What will happen if
any bulb goes out?
A
A. Only A will remain lit.
B. A and C will remain lit.
C. Only C will remain lit.
D. All bulbs will go out.

Answer: 41.9 below the negative x-axis.

Explanation: To find the direction of the resultant vector, we need to use some trigonometry and vector addition. Here are the steps:

Draw a diagram of the particle’s motion and label the vectors. The particle starts at the origin and moves 7.22 cm in the negative y-direction, which we can call vector A. Then it moves 8.05 cm in the positive x-direction, which we can call vector B. The resultant vector R is the vector that goes from the origin to the final position of the particle.

Find the components of vector A and vector B. Vector A has a magnitude of 7.22cm and a direction of 270 degrees (or -90 degrees) from the positive x-axis. Vector B has a magnitude of 8.05 cm and a direction of 0 degrees (or 360 degrees) from the positive x-axis. Using trigonometry, we can find the x and y components of each vector as follows:

A_x = A cos(270) = 7.22 cos(270) = 0

A_y = A sin(270) = 7.22 sin(270) = -7.22

B_x = B cos(0) = 8.05 cos(0) = 8.05

B_y = B sin(0) = 8.05 sin(0) = 0

Add the components of vector A and vector B to get the components of vector R. Using vector addition, we can find the x and y components of the resultant vector as follows:

R_x = A_x + B_x = 0 + 8.05 = 8.05

R_y = A_y + B_y = -7.22 + 0 = -7.22

Find the magnitude and direction of vector R using Pythagoras’ theorem and inverse tangent function. The magnitude of vector R is given by the square root of the sum of the squares of its components, and the direction of vector R is given by the inverse tangent of its y component divided by its x component, as follows:

R = sqrt(R_x^2 + R_y^2) = sqrt(8.05^2 + (-7.22)^2) = sqrt(114.81) = 10.71 cm

theta = tan^-1(R_y / R_x) = tan^-1(-7.22 / 8.05) = -41.9 degrees

Adjust the direction of vector R according to its quadrant. Since vector R is in the fourth quadrant, where both x and y are positive, we need to add 360 degrees to its direction to get a positive angle measured counterclockwise from the positive x-axis, as follows:

theta = -41.9 + 360 = 318.1 degrees

Alternatively, we can express the direction of vector R as an angle measured clockwise from the negative x-axis, which is equivalent to subtracting its direction from 360 degrees, as follows:

theta = 360 - (-41.9) = 401.9 degrees

However, since angles are periodic with a period of 360 degrees, we can subtract multiples of 360 degrees from this angle to get an equivalent angle between 0 and 360 degrees, as follows:

theta = 401.9 - 360 = 41.9 degrees

Therefore, the direction of vector R is either 318.1 degrees counterclockwise from the positive x-axis or 41.9 degrees clockwise from the negative x-axis.

Hope this helps, and have a great day! =)

48 m/s in terms of km/h is 720.8 km/h. In terms of m/min is 2880 m/min, in terms of km/s is 0.048 km/s and in terms of km/min is 2.88 km/min.

To solve this question, we need to understand some terms. The unit of velocity is measured in m/s. It can be expressed in different units of velocity.

1 km (kilometer) = 1000 meter

1 h (hour) = 3600 seconds

1 minutes = 60 seconds

To convert m/s into km/h,

48 m/s * 3600/1000 =  172.8 km/h

To convert m/s into m/min,

48 m/s * 60 = 2880 m/min

To convert m/s into km/s,

48 m/s ÷ 1000 = 0.048 km/s

To convert m/s into km/minutes,

48 m/s * 60 / 1000 = 2.88 km/min

Therefore, the 48 m/s expressed is 172.8 km/h, 2880 m/min, 0.048 km/s and 2.88 km/min.

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48 m/s is equivalent to  172.8 km/h, 2880 m/min, 0.048 km/s, and 2.88 km/minute.

To express 48 m/s in different units of velocity:

km/h (kilometers per hour):

To convert m/s to km/h, we can use the conversion factor of 3.6 since 1 m/s is equal to 3.6 km/h.

48 m/s * (3.6 km/h / 1 m/s) = 172.8 km/h

Therefore, 48 m/s is equivalent to 172.8 km/h.

m/min (meters per minute):

To convert m/s to m/min, we can use the conversion factor of 60 since there are 60 seconds in a minute.

48 m/s * (60 m/min / 1 s) = 2880 m/min

Therefore, 48 m/s is equivalent to 2880 m/min.

km/s (kilometers per second):

Since 1 kilometer is equal to 1000 meters, to convert m/s to km/s, we divide the value by 1000.

