Which of the following is not a measurement?

0.50 ppm

120

65 mph

24°C

The time interval between the man clapping and hearing his echo is approximately 1.75 seconds.

An echo is a repetition or reflection of a sound or signal. It can be caused by sound waves bouncing off a surface, signal interference, or the repetition of a message in communication.

The speed of sound in air at room temperature is approximately 343 meters per second. When a person claps, the sound waves propagate outward in all directions and reach the school building, where they bounce off and return to the person as an echo. The time it takes for the sound to travel the distance to the building and back to the person is the time interval between the clap and the echo.

To calculate the time interval, we can use the following formula:

time = distance / speed

where distance is the total distance traveled by the sound (twice the distance from the person to the school building), and speed is the speed of sound in air.

distance = 2 x 300m = 600m

speed = 343 m/s

time = 600m / 343 m/s = 1.75 seconds (rounded to two decimal places)

Therefore, the time interval between the man clapping and hearing his echo is approximately 1.75 seconds.

Learn more about echo here:

https://brainly.com/question/9527413

#SPJ9

Answer:

Electric field intensity is a Vector Field. Electric field intensity (E, N/C or V/m) is a vector field that quantifies the force experienced by a charged particle due to the influence of charge not associated with that particle

Explanation:

The mass of the planet is  5.98 × 10^24 kg.

To calculate the mass of the planet, we can use Kepler's Third Law of Planetary Motion. This law states that the square of the period of revolution of a planet around the sun is directly proportional to the cube of the semi-major axis of its orbit.

First, we need to convert the period of the satellite's orbit to seconds. We know that there are 60 minutes in an hour, so the period can be expressed as (6 × 60 + 12) minutes, which equals 372 minutes. Multiplying this by 60 seconds, we get a period of 22,320 seconds.

Next, we need to find the semi-major axis of the orbit. In a circular orbit, the semi-major axis is equal to the radius of the orbit. Therefore, the semi-major axis is 8.8 × 10^6 m.

Now, we can apply Kepler's Third Law to calculate the mass of the planet. The formula is T^2 = (4π^2/GM) × a^3, where T is the period of revolution, G is the gravitational constant, M is the mass of the planet, and a is the semi-major axis of the orbit.

Rearranging the formula, we can solve for the mass of the planet:
M = (4π^2/G) × a^3 / T^2

Plugging in the values, we get:
M = (4 × π^2 / 6.67430 × 10^-11) × (8.8 × 10^6)^3 / (22,320)^2

Evaluating this expression, we find that the mass of the planet is approximately 5.98 × 10^24 kg.

For more such question on mass visit:

https://brainly.com/question/24191825

#SPJ8

The heaviest liquid is mercury. In order to equalize the air pressure, it only climbs 76 cm. Water will rise to a 13.6 because it is 13.6 times lighter than mercury. By a factor of 13.6, mercury is 13.6 times denser than water.

Therefore, the barometer's height would be 13.6 times higher if water were employed in place of mercury. Since water expands when it freezes, the glass tube would be broken.

Because of its high density, mercury is frequently employed in barometers, allowing for a column height that is appropriate for measuring atmospheric pressure. For example, a mercury barometer would need to be 13.6 times taller than a water barometer to measure the same change in pressure.

This is the primary justification for using mercury in thermometers. Mercury will provide accurate readings in comparison to water since it lacks the condensation property that water possesses. Mercury can be used to measure both negative and positive temperatures, whereas water cannot be used to measure either.

To know more about  mercury

https://brainly.com/question/28549362

#SPJ4

Answer:

B. is your answer

Explanation:

Have a good day

Sincerly, lipor

Short, difficult activities that push your body are called anaerobic activities.  Option b is correct

They are high-intensity exercises that do not require oxygen and primarily use stored energy sources within the muscles. Examples include weightlifting or sprinting.

