Maddy tripped and accidentally threw her phone off the hollywood cliff at 5m/s. It landed 20 away from the base of the cliff. how high is the cliff then?

When are the sun's rays perpendicular to the earth's surface at the equator, The Sun's rays are perpendicular to the Earth's surface on the equator during the March equinox and the September equinox.

These are the two periods of the year when the Sun's rays are directly overhead at the equator, resulting in equal lengths of day and night all across the world during the equinoxes. The June solstice and the December solstice are the other two events. Sun's rays are not perpendicular to the Earth's surface at the equator during these solstices, but instead at the Tropic of Cancer and the Tropic of Capricorn.

A perpendicular ray is one that comes at a 90-degree angle. This happens during the equinox. The term "equinox" comes from the Latin word "aequus," which means "equal," and "nox," which means "night." The vernal equinox is the day when the hours of daylight and nighttime are equal. It occurs on or around March 20 or 21.

The autumnal equinox occurs when the hours of day and night are equal. It occurs on or around September 22 or 23.

For more such questions on sun's rays

brainly.com/question/655489

#SPJ11

The frequency that the driver of the car hears the siren of an emergency vehicle traveling at 45 m/s and approaching a car heading in the same direction at a speed of 24 m/s is 538 Hz.

Doppler effect refers to a shift in the frequency of sound waves or light waves as they move toward or away from an observer. When the vehicle moves towards us, the sound waves are compressed, and their frequency increases, resulting in a higher pitch.

When the vehicle moves away from us, the sound waves are stretched out, and their frequency decreases, resulting in a lower pitch. This effect is also applicable to light waves.

The formula for calculating the Doppler effect is: f'= f(v±vᵒ)/(v±vᵰ), where,• f' is the frequency of the observed wave,• f is the frequency of the emitted wave,• v is the speed of the wave in the medium,• vᵒ is the speed of the observer relative to the medium,• vᵰ is the speed of the source relative to the medium.

In this case, the driver of the car hears the siren, which is moving towards him, hence the formula is:

f'= f(v+vᵒ)/(v±vᵰ)

Substituting the values of f, v, vᵒ, and

vᵰ,f' = 650(343+24)/(343-45)f'

= 538 Hz

Therefore, the driver of the car hears the siren at a frequency of 538 Hz.

To know more about frequency, refer

https://brainly.com/question/27151918

#SPJ11

Answer:

PRESSURE is a force exerted by the substance per unit area on another substance.

The key difference between water pressure and air pressure is that one is made up of water and the other is made up of air. Both air pressure and water pressure are based on and follow the same physical principals.

Explanation:

When the plates of a charged parallel plate capacitor are pulled apart, the capacitance decreases. As a result, the voltage across the capacitor increases, even though the charge remains constant.

If the plates of a parallel plate capacitor are pulled away from each other after being charged to voltage V and the charge on the plates remains fixed, the separation distance between the plates would increase. As a result, the capacitance of the capacitor would decrease since capacitance is inversely proportional to the distance between the plates. According to the formula Q = CV, where Q is the charge and C is the capacitance, with a fixed charge Q and decreasing capacitance C, the voltage V would increase.

Therefore, pulling the plates away from each other would cause the voltage across the capacitor to increase.

You can learn more about capacitor at

https://brainly.com/question/30529897

#SPJ11

The statement that describes the concept you're referring to is the Second Law of Thermodynamics.

The Second Law of Thermodynamics states that in any isolated system, the natural direction of energy transfer is from a higher energy state to a lower energy state. This principle is often summarized as "heat flows from hot to cold." It implies that energy tends to disperse or spread out, seeking equilibrium. Once equilibrium is reached, there is no further net movement of energy. This law has significant implications for understanding the behavior of heat, work, and energy in various systems, providing a fundamental basis for concepts such as entropy and the irreversibility of certain processes.

Learn more about Second Law of Thermodynamics here:

https://brainly.com/question/32217565

#SPJ11

Answer:

330m/s

Explanation:

v= total distance/ time

=3300/10

Answer:

Nuestro mejor amigo escuchará la música más rápido a una temperatura de 36 ºC (309.15 K)

Explanation:

Supongase que el aire se comporta como un gas ideal y que experimenta un proceso adiabático, entonces la velocidad del sonido (\(v\)), medida en metros por segundo, queda traducida en la siguiente fórmula:

\(v = \sqrt{\frac{\gamma \cdot R_{u}\cdot T}{M} }\) (1)

Donde:

\(\gamma\) - Coeficiente de dilatación térmica, sin unidad.

\(R_{u}\) - Coeficiente universal de los gases ideales, medido en kilogramo-metros cuadrados por mol-Kelvin-segundo cuadrado.

\(T\) - Temperatura, medida en Kelvin.

\(M\) - Masa molar, medida en kilogramos por mol.

Como se puede ver, la velocidad del sonido es directamente proporcional a la raíz cuadrada de la temperatura. Por tanto, nuestro mejor amigo escuchará la música más rápido a una temperatura de 36 ºC (309.15 K)

The new cost of the soap containing 5% water would be cheaper. However, it is important to note that the new batch of soap may not have the same quality as the original batch containing 30% water. The hotel may also not be satisfied with the quality of the new batch and may choose to switch suppliers.