48 m/s / 1000 = 0.048 km/s

Therefore, 48 m/s is equivalent to 0.048 km/s.

km/minute (kilometers per minute):

To convert m/s to km/minute, we first need to convert m/s to km/s (as calculated in the previous step) and then multiply by 60 to convert seconds to minutes.

0.048 km/s * 60 = 2.88 km/minute

So, 48 m/s is equivalent to 2.88 km/minute.

Hence, 48 m/s is equivalent to approximately 172.8 km/h, 2880 m/min, 0.048 km/s, and 2.88 km/minute.

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Answer:

4

Explanation:

Answer:

(a)3.09 m/sec (b)θ= 35.28° (c) t =3.43 sec

Explanation:

Solution

Given that:

The swimming speed of swimmer =5.35 m/s

The downstream angle = 30°

Now,

(a)we find speed of the current which is given below:

V = V swimmer + V river

Tan 30° = Vr/Vs

Thus

Vr = 5.35 * tan 30°

Vr = 5.35 * 0.5773

= 3.09 m/sec

(b)She would have velocity at direction such that she reaches across the shore

Then

Vs sin θ =Vr

sin θ = Vs/Vr

sin θ = 3.09/5.35

θ= 35.28°

Therefore, She had to make θ= 35.28° on another side of the river

(c) Thus

t = d/Vs cosθ

=15/5.35 * cos (35.28°)

t =3.43 sec

Question:

1) A tourist accidentally drops a camera from a 50.0 m high bridge. What is the speed of the camera as it hits the water? *

Answer:

28.0 m/s

Answer:

0.015 seconds

Explanation:

5/330=0.015

Answer:

0.015 seconds

Explanation:

divide 5 m and 330 m/s to get 0.015 seconds.

Microcomputer words typically have a length of 8 to 32 bits.

Microcomputers are compact, reasonably priced computers. The central processing unit (CPU), input unit, output unit, and storage unit are all components of these computers. The CPU is housed on a single semiconductor chip in microcomputers. Microcomputers are multipurpose computers made for people.

Nowadays, 32-bit (x86) and 64-bit CPU architectures are the two most common types (x86-64, IA64, and AMD64). The CPU can operate with different datapath widths, integer sizes, and memory address widths depending on the architecture.

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Despite being massless, photons do have momentum, and it is directly related to their wavelength. This relationship is described by the equation p = λ, where p is the momentum of the photon, λ is its wavelength, and h is Planck's constant. This relationship was first proposed by Einstein in his theory of the photoelectric effect. The correct answer is (d).

The fact that photons have momentum has been demonstrated through various experiments, such as the Compton scattering experiment, which showed that photons can transfer momentum to electrons. The momentum of photons is also important in understanding phenomena such as the Doppler effect, where the wavelength of light is affected by the motion of the source or observer.

It is important to note that while photons have momentum, they do not have mass, which sets them apart from other particles such as electrons. This means that the momentum of a photon cannot be calculated using the classical formula p = mv, where m is the mass of the particle and v is its velocity. Instead, the momentum of a photon is entirely determined by its wavelength.

In summary, while photons are massless, they do have momentum, which is related to their wavelength through the equation p = λ. This relationship has been demonstrated through various experiments and is an important aspect of understanding the behavior of light.

Therefore, This relationship was first proposed by Einstein in his theory of the photoelectric effect. The correct answer is (d).

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Answer:

A. Particle model.

Explanation:

The photoelectric effect describes when light shines on a piece of metal, and the metal releases electrons. The model of light behavior which best helps to explain this effect is the particle model. According to Isaac Newton, he postulated that light consists of little (tiny) particles which typically travels in a straight line and from his experimental investigation he observed that white light comprises of a mixture of colors.

Sir Newton observed that, when light shines on a piece of metal, the metal releases electrons because the energy of the tiny light particles are greater than the binding energy of the electrons residing in the metal. This theory is known as the particle model of light.

Answer:

the foiley like color doesn't absorb the heat it bounces off of it. it would be much better to have a black blanket

The characteristic common to both sound waves and light waves is that they (option A) transfer energy .Both sound waves and light waves are forms of energy that propagate through various mediums.

Sound waves are mechanical waves that require a medium, such as air, water, or solids, to travel. They involve the compression and rarefaction of the medium particles as the wave propagates.

Light waves, on the other hand, are electromagnetic waves that can travel through vacuum as well as various mediums, such as air or transparent materials. Light waves consist of oscillating electric and magnetic fields that propagate through space at the speed of light.