Short, difficult activities that push your body are called anaerobic activity. Anaerobic activities are high-intensity exercises that do not require oxygen and primarily use stored energy sources within the muscles, such as weightlifting or sprinting. These activities help build muscle strength and improve power and speed.

Learn more about the topic of Anaerobic activities here:

https://brainly.com/question/30313496

#SPJ2

Answer:

which on a is the question

Answer:

the kinetic energy force made the not to stay in a position if the person is not careful

Calculate the horizontal component of the velocity. The horizontal component of the velocity is given by:

v_x = v * cos(theta)

where v is the original speed of the arrow and theta is the angle of projection.In this case, v = 2 m/s and theta is unknown. Solving for theta, we get:

theta = arccos(v_x / v)

theta = arccos(2 / 2) = 45 degrees

Calculate the vertical component of the velocity. The vertical component of the velocity is given by:

v_y = v * sin(theta)

In this case, v = 2 m/s and theta = 45 degrees. Solving for v_y, we get:

v_y = 2 * sin(45 degrees) = 1.414 m/s

Calculate the time of flight. The time of flight is given by:

t = 2 * v_y / g

In this case, v_y = 1.414 m/s and g = 10 m/s^2. Solving for t, we get:

t = 2 * 1.414 / 10 = 0.283 seconds

Calculate the height of the arrow. The height of the arrow is given by:

y = v_y * t - 0.5 * g * t^2

In this case, v_y = 1.414 m/s, t = 0.283 seconds, and g = 10 m/s^2. Solving for y, we get:

y = 1.414 * 0.283 - 0.5 * 10 * 0.283^2 = 0.303 meters

Therefore, the angle of projection is 45 degrees and the height of the arrow is 0.303 meters.

For two runners  running in a 500 meter dash and runner, the speeds of both runners  is mathematically given as

v1=25m/s

v2=20m/s

and the first runner is faster

Generally, the equation for the speed  is mathematically given as

v=d/t

Therefore, for first runner

v=500/20

v1=25m/s

For 2nd runner

v=500/25

v2=20m/s

Read more about Speed

https://brainly.com/question/4931057

ANSWER:

12.3 m/s

STEP-BY-STEP EXPLANATION:

The vertical speed can be calculated by means of the following equation:

The speed in both cases is the same, since the angle remains the same.

We can calculate the initial speed in y since we know the angle, the value s would be the height, therefore, we substitute and calculate the final speed in y:

The speed would be 12.3 m/s in both cases

Answer:

The magnitude of displacement vector 2D-E is approximately 14.49 units. The calculation is done using the Pythagorean theorem after finding 2D-E by multiplying vector D by 2 and subtracting vector E.

Explanation:

The value of 2D-E must first be calculated in order to ascertain the displacement 2D-E's magnitude. Vector D may be multiplied by two to accomplish this, and the result can be obtained by deducting vector E:

2D-E = 2(6i + 3j - k) 4i + 5j + 3k = 8i + 11j - 5k - (4i - 5j + 3k) = 12i + 6j - 2k

We can use the Pythagorean theorem to determine the magnitude of the displacement vector now that we know it:

|2D-E| = √(8² + 11² + (-5)²) = √(64 + 121 + 25) = √210 ≈ 14.49

The displacement 2D-E magnitude is therefore 14.49 units or such. From the object's beginning location to its ultimate position, the displacement's entire length is shown by this. Being a scalar variable, the displacement's magnitude does not reveal the displacement's direction.

To know more About displacement's direction

https://brainly.com/question/218648

Answer:

Explanation:

It's graph A because the pressure in the tire is increasing as the amount of air going into it increases. B says the pressure drops exponentially as air goes in, and C says that the pressure stays the same as air goes in. Pressure in a tire increases proportionally to the amount of air in it.

Answer: wqcjn qefveqeqfbj qeib

Explanation:oiaer vgneiofrvn eiforbnewtjbioe

Answer:

8mph

Explanation:

speed=mph.

half an hourx2.

4 milesx2.