In the case of a small soap factory in Laguna that supplies soap containing 30% water to a local hotel at P373 per 100 kilos FOB and then experiencing a stock out, the factory may provide a different batch of soap containing 5% water. This will change the cost of the soap. The cost of the soap containing 30% water is calculated using:P373 per 100 kilos = (30% x 100 kilos) water + (70% x 100 kilos) soap= 30 kilos water + 70 kilos soap Therefore, the cost of the soap component is:P373/70 kilos soap = P5.33/kilo soapOn the other hand, if the soap contains 5% water, the cost of the soap will change. The cost of the soap component in this case would be:P373/95 kilos soap = P3.93/kilo soap. Therefore, the new cost of the soap containing 5% water would be cheaper. However, it is important to note that the new batch of soap may not have the same quality as the original batch containing 30% water. The hotel may also not be satisfied with the quality of the new batch and may choose to switch suppliers.

To know more about soap  visit:

https://brainly.com/question/27807899

#SPJ11

Answer:

Cracking of an egg is a physical change since the egg and the stuff inside does not change but the shape or appearance of the shell changes.

Explanation:

Hope it helps

To find the current when the capacitor has acquired 1/4 of its maximum charge, we can use the equation for charging a capacitor through a resistor.

Given:

Capacitance (C) = 1.50 F

Resistance (R) = 12.0 Ω

Voltage (V) = 10.0 V

Fraction of maximum charge (q) = 1/4

The current (I) at any given time during the charging process can be calculated using the equation:

I = (V / R) * e^(-t / (RC))

Where:

e is the base of the natural logarithm (approximately 2.71828)

t is the time

To determine the current when the capacitor has acquired 1/4 of its maximum charge, we need to find the corresponding time. Since the charging process follows an exponential curve, the time required to reach 1/4 of the maximum charge will depend on the specific characteristics of the circuit.

Assuming the capacitor is initially uncharged, the maximum charge on the capacitor (Q_max) can be calculated using Q_max = C * V.

Once we have determined the time (t) it takes for the capacitor to reach 1/4 of its maximum charge, we can substitute it into the equation to find the current (I).

Regarding whether the current will be 1/4 of the maximum current, it is not necessarily true. The current during the charging process is not directly proportional to the charge on the capacitor. The charging current starts high and gradually decreases as the capacitor charges up. Therefore, the current when the capacitor has acquired 1/4 of its maximum charge may not be exactly 1/4 of the maximum current.

To provide a more accurate answer, we need to calculate the time it takes to reach 1/4 of the maximum charge. Without that specific information, we cannot determine the current at that point or its relationship to the maximum current.

Learn more about capacitor here:

https://brainly.com/question/31969363

#SPJ11

Answer:

Many forms of energy exist, but they all fall into two basic categories:

Explanation:

Thermal energy is due to the movement, and the kinetic energy associated with this movement, of molecules that make up an object or substance.

Hoped I helped U!! ❤️

Answer:

1.) mechanical energy and 2.) potential energy

Explanation:

Sound is made up of vibrations thermal energy consists of moving molecules in air or in an object, and mechanical energy is the combination of kinetic and potential energy of a moving object.

I hope this helps!!!!

Answer:

2000

Explanation:

ddoes rest : add the components

Let Mc represent the Chrysler's mass and Vc represent its speed. Let  Mf represent the Ford's mass and Vf represent its speed. Consequently, the center of mass's velocity is

V com = (McVc + MfVf) / (Mc + Mf)

           = (2750*70 + 1800*45) / (2750+1800)

           = 273500/4550

           = 60.110 km/hr

The two terms in the numerator have the same sign because the two velocities are in the same direction.

Speed is the ratio of the distance traveled to the time required to cover that distance. Speed is a scalar value because it just has a direction but no magnitude.

The unique location where the weighted relative position of the scattered mass adds to zero is known as the center of mass. Here is where a force can be applied to produce a linear acceleration without also producing an angular acceleration.

To know more about center of mass, click on the link below:

https://brainly.com/question/14639946

#SPJ4

Answer: 0.488  m

Explanation: I have my ways ;>

Answer:

A. Neon and argon

General Formulas and Concepts:

Explanation:

Elements that have a full valence shell (the outermost shell), are in Group 18 of the Periodic Table.

Because their outermost shell is full, they are inert, meaning that they do not like to bond or react with other elements.

Therefore, these gases with a stable full valence shell are known as Noble Gases.

A. would be the correct answer.

Answer:argon and krypton

Explanation:

Noble gases

The distance over which the force acts on the box, given that 70 N is applied to the 10 Kg box is 3.125 m

We'll begin by obtaining the acceleration of the box. Details below:

Net force = mass × acceleration

40 = 10 × acceleration

Divide both sides by 10

Acceleration = 40 / 10

Acceleration = 4 m/s²

Finally, we shall determine the distance. Details below

v² = u² + 2as

5² = 0² + (2 × 4 × s)

25 = 0 + 8s

25 = 8s

Divide both side by 8

s = 25 / 8

s = 3.125 m

Thus, we can conclude that the distance covered is 3.125 m

Learn more about distance travelled:

https://brainly.com/question/18265275

#SPJ1

Answer:

B

Explanation:

The pancreas is responsible for regulating blood sugar, exercise gives it less work to do

Excercise is particularly beneficial for the pancreas because physical activity positively impacts blood sugar, giving the pancreas less work. Correct option is B.

