What is the velocity of a motercycle traveling 13 km west in 3 hours

The intensity level of a sound increases by  approximately 4.77 decibels when you triple the intensity of a source of sound.

To determine the increase in decibels when you triple the intensity of a sound source, you can use the formula for calculating sound intensity levels, which is:

L2 = 10 * log10(I2 / I1)

In this equation, L2 is the increase in decibels, I2 is the final intensity, and I1 is the initial intensity. Since you want to triple the intensity, I2 will be 3 * I1. Plugging this into the formula, you get:

L2 = 10 * log10(3 * I1 / I1)

Simplifying the equation, you can cancel out I1 from both the numerator and denominator:

L2 = 10 * log10(3)

Now, calculate the value using the logarithm:

L2 ≈ 10 * 0.477

L2 ≈ 4.77 decibels

So when you triple the intensity of a source of sound, the intensity level increases by approximately 4.77 decibels.

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Developing an action plan is part of making decisions​ on the seven health skills, which are fundamental in healthcare.

The seven health skills can be defined as different aptitudes required to set healthcare decisions.

These health skills include:

In conclusion, developing an action plan is part of making decisions​ on the seven health skills, which are fundamental in healthcare.

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The maximum noise voltage that may appear at the input of a logic gate without changing the logical state of its output is termed as noise margin.

The noise margin is a measure of the immunity of a digital circuit to transient voltage surge or noise that can occur on the input signal lines. The noise margin of a digital circuit is an important consideration in the design of systems that are susceptible to electrical noise, such as automotive electronics, industrial control systems, and communication systems.

A large noise margin ensures that the circuit will operate correctly even in the presence of significant electrical noise. On the other hand, a small noise margin can result in circuit failure or incorrect operation, leading to system failure. The noise margin of a digital circuit is typically specified in terms of the voltage level required to change the logic state of the input.

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Answer:

In mathematics, an ellipse is a plane curve surrounding two focal points, such that for all points on the curve, the sum of the two distances to the focal points is a constant.

I don’t know how ellipse change tho sorry

Answer:

22.5km

Explanation:

Since 0.5 of an hour is half of an hour, you have to divide 45 by half, and you would get 22.5 km

In a given stationary wave, the distance between two successive nodes or antinodes is half of the wavelength.

The distance between identical points (adjacent crests) in adjacent cycles of a waveform signal carried in space or along a wire is defined as the wavelength.

The SI unit of wavelength is the meter, abbreviated as m. Multiples or fractions of a meter are also employed when measuring wavelength.

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(a) The momentum of the proton is determined as 5.17 x 10⁻¹⁸ kgm/s.

(b) The speed of the proton is determined as  3.1 x 10⁹ m/s.

The momentum of the proton is calculated as follows;

K.E = ¹/₂mv²

where;

v² = 2K.E/m

v² = (2 x 50 x 10⁹ x 1.602 x 10⁻¹⁹ J)/(1.67 x 10⁻²⁷)

v² = 9.6 x 10¹⁸

v = 3.1 x 10⁹ m/s

P = mv = (1.67 x10⁻²⁷ x 3.1 x 10⁹) = 5.17 x 10⁻¹⁸ kgm/s

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To provide an output of 40 W, approximately 134 solar cell modules would be necessary.

To determine the size of the solar cell array necessary to provide an output of 40 W, we need to calculate the total power generated by a single solar cell module and then divide 40 W by that power.

In this case:

Voltage (V) = 3 V

Current (I) = 0.1 A

Dimensions: Length (L) = 5.0 cm and Width (W) = 8.0 cm

First, let's calculate the power generated by a single solar cell module using the formula:

Power (P) = Voltage (V) * Current (I)

P = 3 V * 0.1 A

P = 0.3 W

So, a single solar cell module generates 0.3 W of power.

Now, we can determine the number of modules required to provide 40 W of power by dividing the desired output power by the power of a single module:

Number of modules = Desired power / Power per module

Number of modules = 40 W / 0.3 W

Number of modules ≈ 133.33

Since we cannot have a fraction of a module, we would need to round up to the nearest whole number.

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Answer:

100

Explanation:

60 minutes is an hour and there are 120 minutes so there are 2 hours. You divide 200 m by 2 and you get 100.

Answer: White dwarf supernovae all have roughly the same true peak luminosity

Explanation:

did it last year

Answer:

OPTION D 5 m/s

Explanation:

0.5 × 12 × v² = 150

sqrt(150/6) = v

v = 5 m/s

Answer:

Parallel processing

Explanation:

It is a parallel processing because it involves the brain processing many part of problem simultaneously.

The brain natural mode of information involves performing many task .

It is also ability of the brain to simultaneously process incoming stimuli or signals of different quality. It is a part of brain's vision and divide what is seen into four major parts which are color, motion, shape, and depth.

Answer: B)  Parallel processing

Answer:

5m/s ez

Explanation:

plz make me brainliest

The EMF of a cell represents its maximum potential difference, while the potential difference across the cell when passing a current through an external resistance is reduced due to the internal resistance of the cell.

The electromotive force (EMF) of a cell refers to the maximum potential difference that the cell can provide when it is not connected to any external circuit. It is essentially the voltage produced by the chemical reactions occurring within the cell. On the other hand, the potential difference across the cell when it is passing a current through an external resistance is often lower than the EMF.

This difference in values can be attributed to the internal resistance of the cell. When a current is drawn from the cell, it encounters resistance within the cell itself due to factors such as the resistance of the electrolyte and the internal structure of the cell. This internal resistance causes a voltage drop within the cell, reducing the potential difference across the external circuit.

