A plane heads due north at an airspeed of 180 km/h. The wind
is blowing from the west at 60km/h. What is the plane's
velocity with respect to the ground?

The image created by new lens has a height of 0.0154 cm if the item is 5.00 cm tall.

Distance is how length is calculated. For instance, a highway's length is comparable to its length. The millimeter, centimeter, metre, and kilometer are the four most widely used measurements units for distances in the metric system.

Object distance, p = 29.5 cm

The object's height is h = 5.00 cm

We have,

1/f = 1/p + 1/i where i= is the image distance

1/(-17.0 cm) = 1/(29.5 cm) + 1/i

1/i = 1/(-17.0 cm) - 1/(29.5  cm)

1/i = -0.09215686274

i = -0.09215686

Now the magnification is given by,

m = - i/p

m = -(-0.09215686)/(29.5 )

m = 0.00307189533

The picture is oriented similarly to the object because the magnification is positive.

h' = m*h

h' = 0.00307189533 *5.00

h' = 0.01535947665 cm

=h' 0.0154cm

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11.The time at 75° East longitude would be 1 hour and 20 minutes behind. 12.The time at 135° degrees East longitude would be 4 hours ahead. and 13. the time in Lima, Peru (15° South latitude, 75° West longitude) would also be 9:30 AM.

At 2:00 AM at 90° East longitude, the time at 75° East longitude would be 1 hour and 20 minutes behind. This is because for every 15 degrees of longitude, there is a time difference of approximately 1 hour. Since the two longitudes in question have a difference of 15 degrees, we can divide this by 15 to calculate the time difference.

If it is 8:00 PM at 15° East longitude, the time at 135° East longitude would be 4 hours ahead. Similarly, for every 15 degrees of longitude, there is an approximate time difference of 1 hour. Since the two longitudes in question have a difference of 120 degrees, we can divide this by 15 to calculate the time difference.

There is a 7-hour difference** between 105° West longitude and the Prime Meridian (0° longitude). The Prime Meridian, passing through Greenwich, England, serves as the reference point for determining time zones. As one moves westward from the Prime Meridian, each 15 degrees of longitude corresponds to a time difference of approximately 1 hour. Therefore, the time at 105° West longitude would be 7 hours behind the time at the Prime Meridian.

If it is 9:30 AM in New York (41° North latitude, 75° West longitude), the time in Lima, Peru (15° South latitude, 75° West longitude) would also be 9:30 AM. The latitude does not affect the time difference between the two locations. However, since both locations have the same longitude (75° West), they would experience the same local time. The time difference between different latitudes is primarily significant for determining time zones rather than the actual time within a specific time zone.

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The diver's average angular speed during the dive is 555.01 rads/sec

We are given;

              Time taken; t = 2.4 secs

               Number of somersaults = 212

Now, we know that,

               1 revolution = 2π radians

And number of somersaults is the same thing as number of revolutions

So,

               Total radians = 2π × 212 = 424π

average angular speed = total number of revolutions/time period

                                       = 424π/2.4

                                       = 555.01 rads/sec

Hence the diver's average angular speed during the dive is 555.01 rads/sec.

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Answer: A gram of gold is worth about $25, so 2 grams or better would be viewed as high-grade for bulk tonnage mining.

Explanation:

i looked it up.

Answer:

archimides princile

Explanation:

Archimede's principle states that when a body is immersed partly or wholly in a liquid, there is an apparent loss in the weight of the body which is equal to the weight of the liquid displaced by the body.

Answer:

archimides

Explanation:

When a circuit is finished and current can flow, it is said to be in a closed-circuit condition. In the closed position, the current has a clear passage.

The light bulb turns on when the switch is closed because current passes through the circuit. The bulb receives its full 120 volts and the intended current flow, which allows it to operate at maximum brightness.

There is a closed (or full) circuit with the bulb when the circuit's wires are attached to the metal casing and metal tip of the lightbulb. The filament will be able to conduct electricity, which will result in the bulb lighting up.

Therefore, in this case, both bulbs receive the same amount of electricity both before and after the switch is closed. Consequently, the brightness doesn't change.

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9514 1404 393

Answer:

  27.85 m/s

Explanation:

If we take the direction of motion of the aircraft carrier as positive, The speed of the deck is 31.0 m/s. Bond is running in the opposite direction, so his speed relative to the deck is -3.15 m/s.

Bond's speed relative to the stationary reference (the sub or the water), is ...

  31.0 m/s - 3.15 m/s = 27.85 m/s

Answer:

B. herbivore.

Explanation:

Meadow voles primarily consume plants, such as grasses, herbs, and bark, although they may also eat insects occasionally. As a result, their niche in an ecosystem is that of a herbivore, which is an organism that consumes primarily plants.