While sound waves are longitudinal waves, meaning that the particle oscillations are parallel to the direction of wave propagation, light waves are transverse waves, where the oscillations occur perpendicular to the direction of wave propagation.

Thus, the characteristic shared by both sound waves and light waves is that they transfer energy.

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The speed of sound in dry air at 20 degrees Celsius is approximately 343.4 meters per second (m/s).

The speed of sound in dry air can be calculated using the formula:

v = 331.4 + 0.6 * T

Where v is the speed of sound in meters per second (m/s) and T is the temperature in degrees Celsius.

Given that the temperature is 20 degrees Celsius, we can substitute this value into the formula and solve for v:

v = 331.4 + 0.6 * 20

v = 331.4 + 12

v = 343.4 m/s

Therefore, the speed of sound at 20 degrees Celsius in dry air is approximately 343.4 meters per second.

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The inductance required for an oscillator to generate 490 nm electromagnetic waves is 2.66 * 10⁻⁹ H.

An electromagnetic wave is an oscillating wave of electric and magnetic energy, travelling through space at the speed of light. It is a form of energy that is created when electric and magnetic fields vibrate in unison. Electromagnetic waves are made up of oscillating electric and magnetic fields that travel through the air and other materials.

The inductance required for an oscillator to generate 490 nm electromagnetic waves depends on the type of oscillator being used. The equation for calculating the required inductance is L = 1 / (2 * π * f * C), where L is inductance, f is frequency,
and C is capacitance.
In this case, the frequency would be f = c / λ,
where c is the speed of light and λ is the wavelength (490 nm).
Plugging in the values, we get L = 1 / (2 * π * (3 * 10⁸ / 490 * 10⁻⁹) * 19 * 10⁻¹²) = 2.66 * 10⁻⁹ H.
So, the inductance required for an oscillator to generate 490 nm electromagnetic waves is 2.66 * 10⁻⁹ H.

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When a gas contracts and heats, the thermal pressure will increase.

In a gas, thermal pressure is a result of the collisions between gas particles and the container walls. When the gas contracts, the particles become closer together, increasing the frequency and intensity of collisions. As a result, the thermal pressure increases. Similarly, when the gas is heated, the kinetic energy of the particles increases, leading to more energetic collisions and a higher thermal pressure. Therefore, both contraction and heating of a gas cause an increase in thermal pressure. This behavior is in accordance with the ideal gas law, which states that the pressure of a gas is directly proportional to its temperature when volume and number of particles remain constant.

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Answer:

the magnitude of the displacement after 5s is 137.31 m.

Explanation:

Given;

initial velocity of the projectile, u = 60 m/s

angle of projection, θ = 60°

time of motion, t = 5s

the vertical component of the velocity, \(u_y= u\ sin \theta = 60sin(60^0)\)

The magnitude of the displacement after 5s is calculated as;

\(h = u_yt -\frac{1}{2} gt^2\\\\h = 60sin (60^0)\times 5 - \frac{1}{2} (9.8)(5)^2\\\\h = 259.81-122.5\\\\h = 137.31 \ m\)

Therefore, the magnitude of the displacement after 5s is 137.31 m.

Answer:

Option A. 28 cm

Explanation:

Hooke's Law

If a force F is applied to a string of constant k, it stretches a distance of x. The relation between those variables is:

\(F=k*x\)

Note that the distance is not the actual length of the spring, but the elongation, or difference between the natural length of the spring and the stretched length.

The spring described has a natural length of 10 cm and is stretched to 22 cm when a force of 4 N is applied. The elongation is x=22-10=12 cm.

Applying Hooke's Law, we can find the value of k:

\(4\ N=k*12\ cm\)

Solving for k:

\(\displaystyle k=\frac{4\ N}{12\ cm}=\frac{1}{3}\ N/cm\)

Thus, the equation for F is:

\(\displaystyle F=\frac{1}{3}*x\)

Where x is in cm and F is in N.

If a force of F= 6 N is applied, we can find the new elongation:

\(\displaystyle 6=\frac{1}{3}*x\)

Thus:

x=18 cm

The new length of the spring is 10 cm + 18 cm = 28 cm

Option A. 28 cm

You need the atomic mass of calcium, oxygen and carbo, the balanced chemical equation and the molar ratio between Calcium carbonate and calcium oxide.

1. If you know the atomic mass of the elements, you can calculate the molar mass of Calcium Carbonate (CaCO3) and the mass of Calcium Oxide (CaO).

