Relative to the ground, a car has a velocity of 17.3 m/s, directed due north. Relative to this car, a truck has a velocity of 23.0 m/s, directed 52.0° north of east. What is the magnitude of the truc

Answer:When two objects are moving towards each other, the apparent frequency of sound waves they emit towards each other increases, while the wavelength decreases. This is due to the Doppler effect.

The formula for the Doppler effect is:

f' = f(v +/- vr)/(v +/- vs)

where:

f' = the observed frequency

f = the emitted frequency

v = the speed of sound

vr = the relative velocity between the two objects

vs = the velocity of the source (i.e., the hawk emitting the sound)

In this case, the relative velocity between the two hawks is:

vr = (15 m/s + 20 m/s) = 35 m/s

For the first hawk emitting a frequency of 3200 Hz, the observed frequency received by the other hawk is:

f' = 3200 Hz * (330 m/s + 35 m/s)/(330 m/s - 20 m/s) = 4073 Hz

For the second hawk emitting a frequency of 3800 Hz, the observed frequency received by the first hawk is:

f' = 3800 Hz * (330 m/s + 35 m/s)/(330 m/s + 15 m/s) = 4139 Hz

Therefore, the first hawk receives a frequency of 4073 Hz, while the second hawk receives a frequency of 4139 Hz.

Explanation:

Answer:

should be D

Explanation:

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The force fff up the ramp can be resolved into two components: one parallel to the ramp and one perpendicular to the ramp.

The component parallel to the ramp is responsible for the box's acceleration. The magnitude of this component can be calculated using the equation F_parallel = fff * sin(thetaθθ), where F_parallel is the magnitude of the component parallel to the ramp.

When the box is held at rest, the net force acting on it is zero. The force fff up the ramp can be resolved into two components: one parallel to the ramp and one perpendicular to the ramp. The component perpendicular to the ramp does not contribute to the box's acceleration since the ramp is frictionless. Therefore, the component parallel to the ramp is responsible for the box's acceleration. By using the equation F_parallel = fff * sin(thetaθθ), we can calculate the magnitude of this component.

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Answer: Density--> the amount of mass in a  given volume

Boiling point: the tempeture when a liquid becomes gas

Conductivity: the ability of a subtance to transfer heat or electricety

Bouyant force: The upward force of an object in a liquid

soulibility: the ability of a subtance to disolve in  other.

sorry for bad spelling

Explanation:

Answer:

Hey there

Boiling point-the temperature at which liquid becomes gas.*

*for water that is 100 c*

Density-the amount of gas in a given volume.**

** the density of water is 997kg/m³

Soliditiy-the ability of a substance to dissolve in another.***

***You would dissolve if you were inside the sun.

Conductivity-the ability of a substance to transfer heat or electricity.****

****metal transfers both heat and electricity efficiently.

Buoyant force-the upward force on an object in a fluid.*****

*****You float in water because you are lighter than water.

Hope it helped

True. Warm air expands faster, leading to a more rapid decrease in air pressure with height than in cold air.

True. In a warm air column, the air molecules have higher kinetic energy and move more vigorously. This increased motion leads to greater expansion of the air column and a more rapid decrease in air pressure with height. As the warm air rises, it expands and becomes less dense, causing the pressure to decrease at a faster rate. In contrast, in a cold air column, the air molecules have lower kinetic energy and move more slowly.

The reduced motion results in less expansion of the air column and a slower decrease in air pressure with height. Therefore, air pressure decreases more rapidly with height in a warm air column compared to a cold air column.

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Answer:

1) duration of the sessions

2) daily pattern days and ..

Analyze system dynamics and design compensator to achieve desired response by selecting compensator zero and canceling one pole of GHP(z).

To select a compensator zero to cancel one pole of GHP(z), we need to use the given angle condition:

Zzero - (pole(1) + Zpole(B)) = 180°

Here, Zzero represents the compensator zero, pole(1) represents the first pole of GHP(z), and Zpole(B) represents the compensator pole.

Let's proceed with the solution step by step:

1. First, we need to determine the value of Zzero. The angle condition states that Zzero = Zpole(1), which means the compensator zero is equal to the first pole of GHP(z).

2. Now, we need to find the value of Zpole(B). We can rewrite the angle condition as follows:

Zpole(B) = Zzero - pole(1) + 180°

Since we already know that Zzero = Zpole(1), we can substitute Zzero in the above equation:

Zpole(B) = Zpole(1) - pole(1) + 180°

Simplifying further:

Zpole(B) = 180°

Therefore, the value of Zpole(B) is 180°.

To summarize, we can select the compensator zero (Zzero) to cancel one pole of GHP(z) as Zpole(1), and the compensator pole (Zpole(B)) is determined to be 180° based on the given angle condition.

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Answer:

d

Explanation:

The car in a time of 4 seconds will travel a distance of: 32 m

The formulas for uniformly varied rectilinear motion (UVRM) and procedures we will use to solve this exercise are:

Where:

Information about the problem:

Applying the acceleration formula we have:

a = (vf - vi) /t

a = (0 m/s - 16 m/s) /4 s

a = (-16 m/s) /4 s

a = -4 m/s²

Acceleration is negative because the car is decelerating

Applying the distance formula, we get:

x = (vf²-vi²)/ (2a)

x = [(0 m/s)²- (16 m/s)²]/ (2 * -4 m/s²)

x = (0 m²/s²- 256 m²/s²)/ -8 m/s²

x =  -256 m²/s²/ -8 m/s²

x = 32 m

It is a physical quantity that indicates the variation of velocity as a function of time, it is expressed in units of distance per time squared e.g.: m/sec2 ; km/h2

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Answer:

in a direction parallel to the direction that the wave moves

Explanation:

Answer:

parallel to the direction....

