45. When you park on a level road next to a curb: A. Your wheels must be within 18 inches of the curb B. Your front wheels must be turned towards the side of the road C. You do not have to set your parking brake

Answer:

Explanation:

vf=0

vi = 17

a = -0.8

Δx = ?

vf^2 = vi^2 + 2 a Δx

Δx = (vf^2 - vi^2) / 2a

Δx = (0-17^2) / 2 (-0.8)

Δx = 180.625 m

The magnitude of the resultant vector is 13.9m.

The size of the resulting vector can be determined using the Pythagorean theorem. As you can see from these two examples, the result of adding three or more rectangular vectors is easy to determine using the Pythagorean theorem. The vectors should be added in a different order. Equation 2 Subtracts the vectors in opposite directions from each other to get the resulting vector.

Where vector B is in the opposite direction to vector A and R is the resulting vector. The resulting vector is defined as a single vector that produces the same effect as many vectors produced together. The size of a vector is the length of the vector. The absolute value of vector a is represented by |a|. For more information on vector sizes, see Vectors overview. The formulas for the sizes of 2D and 3D vectors in terms of coordinates are derived on this page.

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Answer:

289.8 grams.

Explanation:

When the ice cube melts, it absorbs heat from the water in the dog's dish and undergoes a phase change from solid to liquid at 0.00 °C. The heat absorbed by the ice cube can be calculated using the formula:

Q = m * L

where Q is the heat absorbed, m is the mass of the ice cube, and L is the heat of fusion of water (which is 334 J/g). The heat absorbed by the ice cube is then equal to the heat released by the water, which can be calculated using the formula:

Q = m * c * ΔT

where m is the mass of the water, c is the specific heat capacity of water (which is 4.184 J/g·°C), and ΔT is the change in temperature of the water.

Setting the two formulas equal to each other, we get:

m * L = m * c * ΔT

Solving for m, we get:

m = (c * ΔT * m_water) / L

where m_water is the mass of the water in the dog's dish.

Substituting the given values, we get:

m = (4.184 J/g·°C * (27.0 °C - 18.0 °C) * 2500.0 g) / (334 J/g)

m ≈ 289.8 g

Therefore, the mass of the ice cube was approximately 289.8 grams.

Using the equation for constructive interference, we find that the wavelength of the visible light that is most constructively reflected is approximately 227.38 nanometers.

Constructive interference occurs when the wavelength of light in the film, multiplied by the refractive index of the film, is equal to an integer multiple of the film's thickness.

The equation is given by:

2 * n * t * cos(theta) = m * lambda

Where:

n is the refractive index of the film (approximately 1.33 for soap)

t is the thickness of the film (85 nm)

theta is the angle of incidence (usually 0 degrees for normal incidence)

m is an integer representing the order of the interference (1, 2, 3, ...)

lambda is the wavelength of light in the film (unknown)

Simplifying the equation for the first-order constructive interference (m = 1) and substituting the given values:

2 * 1.33 * 85 * cos(0) = 1 * lambda

Solving for lambda:

lambda = (2 * 1.33 * 85) / 1 = 227.38 nm

Therefore, the wavelength of the visible light that is most constructively reflected is approximately 227.38 nanometers.

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Answer:

its carbon

Explanation:

I'm doing to questions right now

Answer:

Carbon

Explanation:

Got it right on edg

(if im wrong just report my answer)

the main ways I would suspect them proppeling forward would be by putting their foot down and pushing with it or my going downhill.

Option A. An electromagnetic wave at very long wavelength (low frequency) best describes a radio wave.

A radio wave is best described as an electromagnetic wave at a very long wavelength or low frequency. It is not a pressure wave. Radio waves are a type of electromagnetic radiation, which also includes other forms such as visible light, infrared, and X-rays. The term "wavelength" refers to the distance between two consecutive points in a wave, such as from one crest to the next. In the case of radio waves, the wavelength is quite long, ranging from several millimeters to hundreds of meters. This long wavelength allows radio waves to travel long distances and pass through obstacles such as buildings and trees. Radio waves are used for various purposes, including communication, broadcasting, and radar systems. For example, when you listen to the radio, the sound is encoded onto a carrier wave, which is a specific radio wave frequency. The receiver then extracts the sound from the carrier wave, allowing you to hear it. Similarly, radar systems use radio waves to detect and track objects like airplanes or weather patterns. To summarize, a radio wave is an electromagnetic wave at a very long wavelength or low frequency. It is not a pressure wave. Radio waves are used for communication, broadcasting, and radar systems due to their ability to travel long distances and pass through obstacles. They play a crucial role in everyday life, allowing us to enjoy wireless communication and entertainment.