2. The balanced equation is CaCO3 -> CaO + CO2

3. The molar ratio between CaCO3 and CaO is 1:1, which means that the descomposing of one mole of calcium carbonate produce one mole of calcium oxide.

4- The last thing you should do is to conver the 4.7 kg of CaCO3 to moles and with the molar ratio calculate the mass of CaO

Explanation:

Any confusions you may ask!

Answer:

13.875Ω & 5Ω

Explanation:

in the first diagram:-

R = Rs + Rp + Rs'

Rp => \(\frac{1}{7} + \frac{1}{1} = \frac{1+7}{7} = \frac{8}{7} \\\)

Rp = \(\frac{7}{8}\) = 0.875

4 + 0.875 + 9 = 13.875Ω

in the second diagram:-

R= Rp + Rs + Rp'

Rp => 1/6 + 1/3 = 1+2/6 = 3/6 => 2

Rp' => 1/3+1/3+1/3 = 3/3 => 1

R = 2 + 2 + 1 = 5 Ω

Answer:

Option D is your answer ☺️☺️. If I'm right so,

Please mark me as brainliest. thanks!!!

Answer:

tempruter

Explanation:

Answer:

All i got to say is that he is dead dead

Explanation:

Answer:

1.6 ml

Explanation:

The equivalence point contains the correct response.

The titration's equivalence point is the concentration of titrant at which the analyte solution is entirely neutralized.

The equivalency point in an acid-base titration happens when there are equal amounts of base and acid in the solution, which only consists of salt and water.

The pH rises steadily when a strong base is added to a strong acid up until we approach the equivalence point, at which point a small increase in the volume of base added causes the pH to rise drastically.

The midway, which is halfway along the titration curve to the equivalence point, is where the pKa of weak acids or the pKb of weak bases are equal to the pH.

Thus, the concentration and pKa (or pKb) value of a weak acid can be determined using titration procedures (or a weak base).

Thus, throughout a titration, it is crucial to capture pH data over modest volumetric increments at the equivalency point.

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when watering your garden, you observe that it takes 30 seconds to fill up your 2 gallon watering can. The flow rate of the water from your hose is 252.36 cubic centimeters per second and the velocity of water as it exits the hose is 35.66 centimeters per second.

(a) The flow rate of the water from the hose can be calculated as the volume of water filled in 30 seconds divided by the time taken. The volume of water in 2 gallons can be converted to cubic centimeters by multiplying it by the conversion factor of 3,785.41 cubic centimeters per gallon. So, the volume of water in 2 gallons is:

2 gallons x 3,785.41 cubic centimeters/gallon = 7,570.82 cubic centimeters

The time taken to fill the can is 30 seconds. Therefore, the flow rate can be calculated as:

Flow rate = Volume / Time = 7,570.82 cubic centimeters / 30 seconds = 252.36 cubic centimeters per second

So, the flow rate of the water from the hose is 252.36 cubic centimeters per second.

(b) The velocity of water as it exits the hose can be calculated using the flow rate and the cross-sectional area of the hose. The cross-sectional area of the hose can be calculated using the diameter of the hose, which is given as 3 centimeters. The radius of the hose is half the diameter, so the radius of the hose is:

Radius = Diameter / 2 = 3 centimeters / 2 = 1.5 centimeters

The cross-sectional area of the hose can be calculated using the formula for the area of a circle:

Area = π x Radius^2 = π x (1.5 centimeters)^2 = 7.07 square centimeters

Now, using the flow rate and the cross-sectional area of the hose, the velocity of water can be calculated using the formula:

Flow rate = Velocity x Area

Rearranging the formula to solve for velocity, we get:

Velocity = Flow rate / Area = 252.36 cubic centimeters per second / 7.07 square centimeters = 35.66 centimeters per second

Therefore, the velocity of water as it exits the hose is 35.66 centimeters per second.

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The One strategy implemented to address the drug epidemic in Philadelphia is the creation of Comprehensive User Engagement Sites (CUES). These sites aim to tackle the widespread issue of drug addiction and related energy health concerns.

The CUES are safe spaces where individuals battling addiction can energy access various harm reduction services, such as clean syringes, medical support, and overdose prevention. These sites provide connections to addiction treatment programs and mental health services, helping people on their path to recovery. By offering safe and supervised spaces, CUES work to reduce public drug use, discarded syringes, and other related issues in the community. CUES also serve as educational hubs, raising awareness and providing information about the dangers of drug addiction and available resources for support. Lastly, these sites foster community engagement and collaboration, uniting various stakeholders in the fight against the drug epidemic. In summary, Comprehensive User Engagement Sites play a significant role in addressing the drug epidemic in Philadelphia. They provide harm reduction services, treatment programs, and community support, all while promoting a safer and healthier environment for the city's residents.