Answer:

true

Explanation:

if all forces are equal then there would be no stronger force to give any net force so it would be zero

When a body is thrown downwards, it falls freely under gravity.

The question is incomplete as the values are missing but I will try to help you the much I can. We must note that the acceleration of a body refers to the rate at which its velocity changes per unit time.

When an object is thrown down from a height. It gains speed due to acceleration due to gravity which acts on the body as it falls freely.

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Answer:

a wave with a large amplitude carries more energy than a wave with a small amplitude

Explanation:

The type of energy used by the muscles of larvae and pupae to dive down through water is chemical potential energy from their cells. When the muscles contract, the chemical energy stored in the cells is converted into mechanical work, which allows the larvae and pupae to move through the water. Since Larvae and pupae have muscles that allow them to move through the water. When these muscles contract, they convert the stored chemical energy in their cells into mechanical work, which allows the larvae and pupae to move through the water. This is an example of how chemical potential energy can be converted into kinetic energy, which is the energy of motion. Therefore, the type of energy used by the muscles of larvae and pupae to dive down through water is chemical potential energy from their cells.

Answer:

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

\(volume = \frac{mass}{density} \\\)

From the question

mass = 24 g

density = 1.2 g/mL

We have

\(volume = \frac{24}{1.2} \\ \)

We have the final answer as

Hope this helps you

Answer:

speed cannot be used to calculate the temperature

Answer:

REFLECTED, ECHOES.

Explanation:

Answer:

Explanation:

Based on the given hint, it appears that the question is related to the analysis of a physics experiment involving the relationship between velocity, distance, and acceleration due to gravity.

Given that the formula v² = 2ugd is being used, it suggests that the experiment involves dropping an object from a height d and measuring the distance it travels over time, as well as the final velocity it reaches. By plotting the squared velocity (v²) on the vertical axis and distance (d) on the horizontal axis, a straight line can be obtained with a slope of 2ug, where u is the coefficient of friction and g is the acceleration due to gravity.

However, without further information or data from the experiment, it is impossible to determine the specific value of the scale factor used.

Answer:

search up the kinetic energy and potential energy etc. then take them and look at the characteristica are they the same? What makes them similar? Why are they different ? How? Then add the chemical nuclear and electrical changes it creates. Now the rest! There you’ve got this! If you need support I’m here! Hope this helped!

Explanation:

Answer:

c 0.10

Explanation:

V=IR

12.0V=I x 120.12ohms

I=0.099

I= 0.10

Answer:

D. Adapt your communication style.

Explanation:

It is quite difficult to gauge the protocol here given the lack of information about the work environment; but as a general answer, communication skills are always handy. Furthermore, it seems that Marta in particular struggles with this. Assuming Marta is providing a specialized service of a sort, she would need to understand that there is a reason why her services are required at all. Through this, hopefull she'll understand that they are most likely outside of this field of work, and ergo [she] must cater and gear her actions towards the interest of the person(s) in question.

It is to be noted that this is merely my surmise.

Answer:C car

Explanation:

Answer:

Explanation:

Remark

The only thing that might trip you up is what to do with the angle. The vertical component of the 15 degrees does no work against anything. So the 15 degrees limits the horizontal force.

The formula is

Work = F * d * cos(15)

The givens are

F = 2000 N

d = 30 m

Cos(15) = 0.9659

Solution

Work = 2000 * 30 * cos(15)

Work = 57,955

Rounded to two places would be 5.8 * 10^4

C

a. Velocity, V = 78.4 m/s

b. Displacement, S = 313.6 meters

Given the following data:

Acceleration due to gravity, a = 9.8 meter per seconds square.

a. To find the the stone’s velocity after 8.0 s, we would use the first equation of motion;

Mathematically, the first equation of motion is given by the formula;

\(V = U + at\\\\V = 0 + 9.8\) × \(8\)

Velocity, V = 78.4 m/s

b. To find the the stone’s displacement during this time, we would use the second equation of motion;

\(S = ut + \frac{1}{2}at^2\\\\S = 0(8) + \frac{1}{2}(9.8)(8)^2\\\\S = 0 + \frac{1}{2}(9.8)(64)\)

\(S = 4.9\) × \(64\)

Displacement, S = 313.6 meters

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When the electron density is unevenly distributed around atoms in a covalent bond, it is considered to be polar.

Polar covalent bonds are a type of chemical bond formed between atoms that share electrons unequally. In a covalent bond, two atoms share electrons in order to achieve a stable electron configuration.

Polar covalent bonds occur when the electronegativity difference between the two atoms in the bond is significant enough to cause the electrons to be shared unequally. The atom with the higher electronegativity attracts the shared electrons closer to itself, resulting in a partial negative charge, while the other atom has a partial positive charge. This unequal distribution of charges in the bond creates a dipole moment, giving rise to a polar bond.

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Answer: 60 m/s

Explanation: If the bus is traveling at 50 m/s, and it accelerates uniformly at 5m/s for 2 seconds, that means it gained 5 m/s for every second it accelerated. We know both the rate the bus accelerated at and how long it accelerated for. All you have to do to solve this problem is figure out how much speed the bus gained and then add that to the original speed. 5*2=10, so the bus gained 10 m/s during 2 seconds of acceleration. 50+10=60, so the bus is now traveling at 60 m/s.