-high)
energy. High-frequency electromagnetic waves have (low-high)
energy. High-frequency waves are (more-less)
likely to ionize an atom because of their greater (energy-speed)
.

Hazel is analyzing the written information and the image she found. Figure 1 shows that low-frequency

Answers

High-frequency waves are (more-less) likely to ionize an atom because of their greater (energy speed) for low- radiofrequency is generally considered to be non-ionizing, while high- radiofrequency is generally considered to be ionizing.

Microwaves and radio waves are examples of radiofrequency (RF) radiation, which is at the low-energy end of the electromagnetic spectrum. It belongs to the non-ionizing radiation class. Non-ionizing radiation lacks the energy to expel an atom's electrons.

A minimally invasive procedure known as radiofrequency ablation, or RFA, reduces the size of tumors, nodules, and other growths in the body. RFA is used to treat a variety of ailments, such as benign and cancerous tumors, chronic venous insufficiency in the legs, and persistent back and neck pain.

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Approximately what percentage of the calories you take in every day are consumed by your brain's activity?

Answers

it consumes about 20%

At any instant, how many water molecules are ionized in 1 l of pure water at ph 7.0? (b) express this number as a percentage of the total water molecules

Answers

The number of water molecules which are ionized in 1L of pure water at pH 7.0 is equivalent to 6×10¹⁶ molecules.

The number as a percentage of the total water molecules is 1.8×10⁻⁷ % .

At pH 7.0, [H⁺]=10⁻⁷ M, so 10⁻⁷  moles of water molecules have ionized. This is almost equal to (10⁻⁷  mol)(6×10²³ molecules. mol⁻¹) = 6×10¹⁶ molecules.

For the second part of the question let the concentration of water be 55.5 M, then there are (55.5 mol)(6×10²³ molecules.mol⁻¹) = 3.3×10²⁵ molecules of water in 1L. The fraction of ionized molecules is 6×10¹⁶ molecules)/(3.3×10²⁵ molecules) = 1.8×10⁻⁹ or 1.8×10⁻⁷ %.

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Does earths gravitational force field act on objects that aren’t touching earths surface?

( Explanation needed ASAP NEEDED

Answers

Answer:

no the earth gravitational force field

Answer:

yes, it acts on everything within the earth

Explanation:

The density of pure diamond is 3.5 g/cm3. what is the volume of a diamond with a mass of 0.25 g?

Answers

The volume is 0.21 cm³.

The density of the pure diamond is: ρdiamond = 3.5g/cm³

The mass of the diamond is: m = 0.75g

Write the expression for the density of the diamond.

ρdiamond = m/V

Here, the volume is V.

Substitute the known values.

(3.5g/cm³) = 0.75gV

V = 0.75g/3.5g/cm³

V = 0.2142857143cm³

V ≃ 0.21cm³

Thus, the volume is 0.21 cm³.

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What is the fraction of the hydrogen atom's mass (11h) that is in the nucleus? the mass of proton is 1.007276 u, and the mass of 11h atom is 1.007825 u

Answers

The mass fraction of the hydrogen atom is 0.9995 u.

Calculation:

We know that mass fraction can be determines as,

Mass fraction = Mass of proton/mass of H atom

Given,

Mass of proton = 1.007276 u

Mass of H atom = 1.007825 u

Put the values in the formula,

Mass fraction = Mass of proton/mass of H atom

Mass fraction = 1.007276/1.007825

                       = 0.9995 u

Hence, the mass fraction of the hydrogen atom is 0.9995 u.

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A 12-V battery causes a current of 0.80 A through a resistor.
a) What is its resistance?
b) How many joules of energy does the battery lose in a minute?
2) You buy a 75-W lightbulb in Europe, where electricity is delivered to homes at 240 V. If you use the lightbulb in the United States at 120 V (assume its resistance does not change), how bright will it be relative to 75-W 120-V bulbs?

Answers

a) The resistance will be:

R = V / I = 12 V / 0.80 A = 15 Ω

b) E = P * t = 9.6 W * 60 s = 576 Joules

2) The 75 W lightbulb used at 120 V will have a relative brightness of 18.75 W 120 V bulbs.

How to find resistance?

a) To calculate the resistance, we can use Ohm's Law, which states that resistance (R) is equal to the voltage (V) divided by the current (I). Therefore, the resistance can be calculated as follows:

R = V / I = 12 V / 0.80 A = 15 Ω

How to find joules of energy of battery lose in a minute?

b) The power (P) consumed by the battery can be calculated using the formula: P = V * I, where V is the voltage and I is the current. The energy (E) consumed in a given time period can be calculated by multiplying power (P) by time (t). In this case, since we want to find the energy consumed in a minute, the time is 60 seconds.