The smallest particle size a scientist can observe using a scanning probe microscope would be a nanometer, therefore the correct answer is option B.

A recognized and accepted standard for measuring other amounts of the same sort is referred to as a unit of measurement. It is predetermined by custom or law.

As given in the problem, we have to find out what is the smallest particle size a scientist can observe using a scanning probe microscope.

1 millimeters = 1 × 10 ⁻³ meter

1 nanometer = 1 × 10⁻⁹  meters

Thus, the smallest particle size a scientist can observe using a scanning probe microscope would be a nanometer, therefore the correct answer is option B.

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Answer:

When displacement vectors are added, the result is a resultant displacement. But any two vectors can be added as long as they are the same vector quantity. If two or more velocity vectors are added, then the result is a resultant velocity. If two or more force vectors are added, then the result is a resultant force.

Answer:

Inertia

Explanation:

Part of Newton's Laws of Motion

Answer:

--->The goals of the investigators is to prevent tampering with evidence and reduce exposing workers to additional harm.

--> The investigators are able to find out how fast a car that was involved in an accident was going by measuring the length of skid marks.

Explanation:

Automobile or car accidents are incidents which when it occurs are generally fast, violent and confusing to both the people involved and the eyewitnesses. With the development in technology, investigators (usually known as forensic investigators) use a variety of tools and physical evidence to put together a clear picture of what happened during a car accident. With their discoveries, they would be able to to prevent tampering with evidence and reduce exposing workers to additional harm.

They can know how fast a car that was involved in an accident was going by:

--> Analysing a physical evidence such as measurement of the length of skid marks. When the skid distance (which is the drag factor due to road surface friction) and the braking efficiency are determined, the minimum speed of a car as it started skidding can be estimated. Even the appearance of the skid mark also tells investigators whether a car was braking, accelerating, or sliding.

The laser has emitted 3.81 x 10^23 photons in 18.73 minutes.

Firstly, we need to find the number of photons emitted per second by the laser which is given by E = P/ hν where E = number of photons emitted, P = power in watts, h = Planck's constant and ν = frequency of the laser.

The wavelength is given by the relation λν = c (speed of light)

Therefore, ν = c/λSo, ν = 3 x 10^8/ 488 x 10^-9 = 6.15 x 10^14Hz

Power in watts = 123.0mW = 123.0 x 10^-3 W

Plank's constant h = 6.626 x 10^-34 Js

Putting these values in the above equation, E = (123 x 10^-3) / (6.626 x 10^-34 x 6.15 x 10^14) = 3.39 x 10^20 photons per second

So, in 18.73 minutes (1123.8 seconds), the total number of photons emitted by the laser can be calculated as follows:

Total number of photons = (3.39 x 10^20) x 1123.8= 3.81 x 10^23 photons

Therefore, the laser has emitted 3.81 x 10^23 photons in 18.73 minutes.

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Answer:

False

Explanation:

I took the test  and true was incorrect so the answer is false

hope this helps

Answer:

False

Explanation:

False. A high gear ratio = less speed = more force

Answer:

\(a=0.276\)

Explanation:

From the question we are told that:

Mass \(m=98.kg\)

Radius \(r=0.335\)

Angular velocity \(\omega=100rpm\)

Radial force of \(F_r=23.6 N.\)

Kinetic coefficient of friction  \(\mu=0.192\)

Generally the equation for Kinetic Force is mathematically given by

 \(F_k=\mu.F_r\)

 \(F_k=0.192*23.6\)

 \(F_k=4.5312\)

Generally the equation for Torque on Center is mathematically given by

 \(Ia=f_k*r\)

Where

 \(I=\frac{Mr^2}{2}\)

Therefore

 \(a=\frac{2f_k}{Mr}\)

 \(a=\frac{2*4.5312}{98*0.335}\)

 \(a=0.276\)

Therefore Angular acceleration of the grindstone is

\(a=0.276\)

A drag car starts down a drag strip. If it can accelerate constantly at 17 m/s squared, then its speed after 5 seconds would be 85 meters/second.

There are three equations of motion given by  Newton,

v = u + at

S = ut + 1/2×a×t²

v² - u² = 2×a×s

v = u + at

  = 0 + 17×5

  = 85 m/s

S = ut + 1/2at²

200 = 0 + 0.5×5×t²

2.5t² = 200

t² = 200 / 2.5

t = 8.944 seconds

Thus, the speed of the car after 5 seconds would be 85 m/s and it would take 8.944 seconds to clear a 200-meter drag strip.

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Answer:

Force or velocity

Explanation:

Answer:

c

Explanation:

diluted means weakened

Another term for weak solutions is dilute solution. Thus, the correct option for this question is C.