8 miles per hour.

That is the speed.

Hope this helps :D

Answer:

Its D

Explanation:

They are at a 90° angle to each other.

Do good on your tests :]

The answer is D) They are at a 90° angle to each other.

One of the waves which are propagated with the aid of simultaneous periodic versions of electrical and magnetic subject depth and consists of radio waves, infrared, seen mild, ultraviolet, X-rays, and gamma rays.

Radio waves, microwaves, seen light, and x-rays are all examples of electromagnetic waves that range very differently in wavelength. (a) Longer wavelength; (b) shorter wavelength. Electromagnetic waves are produced by means of the motion of electrically charged debris.

Learn more about electromagnetic waves here: https://brainly.com/question/25847009

#SPJ2

Answer:

Explanation:

Given:

Four more crests pass in a time of 38.4 s and the distance between the crests is 32 m.

We have to determine five terms.

Lets start with one-one basis.

a.  

Period = Time taken by a wave to pass though.

⇒  \(P = \frac{Total\ time}{No.\ of\ waves}\)

⇒ \(P = \frac{38.4}{4}\)

⇒ \(P=9.6 s\)

b.  

Frequency = Reciprocal of time period in Hertz.

⇒ \(f=\frac{1}{T}\)

⇒\(f=\frac{1}{9.6}\)

⇒ \(f=0.104 Hertz\)

c)

Wavelength = Distance between two consecutive trough and crest.

⇒ \(\lambda = 32 m\)

d.

Speed (v) = Product of frequency and wavelength.

⇒ \(v=f\times \lambda\)

⇒ \(v=0.104\times 32\)

⇒\(v = 3.33 ms^-1\)

e)

Amplitude = The maximum displacement or half the distance from crest to trough.

⇒ Here it can't be determined.

⇒ Impossible.

Voltage depends on the amount of resistance, current according to the Ohm's law, and, by definition, is the measurement of electrical pressure.

According to the Ohm's Law,  the current through a conductor between two points is directly proportional to the voltage across the two points.

Mathematically,

V ∝ I

V = IR

where, R is the resistance of the conductor and I is the current flowing in the conductor. So, the voltage depends on the amount of resistance and current.

Also, Voltage is the pressure from an electrical circuit's power source that pushes charged electrons (current) through a conducting loop, enabling them to do work such as illuminating a light.

Hence All of the above option in the given question are true.

To know more about Ohm's Law, refer:

https://brainly.com/question/1247379?referrer=searchResults

Ball travels at 9 m/s remain together west after collision.

v′=m1v1+m2v2m1+m2 v' is the final velocity of the two objects once they move together after the collision, where m1 is the mass of object 1, v1 is the starting velocity of item 1, m2 is the mass of object 2, and v2 is the initial velocity of object 2. v′ = m 1 v 1 + m 2 v 2 m 1 + m 2 m 1 + m 2.

F • t = m • v is an equation. When two objects collide, they both experience an impulse, which both causes and is equal to the change in momentum.

momentum before collision = momentum after collision

\(m_{1}v_{1} , m_{2}v_{2 =m_{1}+m_{2}*v\)

answer is 9m/s.

To know more about momentum after collision visit:-

https://brainly.com/question/24131009

#SPJ1

We can use the kinetic equation that combines velocity, acceleration, and time to calculate the number of months until the bank account is empty:

\(v = v_0 + at\)

Since initially there is no net change in the account balance, the initial velocity \((v_0)\)in this case is 0. 22.5 * $102 per month expressed as Acceleration (a). The moment (t) at which the account balance reaches zero must be determined.

We can arrange the equation to solve for time as follows:

\(0 = 0 + (22.5 * 10^2) * t\)

When we simplify the equation, we get:

2250t = 0

After 0 months the account balance will be zero as the result of the calculation will be 0. This shows that the bank account is currently empty or will be empty soon.