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The presence of heavy elements in stars correlates with their positions because these elements show which star formed first, and a star's brightness and spectral type show where it is in the galaxy.

Heavy elements are present in population I stars. It is concentrated in the discs of spiral galaxies and typically contains the sun. It is also hot, youthful, and brilliant. The majority of them are found in spiral arms. In globular clusters and the outer galactic halo, where the concentration of heavy elements is relatively low, population II stars are born. The important information to compare the locations of the stars is therefore their abundances of heavy metals. Energy must be added in order for elements heavier than iron and nickel to develop.

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Therefore, the tension in the string is 2.3658 N.

The buoyant force on the ball is equal to the weight of the water displaced by the ball. Therefore, the buoyant force is given by:

buoyant force = density of water x volume of ball x acceleration due to gravity

buoyant force = 1000 kg/m³ x 60 cm³ x 9.81 m/s²

buoyant force = 0.5886 N

The weight of the ball is given by:

weight = mass x acceleration due to gravity

weight = density x volume x acceleration due to gravity

weight = 507 kg/m³ x 60 cm³ x 0.01 m/cm x 9.81 m/s²

weight = 2.9544 N

Since the ball is in equilibrium, the tension in the string is equal to the weight of the ball minus the buoyant force:

tension = weight - buoyant force

tension = 2.9544 N - 0.5886 N

tension = 2.3658 N

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1. The maximum speed the ball can have is approximately 8.56 m/s.

2. The spring constant is approximately 6559.60 N/m.

1. To find the maximum speed of the ball when the string breaks, we can equate the centripetal force with the maximum tension force that the string can withstand.

The centripetal force is given by:

F_c = m * v^2 / r,

where F_c is the centripetal force, m is the mass of the ball, v is the velocity, and r is the radius of the circle.

The maximum tension force is given as 44 N.

Setting F_c equal to the maximum tension force, we have:

44 N = (0.6 kg) * v^2 / (1 m).

Simplifying the equation, we find:

v^2 = (44 N * 1 m) / (0.6 kg) = 73.33 m^2/s^2.

Taking the square root of both sides, we get:

v = √(73.33 m^2/s^2) ≈ 8.56 m/s.

Therefore, the maximum speed the ball can have is approximately 8.56 m/s.

2. The spring constant, denoted by k, relates the force applied to the displacement of the spring. It is given by:

k = F / x,

where k is the spring constant, F is the force applied to the spring, and x is the displacement of the spring.

In this case, we are given the force F = 99.0 N and the displacement x = 0.0151 m. Plugging these values into the equation, we have:

k = 99.0 N / 0.0151 m ≈ 6559.60 N/m.

Therefore, the spring constant is approximately 6559.60 N/m.

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Answer:

I can't read it if you zoom in its still blurry

Explanation:

read the question to me and I'll try to answer it thx

The electromagnetic radiation with a wavelength of 1.5 x 10⁻⁶ m corresponds to infrared radiation.

option D.

Electromagnetic waves are a form of radiation that travel though the universe.

So electromagnetic radiation consists of waves of the electromagnetic field, which propagate through space and carry momentum and electromagnetic radiant energy.

Examples of electromagnetic radiations include;

The electromagnetic radiation with a wavelength of 1.5 x 10⁻⁶ m corresponds to infrared radiation.

Thus, option D is the correct answer.

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Given that the radius of the circular path is r = 142 m and the coefficient of the friction is

The condition for the car to travel safely is

Frictional force = centrifugal force

Here, m is the mass of the car and the acceleration due to gravity is g = 9.8 m/s^2.

v is the maximum speed of the car.

Answer:

the ceiling

Explanation:

i dont know man but thats what my swimming instructor said, but i havent swam in like 3 years so ..

It takes 2 seconds for the charge to pass a point in the wire. The result is obtained by using the formula for an electric current equation.

Electric current is a flow of charged particles per unit of time. It can be expressed as

I = Q/t

Where

A light bulb has

Find the time taken!