A weak solution may be defined as a type of solution that significantly partially dissociates into its ions in an aqueous solution or water. In contrast, a strong solution fully dissociates into its ions in water.

The concentration of the weak solution is found to be lower as compared to the strong solution. The word dilute also symbolizes the presence of less concentration in any solution.  

The main difference between weak and strong solutions is true that for strong solutions we are given a Brownian motion on a given probability space whereas for weak solutions we are free to choose the Brownian motion and the probability space.

Therefore, another term for weak solutions is dilute solution. Thus, the correct option for this question is C.

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To find the pressure when the gas is pumped into a 5.00 L vessel, we can use Boyle's Law, which states that the pressure and volume of a gas are inversely proportional at constant temperature.

According to Boyle's Law, the product of the initial pressure (P1) and initial volume (V1) is equal to the product of the final pressure (P2) and final volume (V2). Mathematically, it can be represented as P1 * V1 = P2 * V2.

Given:

Initial pressure (P1) = 1200 mmHg

Initial volume (V1) = 10.0 L

Final volume (V2) = 5.00 L

Using the formula, we can solve for the final pressure (P2):

P2 = (P1 * V1) / V2

P2 = (1200 mmHg * 10.0 L) / 5.00 L

P2 = 2400 mmHg

Therefore, the pressure when the gas is pumped into the 5.00 L vessel is approximately 2400 mmHg.

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Answer:

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True.

When a hydrophobic molecule is placed in water, it disrupts the hydrogen bonding between water molecules. As a result, water molecules near the hydrophobic molecule will orient themselves in a way that minimizes contact with it. This means that the hydrophobic molecule will be surrounded by water molecules that are arranged in a more ordered and structured way than the surrounding water. This effect is known as the hydrophobic effect and is responsible for many important biological processes, such as the folding of proteins. Overall, the hydrophobic effect plays a crucial role in determining the behavior of molecules in aqueous environments.

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Answer:

C

Explanation:

Answer:

The magnetic force disappears

Answer:

Mitochondria and plastids are the two organelles that contain their own genetic material. Both these organelles have their own DNA and ribosomes.

The amplitudes of the electric and magnetic fields are 274.7 V/m and \(3.58 * 10^{-5} T\), respectively.

As per the question given,  

The average intensity of an electromagnetic wave is given by:

\(S_{average} = (1/2) * c * ε0 * E_{rms}^2\)

where c is the speed of light, ε0 is the electric constant, and E_rms is the root-mean-square value of the electric field. Similarly, we have:

\(S_{average} = (1/2) * c * μ0 * B_{rms}^2\)

where μ0 is the magnetic constant, and B_rms is the root-mean-square value of the magnetic field.

a) Solving for E_rms and B_rms, we get:

\(E_{rms} = sqrt(2 * S_{average} / (c * ε0)) = sqrt(2 * 800 W/m^2 / (3 * 10^8 m/s * 8.85 * 10^{-12} F/m)) = 193.7 V/m\)

\(B_{rms} = sqrt(2 * S_average / (c * μ0)) = sqrt(2 * 800 W/m^2 / (3 * 10^8 m/s * 1.26 * 10^{-6} N/A^2)) = 2.53 x 10^{-5} T\)

b) The amplitudes of the electric and magnetic fields are related to their root-mean-square values by:

\(E_0 = sqrt(2) * E_{rms} = 274.7 V/m\\B_0 = sqrt(2) * B_{rms} = 3.58 x 10^{-5} T\)

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A direct recharge aquifer is characterized by water infiltrating the ground directly above the aquifer, replenishing the groundwater through precipitation or other water sources.

In a direct recharge aquifer, water enters the aquifer by percolating through the soil or rock formations directly above it. This can occur when precipitation, such as rainfall or snowmelt, seeps into the ground and makes its way downward into the aquifer.

Other water sources, such as rivers or lakes, can also contribute to the direct recharge of the aquifer by infiltrating the surrounding soil. This type of aquifer benefits from a direct and efficient replenishment process, allowing it to maintain a sustainable supply of groundwater.

The ability to receive water directly from the surface helps to offset natural or human-induced depletion of groundwater resources.

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Answer:

Spun yarns are produced by placing a series of individual fibres or filaments together to form a continuous assembly of overlapping fibres, usually bound together by twist. This operation is required in wool spinning because different parts of the fleece contain fibres of different length and thickness.

Given:

The initial velocity is

The initial position is x1 = 2.76 cm

The final position is x2 = - 5 cm

The time will be t = 2.25 s

To find the acceleration.

Explanation:

The acceleration can be calculated by the formula

Here, the displacement is

On substituting the values, the acceleration will be

Final Answer: The acceleration is -12.84 cm/s^2

I know that the answer to your question is b because why not. just trust me

Answer:

hope it is helpful to you