Learn more about Kinetic equation, here:

https://brainly.com/question/29795062

#SPJ2

Answer:

If you see images of a gas stove burner, pinto beans, fruits & vegetables, and grain, then the answer is A or 1.

Explanation:

i) The initial deceleration of the car is -1.6 m/s² and  the time taken is 5 seconds

ii) The final deceleration is -1 m/s²

iii) The total dispalcement = 1016 m

The initial deceleration of the car is given by the formula below:

v² = u² + 2as

where;

Solving for a;

12² = 20² + 2 * a * 80

a = -1.6 m/s²

Time taken, t = v - u / a

t = 12 - 20 / (-1.6)

t = 5 seconds

Final deceleration:

a = v - u / t

a = 0 - 12 / 12

a = -1 m/s²

iii) Displacement at constant velocity = 12 * 1 * 60

Displacement at constant velocity = 720 m

Final displacement, s = ut + 0.5at²

s = 12 * 12 + 0.5 * 1 * 12²

s = 216 m

Total dispalcement = 80 + 720 + 216

Total dispalcement = 1016 m

Learn more about displacement and deceleration at: https://brainly.com/question/28786034

#SPJ1

Of the options listed, the only effect that can be caused by exposure to infrared light is overheating (option a).

Infrared light is a form of electromagnetic radiation that is invisible to the human eye but can be detected as heat. When exposed to high levels of infrared light, such as in close proximity to a powerful infrared source, it can lead to overheating of the body or objects. Skin cancer (option b) is not directly caused by infrared light. It is primarily associated with overexposure to ultraviolet (UV) radiation from the sun or artificial sources like tanning beds. UV radiation falls in the higher energy range of the electromagnetic spectrum, while infrared radiation has lower energy. Radiation sickness (option c) is caused by exposure to high-energy ionizing radiation, such as gamma rays or X-rays. Infrared light does not possess enough energy to cause ionization and is therefore not capable of inducing radiation sickness. Memory loss (option d) is not a known effect of exposure to infrared light. Memory loss can be attributed to various factors, such as neurological conditions, head injuries, or aging, but not specifically to infrared light exposure. In summary, while exposure to high levels of infrared light can lead to overheating, it does not cause skin cancer, radiation sickness, or memory loss.

for more questions on infrared

https://brainly.com/question/29493769

#SPJ11

Answer:

1.    Kicking a soccer ball

2.      Playing tug of war  

3.         Bouncing a Ball

Explanation:

The magnitude of the force on an electron is 1.499 x 10^-25 N and the direction of the force is in the positive y-direction.

Velocity of protons and electrons = 3.99 x 10^5 m/sMagnitude of the magnetic field (B) = 2.93 x 10^-8 TThe force on a charged particle is given by the formula:Force on a charged particle = q * v * B where q is the charge of the particle, v is the velocity of the particle and B is the magnetic field.

Let's first calculate the force on a proton.Force on a proton:The charge on a proton is +1.6 x 10^-19 C (positive since the velocity is in the positive x-direction). Thus,Force on a proton = q * v * B= 1.6 x 10^-19 C * 3.99 x 10^5 m/s * 2.93 x 10^-8 T= 1.499 x 10^-25 NThis force acts in the negative y-direction (since the charge is positive and the velocity is in the positive x-direction, the force is in the negative y-direction).

Therefore, the magnitude of the force on a proton is 1.499 x 10^-25 N and the direction of the force is in the negative y-direction.Now, let's calculate the force on an electron. Force on an electron:The charge on an electron is -1.6 x 10^-19 C (negative since the charge of an electron is negative).

Thus,Force on an electron = q * v * B= -1.6 x 10^-19 C * 3.99 x 10^5 m/s * 2.93 x 10^-8 T= -1.499 x 10^-25 N

This force acts in the positive y-direction (since the charge is negative and the velocity is in the positive x-direction, the force is in the positive y-direction).Therefore, the magnitude of the force on an electron is 1.499 x 10^-25 N and the direction of the force is in the positive y-direction.

for such more questions on magnitude

https://brainly.com/question/30337362

#SPJ8

The initial velocity of the cue ball is 0.92v.