We use the formula above to find t.

I = Q/t

0.835 = 1.67/t

t = 1.67/0.835

t = 2 s

Hence, the time needed to for the charge to pass a point in the wire is 2 seconds.

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Option C is correct. It has a high frequency. Wavelength is inversly proportional to the frequency. For short-wavelength, the frequency will be high.

Frequency and wavelength have an inverse connection with one another. As a result, the wave with a high frequency should have a short wavelength.

For short-wavelength, the frequency will be high.

Hence Option C is correct. It has a high frequency.

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Answer:

c <33

Explanation:

Answer:

60cm

Explanation:

30+30=60

Every air conditioner has a preset temperature. If used continously, the temperature goes down the reset temperature and breaks down.

And then it would pump the heat out and a lot of energy would be released  

When the air conditioner is mounted inside a room, it only transfers heat within the room. The air conditioner does not change the form of the heat; it only absorbs the heat from inside the room and ejects it outside the room.

According to the second law of thermodynamics, in a closed system, the heat is increasing or remains constant. It never decreases.

So as the air conditioner cools the room, it has to pump the heat out from inside the room.

Every air conditioner has a preset temperature. If used continously, the temperature goes down the reset temperature and breaks down.

And then it would pump the heat out and a lot of energy would be released  

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Answer:

what are the A B C D E

Explanation:

Answer:

p = 120000 kg · m/s

Explanation:

p = mv

p=momentum

m=mass

v=velocity

p = (4800)(25)

p= 120000 kg · m/s

Answer:

\(momentum = mass \times velocity \\ = 4800 \times 25 \\ = 120000 \: kgm {s}^{ - 1} \)

Answer:

Option C is correct. The ball keeps moving forward and falls downward at the same time.

Explanation:

When the ball reaches the edge of the cliff, its forward motion will indeed continue due to its inertia. Inertia is the property of an object to maintain its state of motion. However, gravity will also be acting on the ball, causing it to accelerate downward.

As a result, the ball will move forward and descend downward at the same time. The trajectory of the ball will be a curved path that combines the horizontal motion (forward movement) and the vertical motion (downward fall) simultaneously. This curved path is known as a parabolic trajectory.

The exact shape of the trajectory will depend on factors such as the initial velocity, angle of the cliff, and air resistance. If there is no air resistance and the cliff is not too steep, the ball's trajectory may resemble a smooth parabolic curve. However, if there is air resistance or the cliff is steep, the trajectory might deviate from a perfect parabola.

Eventually, due to the downward acceleration caused by gravity, the ball's vertical motion will dominate, and it will fall straight down. But immediately after reaching the edge of the cliff, the ball will experience a combination of forward motion and downward descent.

Answer:

Sea fish

Explanation:

Sea fish doesn't breath through their gills but dissolved oxygen in water through gills

The causes the electric field to become weaker, as the presence of the dielectric material reduces the overall capacitance of the capacitor.

The dielectric material like paper is inserted between the plates of a capacitor holding a charge, the electric field becomes weaker. This happens because the dielectric material reduces the effective electric field between the capacitor plates by aligning its internal dipoles with the field. As a result, the capacitance of the capacitor increases, allowing it to store more charge at the same voltage.Adding a dielectric allows the capacitor to store more charge for a given potential difference. When a dielectric is inserted into a charged capacitor, the dielectric is polarized by the field. The electric field from the dielectric will partially cancel the electric field from the charge on the capacitor plates.

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To calculate the Taguchi quality cost, we need to multiply the length of each piece by the Taguchi parameter T, and then sum up the costs.

Given:

Length of the first metal rod = 49.19 cm

Length of the second metal rod = 49.93 cm

a) Taguchi parameter T:

Since we don't have the specific value of T, we cannot calculate it.

b) Taguchi Quality Cost of the second metal rod:

Taguchi Quality Cost = Length of the second metal rod * Taguchi parameter T

c) Taguchi Quality Cost of the first metal rod:

Taguchi Quality Cost = Length of the first metal rod * Taguchi parameter T

d) Total Taguchi Quality Cost of the two units:

Total Taguchi Quality Cost = Taguchi Quality Cost of the first metal rod + Taguchi Quality Cost of the second metal rod

Since we don't have the Taguchi parameter T, we cannot calculate the specific values for parts (b), (c), and (d).