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Answer:

the stars which are red in color are cool.

Explanation:

The stars which has reddish color are cool in nature while those stars which has white and blue in color are very hot in nature. The stars change its color when they becomes hotter , first the star color reddish when they are cool but with increasing temperature it changes the color from reddish to orange then yellow. After yellow it turns green and finally get blue color when the stars are very very hot.

The force reduces if the distance is doubled since force and distance are inversely proportional to each other.

Greater gravitational forces will be used to attract heavier things since the gravitational force is directly proportional to the mass of both interacting objects. Therefore, the gravitational attraction between two objects grows as their respective masses do as well. The force of gravity between two objects is equal to their respective masses multiplied by two. If one of the items triples in mass, the gravitational pull between them will also triple.

F= k m₁m₂ / d²

Gravitational Force = (Gravitational Constant × Mass of first object × Mass of the second object) / (Distance between the centre of two bodies)2.

if distance is doubled then force reduces, because distance is inversely proportional to the force.

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The magnitude of the ball's change in velocity is approximately 2.2 m/s.

The change in velocity of the golf ball can be calculated using the vector subtraction of the initial velocity vector from the final velocity vector.

Initial velocity = 8 m/s at an angle of 0 degrees (since it is not specified in which direction the ball is traveling)

So, the initial velocity vector can be written as:

vi = 8 m/s [0 degrees]

Final velocity = 6 m/s at an angle of 45 degrees (since it rebounds at 45 degrees)

So, the final velocity vector can be written as:

vf = 6 m/s [45 degrees]

Now, we can calculate the change in velocity vector:

Δv = vf - vi

To do this, we need to resolve the velocity vectors into their x and y components:

vi = (8 cos 0) i + (8 sin 0) j = 8i

vf = (6 cos 45) i + (6 sin 45) j = (6/√2)i + (6/√2)j

Now we can calculate the change in velocity vector as:

Δv = vf - vi = [(6/√2) - 8]i + [(6/√2)]j

To find the magnitude of the change in velocity, we use the Pythagorean theorem:

|Δv| = √[(6/√2 - 8)²+ (6/√2) ²] ≈ 2.2 m/s

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Answer:

Sunscreen is like a shield, you would want a better shield to protect you than a weak one so companies try to make their sunscreen better than the rest.

Explanation: UV light is very dangerous to the skin so it helps with sunburn,skin sensitivity,etc.

High redshift Type Ia supernovae observations imply that the universe's expansion is accelerating due to their consistent intrinsic brightness and their role as "standard candles" in measuring cosmic distances.

Type Ia supernovae are thermonuclear explosions of white dwarf stars that have a well-defined peak luminosity, allowing astronomers to determine their distance from Earth accurately. When astronomers observe these supernovae at high redshifts, they are looking back in time to see the universe at an earlier stage. The redshift refers to the observed shift in the light emitted by these objects towards the red end of the spectrum, caused by the Doppler effect as they move away from us due to the expansion of the universe.

A higher redshift corresponds to a more distant and earlier stage of the universe. By comparing the observed brightness of high redshift Type Ia supernovae with their known intrinsic brightness, astronomers can deduce how far away these objects are and how the universe has expanded over time. Observations of these distant supernovae have revealed that they are dimmer than expected, indicating that they are farther away than anticipated based on the standard models of cosmic expansion.

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if the weight of the sdof is 20 kips and the stiffness is 50 kips/in, the natural frequency period of the structure is  12.5 seconds.

In structural dynamics, the natural frequency of a Single Degree of Freedom (SDOF) system is a characteristic property that describes how quickly the system oscillates or vibrates. The natural frequency is determined by the mass of the system and its stiffness.

To calculate the natural frequency, we need to convert the weight to mass and use the formula:

fn = 1 / (2π) * √(k / m)

First, let's convert the weight to mass:

Weight = mg

20 kips = m * 386.4 in/s² (acceleration due to gravity)

m = 20 kips / 386.4 in/s²

m = 51.73 lb/s²

Now, we can calculate the natural frequency:

fn = 1 / (2π) * √(k / m)

fn = 1 / (2π) * √(50 kips/in / 51.73 lb/s²)

fn ≈ 0.080 Hz

Finally, we can calculate the natural frequency period:

Period (T) = 1 / fn

T ≈ 1 / 0.080 Hz

T ≈ 12.5 seconds

Therefore, the correct natural frequency period of the SDOF structure is approximately 12.5 seconds.

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