Initial velocity is the velocity of an object at the beginning of its motion. It is the speed and direction of an object at the start of its motion and is used to determine the final velocity of the object. Initial velocity is also used to calculate acceleration and displacement.

cue ball can be calculated using the conservation of momentum formula, which states that the total momentum of a system before a collision is equal to the total momentum after the collision. Using the given data, the initial velocity of the cue ball can be calculated as follows:

Pbefore = Pafter

m1v1 + m2v2 = (m1+m2)v

m1v1 + 0.2v2 = (1.2 + 0.2)v

v1 = 1.2v - 0.2v2

v1 = 1.2v - 0.2(1.4)

v1 = 1.2v - 0.28

v1 = 0.92v

Therefore, the initial velocity of the cue ball is 0.92v.

To know more about Initial velocity click-

https://brainly.com/question/24493758

#SPJ1

Answer:

What Is Moral Subjectivism? Moral subjectivism is based on an individual person's perspective of what is right or wrong. An individual can decide for themselves that they approve or disapprove of a certain behavior, and that is what determines if the behavior is right or wrong.

Answer:

d

=

s

t

Explanation:

distance = speed * time

here, the distance is from the earthquake centre to the seismic station.

both the P and S waves travel from the earthquake centre before being detected by the seismic station, so the distance is the same for both.

the speeds are given as

8740

m

/

s

for the P wave and

4100

m

/

s

for the S wave.

we also know that the P wave arrives

47.4

seconds before the S wave.

we do not know the time that the P wave takes to travel, but we can denote it as

t

P

.

the time that the S wave takes to travel can be denoted as

t

P

+

47.4

, where time is in seconds.

for the S wave, speed * time is

4100

⋅

(

t

P

+

47.4

)

for the P wave, speed * time is

8740

⋅

t

P

.

since the distances that they travel are the same, the two expressions for speed * time are equal.

4100

⋅

(

t

P

+

47.4

)

=

8740

⋅

t

P

if you expand the brackets, you can find that

4100

t

P

+

194340

=

8740

t

P

then you can subtract

4100

t

P

:

4640

t

P

=

194340

and divide by

4640

to find

t

P

, which is the time that P takes to travel:

t

P

=

41.883

...

seconds

since distance = speed * time, the distance that the P wave travels is

t

P

⋅

the speed of P.

this is

41.883

s

⋅

8740

m

/

s

, which gives

366057.42

m

.

in kilometres, this is

366

k

m

to

3

significant figures.

Answer: Air resistance

Explanation: If you subtract the net force from the weight of a falling object, you would be solving for a force that is not being balanced from the other forces.

The net force (with no external forces) on the falling object would just be the force of gravity. So, any force that unbalances the force of gravity would be what you are solving for. This can be air resistance, friction (if the object is sliding against a wall), or applied forces (pushing the object while it falls).

Answer:

-6 m/s

7.2 J

Explanation:

Given that

Initial velocity, u of both bodies = 0

Initial momentum = 0

Final velocity, v of the 3M block = 2 m/s

Mass M of the block A = M

Mass M' of the block B = 3M

Using the law of conservation of momentum, we know that

M * V(a) + 3M * V(b) = 0

Remember that the velocity of the block 3M block is V(b) = 2 m/s, so then

M.V(a) = - 3M * 2

V(a) = -6M/M

V(a) = -6 m/s

b

If mass M = 0.3 kg, then

K.E = 1/2 * M * V(a)² + 1/2 * M' * V(b)²

If we substitute values, we have

K.E = 1/2 * 0.3 * (-6)² + 1/2 * (3 * 0.3) * 2²

K.E = 0.15 * 36 + 2 * 0.9

K.E = 5.4 + 1.8

K.E = 7.2 J