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Answer: In order for the ladder (with the firefighter on it) to not slip against the ground, the friction between the ladder and the ground must provide enough horizontal force to prevent the ladder from sliding horizontally. The minimum value of the coefficient of static friction between the ladder and the ground can be calculated using the following steps:

Step 1: Identify the forces acting on the ladder.

The forces acting on the ladder are the weight of the ladder (WL) acting downward at the center of the ladder, the weight of the firefighter (Wf) acting downward at a distance of 6.40 m up from the bottom of the ladder, the normal force (N) exerted by the ground acting perpendicular to the ground, and the frictional force (f) acting horizontally in the direction opposite to the potential sliding motion of the ladder.

Step 2: Write down the equations for force equilibrium.

In the vertical direction, the sum of the vertical forces must be zero:

N + Wf - WL = 0

In the horizontal direction, the sum of the horizontal forces must be zero:

f = 0 (since there is no horizontal acceleration)

Step 3: Express the forces in terms of known quantities.

WL = 350 N (given)

Wf = 885 N (given)

The angle of inclination of the ladder with respect to the ground is given as 54.0°.

Step 4: Calculate the normal force N.

Using the vertical force equilibrium equation, we can solve for N:

N = WL - Wf = 350 N - 885 N = -535 N (negative sign indicates that N acts in the opposite direction of WL and Wf)

Step 5: Calculate the frictional force f.

Since the ladder is on the verge of slipping, the frictional force f will be at its maximum value, which is given by:

f = μN, where μ is the coefficient of static friction.

Step 6: Calculate the coefficient of static friction μ.

Using the calculated value of N, we can now calculate μ:

μ = f / N = (-535 N) / N = -535

Step 7: Determine the minimum value of μ.

The coefficient of static friction cannot be negative, as it is always non-negative in reality. Therefore, the minimum value of the coefficient of static friction between the ladder and the ground is 0, which means that the ladder must have sufficient friction with the ground to prevent slipping.

In conclusion, the minimum value for the coefficient of static friction between the ladder and the ground, so that the ladder (with the firefighter on it) does not slip, is 0.

Answer:Mars is about half the size of Earth by diameter and has a much thinner atmosphere, with an atmospheric volume less than 1% of Earth's. The atmospheric composition is also significantly different: primarily carbon dioxide-based, while Earth's is rich in nitrogen and oxygen.

Explanation:

Answer:The atmosphere of Mars is much thinner than Earth's. The average surface pressure is only about 610 pascals (0.088 psi) which is less than 1% of the Earth's value. The currently thin Martian atmosphere prohibits the existence of liquid water at the surface of Mars, but many studies suggest that the Martian atmosphere was much thicker in the past.

Explanation:

As the air cools, it becomes denser and sinks below warmer air (option b). Cooling causes a decrease in air molecules' kinetic energy, reducing their speed and increasing their proximity to each other.

This increased density leads to higher air pressure. According to the ideal gas law, decreasing temperature decreases the air pressure.

This denser, cooler air displaces the warmer, less dense air, causing it to rise. This process is known as convection.

It creates vertical air movements, with cooler air sinking and warmer air rising.

The resulting circulation patterns play a crucial role in weather and climate systems, influencing wind patterns, cloud formation, and precipitation. Thus, the correct option is b.

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The approximate change in internal energy of the water, when heated from 0°C to 100°C at a constant pressure of 1 atm, is 9400 cal. This value is obtained using the formula ΔU = m * c * ΔT, where ΔU represents the change in internal energy, m is the mass of the water (94 g), c is the specific heat of water (1 cal/g·°C), and ΔT is the change in temperature (100°C - 0°C = 100°C). By substituting the given values into the formula, we find that the change in internal energy of the water is 9400 cal.

To calculate the change in internal energy of the water, we can use the formula:

ΔU = m * c * ΔT

where:

ΔU is the change in internal energy,

m is the mass of the water (94 g),

c is the specific heat of water (1 cal/g·°C), and

ΔT is the change in temperature (100°C - 0°C = 100°C).

Substituting the values into the formula, we get:

ΔU = 94 g * 1 cal/g·°C * 100°C

   = 9400 cal

Therefore, the approximate change in internal energy of the water is 9400 cal.

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