According to Ohm's Law (V = I * R), when current flows through a resistance (R), a voltage drop (V) occurs. In this case, the internal resistance of the cell causes a voltage drop within the cell itself. Hence, the potential difference across the external resistance is slightly lower than the EMF of the cell.

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Answer:

Particles in solids are always vibrating (moving back and forth) in place. The vibrational motion of particles in solids is kinetic energy. Heat makes the particles in a solid vibrate faster, giving them more kinetic energy. Faster-vibrating particles bump into one another more often and hit each other harder.

Explanation:

Answer:

-35 \(m/s^2\)

Explanation:

Deceleration is the complete opposite of acceleration and is calculated by adding a negative sign to the formula for finding acceleration.

Since acceleration is calculated by diving the change in velocity with time, deceleration will become:

 Deceleration =   -Δv/t, where Δv = change in velocity and t = time

In this case, Δv = 70 m/s and t = 2 s, hence;

Deceleration = -70/2 = -35 \(m/s^2\)

The deceleration is 35 \(m/s^2\).

The Equilibrium Rule is a fundamental principle in physics that states that the vector sum of all the forces acting on an object with zero acceleration is equal to zero.

In simpler terms, if an object is at rest or moving at a constant velocity, the net force acting on it must be zero. This principle can be applied to various situations, including stationary objects, objects in motion, and even systems with multiple objects.

For example, if a book is placed on a table and remains stationary, the forces acting on it must balance out to zero. This means that the force of gravity acting downward must be equal to the force of the table pushing upwards.

Understanding and applying the Equilibrium Rule is essential in many fields, including engineering and mechanics, and is a foundational concept for further study in physics.

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The Equilibrium Rule is a fundamental principle in physics which states that if an object has zero acceleration, then the vector sum of all forces acting upon it must also be equal to zero. This means that the forces acting in opposite directions must be equal in magnitude and opposite in direction, creating a state of balance or equilibrium.

The Equilibrium Rule can be expressed mathematically as:

ΣF = 0

where ΣF represents the vector sum of all forces acting on the object.

When an object is at rest or moving with constant velocity, its acceleration is zero. According to Newton's Second Law, the net force acting on an object is equal to the product of its mass and acceleration:

ΣF = ma

If the acceleration is zero, then the net force must also be zero. This means that the vector sum of all forces acting on the object must be zero, as stated by the Equilibrium Rule.

It is important to note that the Equilibrium Rule only applies to objects with zero acceleration, and that objects in motion may have a non-zero net force acting on them, which causes them to accelerate.

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The resistance of the wire is 0.6 ohms. The magnitude of the electric field in the wire is 0.75 V/m.

To find the resistance of the wire, we can use Ohm's Law, which states that the resistance (R) is equal to the ratio of the potential difference (V) across a conductor to the current (I) flowing through it:

R = V / I

Given that the potential difference V is 1.5 V and the current I is 2.5 A, we can calculate the resistance:

R = 1.5 V / 2.5 A = 0.6 Ω

Therefore, the resistance of the wire is 0.6 ohms.

To find the magnitude of the electric field in the wire, we can use the relationship between the electric field (E), potential difference (V), and distance (d). For a uniform electric field in a straight wire, the electric field is given by:

E = V / d

Given that the potential difference V is 1.5 V and the length of the wire (distance) d is 2.0 m, we can calculate the magnitude of the electric field:

E = 1.5 V / 2.0 m = 0.75 V/m

Therefore, the magnitude of the electric field in the wire is 0.75 V/m.

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Answer: Ptolemy or Kepler or Tycho Brache

The ratio v/v2 of the speed of the comet at position 1 to the speed at position 2 is 10. The answer is (D) 10

To determine the ratio v/v2 of the speed of the comet at position 1 to the speed at position 2, we need to use the conservation of energy principle. The potential energy of the comet at position 1 is equal to its kinetic energy at position 2, since there is no external force acting on the comet. Therefore, we can equate the potential energy at position 1 to the kinetic energy at position 2:

mgh = (1/2)mv2²

where m is the mass of the comet, g is the acceleration due to gravity, h is the height of the comet at position 1, and v2 is the speed of the comet at position 2.

Solving for v/v2, we get:

v/v2 = sqrt(2gh)/v2

Since h is given as 100 times the radius of the earth, and the value of g is known, we can calculate the value of v/v2. Plugging in the numbers, we get:

v/v2 = sqrt(2*9.8*100*6371 km)/11 km/s

v/v2 = 10

Therefore, the answer is (D) 10. The speed of the comet at position 1 is 10 times the speed at position 2.

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Answer:

False, Sunspots appear dark (in visible light) due to their low temperature(cooler) than rest of the sun

Explanation:

Sunspots appear dark because they are much cooler( have low temperature than the rest of the surface contained by Sun. As they appear dark, but still they have very temperature that's why so hot. Sunspots have temperatures ranges  3,500 Celsius (3773 kelvin) and the surrounding surface of the sun has a temperature much higher of about 5,500 Celsius(5773 Kelvin). Even if we see a sunspot alone in space,  it will glow so brightly.

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Answer:

A.) Maritime Tropical (mT)

Explanation:

Continental tropical is the air mass that forms over warm land.

Maritime Polar is the air mass that forms over cold water.

Continental polar is the air mass that forms over cold land.

So therefore A or Maritime Tropical is the correct answer

Answer:

6 kilograms

Explanation:

force (N) = mass (kg) × acceleration (m/s²).  an object of constant mass accelerates in proportion to the force applied. If the same force is applied to two objects of different mass, the heavier object has less acceleration than the lighter object. Divide the newtons by the rate of acceleration, which will give you the mass of the object. The mass will be in kilograms, because a single newton represents the amount of force needed to move one kilogram one meter.