P = V * I = 12 V * 0.80 A = 9.6 W

E = P * t = 9.6 W * 60 s = 576 Joules

How to find brightness of a bulb?

The power of the lightbulb remains constant regardless of the voltage applied, so the power rating of the lightbulb is still 75 W. However, the brightness of a lightbulb is typically measured in terms of its luminous flux, which is not directly proportional to power. Luminous flux is measured in lumens (lm).

To determine how bright the 75 W lightbulb will be at 120 V relative to 75 W 120 V bulbs, we need to compare the luminous flux. Assuming the lightbulb's resistance remains constant, we can use the formula for power (P) in terms of resistance (R) and voltage (V): P = V^2 / R.

For the 75 W lightbulb at 240 V:

P1 = 75 W

V1 = 240 V

For the lightbulb at 120 V:

P2 = ?

V2 = 120 V

Using the formula, we can solve for P2:

P1 / P2 = (V1 / V2)^2

75 W / P2 = (240 V / 120 V)^2

75 W / P2 = 2^2

75 W / P2 = 4

P2 = 75 W / 4 = 18.75 W

Therefore, the 75 W lightbulb used at 120 V will have a relative brightness of 18.75 W 120 V bulbs.

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a student uses a spring to launch a marble vertically in the air. The mass of the marble is
0.02 kg and when the spring is stretched 0.08 m it exerts a force of 58 N. What is
the maximum height the marble can reach?

Answers

Answer:

the maximum height reached by the marble is 11.84 m.

Explanation:

Given;

mass of the marble, m = 0.02 kg

extension of the string, x = 0.08 m

force applied to the string, F = 58 N

Apply the principle of conservation of energy;

elastic potential energy = gravitational potential energy

¹/₂fx = mgh

\(h = \frac{Fx}{2mg} \\\\h = \frac{58 \ \times \ 0.08}{2 \ \times \ 0.02 \ \times \ 9.8} \\\\h = 11.84 \ m\)

Therefore, the maximum height reached by the marble is 11.84 m.

Which of the following planets or moons has an atmosphere consisting mainly of Hydrogen and Helium with some methane?

A) Venus
B) Saturn
C) Titan
D) Uranus

Answers

Saturn is the following planet or moon, and its atmosphere is primarily made of hydrogen with a small amount of methane.

The correct answer is B

What makes Saturn the best planet?

The planet Saturn is incredibly large and its rings make it incredibly gorgeous. Amazing moons as Titan reside there as well. The Solar System's Saturn is arguably the most popular and stunning planet. Compared to the rings of other planets, Saturn's are much larger and easier to see.

Where could we possibly live?

Then, only a year ago, researchers found a second Earth-like planet around Proxima Centauri, one of our nearest nearby stars. The best option we now have for maintaining human life is this planet.

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a metal block measures 10cm×2cm×2cm. What is its volume? How many blocks each 2cm×2cm×2cm have the same total volume?

Answers

40cm³ is  volume of a metal block measures 10cm×2cm×2cm and 5 blocks have the same total volume.

volume=l×b×h

volume=10cm×2cm×2cm= 40cm³

volume=l×b×h

volume= 2cm×2cm×2cm=8cm³

blocks have the same total volume= 40cm³/8cm³= 5

The space occupied inside an object's borders in three dimensions is referred to as its volume. It is sometimes referred to as the object's capacity. Finding an object's volume can help us calculate the quantity needed to fill it, such as the volume of water needed to fill a bottle, aquarium, or water tank.

A sphere is the most basic and typical form of a three-dimensional shape. We see spheres on a regular basis in the form of balls, globes, ornamental lights, oranges, etc.

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if the cooling power remains constant, what will be the temperature of the system tb after it has been in the freezer for exactly 1 hour? this temperature is off scale on the figure.

Answers

The temperature of the system after it has been in the freezer for exactly 1 hour will depend on various factors such as the initial temperature of the system, the size and power of the freezer, and the cooling efficiency of the system.

However, since the question states that the cooling power remains constant, we can assume that the rate at which the temperature of the system decreases will remain constant as well.
Assuming that the temperature of the system was initially above the freezing point (i.e., above 0°C), the temperature of the system after 1 hour in the freezer will likely be below the freezing point. This is because the cooling power will continue to remove heat from the system, causing its temperature to decrease. The exact temperature of the system after 1 hour cannot be determined without knowing the initial temperature and the cooling efficiency of the system.
The fact that the temperature is "off scale on the figure" suggests that the temperature is extremely low and cannot be measured accurately by the thermometer being used. This is not uncommon in scientific experiments, especially those involving extreme temperatures. Overall, the temperature of the system after 1 hour in the freezer will depend on various factors, but it is likely to be below the freezing point and may be off the scale of the thermometer being used.

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