When you engage in physical activity, several things happen that benefit the pancreas:

Increased Insulin Sensitivity: Exercise helps improve the body's sensitivity to insulin. This means that cells become more responsive to the insulin signal, allowing glucose to enter the cells more effectively. This can help prevent insulin resistance, a condition where cells don't respond properly to insulin and blood sugar levels rise.

Improved Blood Sugar Regulation: Exercise can lower blood sugar levels by facilitating the uptake of glucose into cells for energy. This can reduce the burden on the pancreas to produce excess insulin to manage high blood sugar levels.

Reduced Risk of Type 2 Diabetes: Regular physical activity is associated with a reduced risk of developing type 2 diabetes, a condition characterized by impaired blood sugar regulation. By helping maintain healthy blood sugar levels, exercise supports the pancreas in its role of insulin production.

To know more about pancreas:

https://brainly.com/question/33716745

#SPJ3

Assuming the box is sitting on a flat surface, static friction would have a maximum magnitude of

0.309mg = 0.309 (15.18 kg) (9.80 m/s²) ≈ 45.97 N

so the applied force should have at least this magnitude.

The acceleration of the block is 6.4 m/s².

To calculate the acceleration of the block, we need to consider the forces acting on it.

The applied force is 40 N, and since it is the only horizontal force in the direction of motion, it is the net force acting on the block.

The frictional force opposing the motion is 8 N.

The acceleration, we can use Newton's second law, which states that the net force acting on an object is equal to its mass multiplied by its acceleration (F = ma).

The net force is the difference between the applied force and the frictional force:

40 N - 8 N = 32 N.

Now, we can plug the values into Newton's second law:

32 N = 5 kg × a.

Solving for the acceleration (a), we get

a = 32 N / 5 kg

a = 6.4 m/s².

Therefore, the acceleration of the block is 6.4 m/s².

For such more questions on

https://brainly.com/question/26408808

#SPJ8

Answer: use the step down transformers to reduce these voltages in the power lines before they are supplied to the users.

Explanation:

Answer:

It passes through a step-down transformer.

Explanation:

Electric current in power lines must be stepped down before they enter our homes because they carry a very high voltage.

The voltage can destroy appliances that have very low voltage.

A Satellite revolves around the plant at altitude equal to R , radius of planet . The relationship between new gravitational force (f₄) and gravitational force f₀ is f₄ = 4 f₀.

.

Gravity is the force that attracts any two objects that have mass. Gravity is called gravitational force because it always tries to pull mass together and never push it away. In fact, every object, including you, is pulling on every other object throughout the universe! This is called Newton's law of universal gravitation. It is very noticeable in celestial bodies with huge masses such as the Sun, Earth, and Moon. This is because the force is proportional to the mass of the object. It is responsible for the movement of the planets around the sun and the moon around the earth. People also exert forces on each other, but due to their relatively small mass this is not very important . It is noted by G and mathematically ,

Gravitational force= Gm₁×m₂ /d²

where m₁ and m₂ are masses of two objects and d ----> distance between the centres of two objects and G is gravitational constant.

In question we one body is planet and other will be satellite.

Let us consider

M ----> Mass of plant

m------> mass of satellite

R ---> radius of planet

In first case, when satelite at a distance say altitude is equal to radius of planet (R) and the distance between the centres of two masses is 2R. Gravitational force between them is

(f₀ ) = GMm / (2R)²= GMm/ 4R² ---(1)

where, G---> gravitational constant

In second case, the satalite is on surface of a planet and distance between two masses is R.

New gravitational force between two bodies is

f₄ = GMm/ R²-----(2)

comparing (1) and (2) we get,

f₀ = f₄/4 => f₄ = f₀

Hence, the relationship between new gravitational force (f₄) and and gravitational force (f₀) is f₄= 4f₀.

To learn more about Gravitational force, refer:

https://brainly.com/question/862529

#SPJ4

Multiple shadow regions can be observed in the wall behind the keyhole of a door. Option B is correct.

It is a phenomenon that happens when a wave (Light) is passed through a narrow aperture or a sharp edge, the light bends at the edges.

The light bends at the edges because the sharp edges have less diameter than the wavelength of light.

Therefore, multiple shadow regions can be observed in the wall behind the keyhole of a door.

Learn more about diffraction:

https://brainly.com/question/10303995

Answer: B) It spreads out into multiple shadow regions.

Explanation:

I got it right on edge

Answer:

D

Explanation:

Damage to the sun is not a negative effect of the way we use science because we can't affect the sun due to its long distance from us.

Humans negatively affected environment by using science because with the help of science we made new technologies which leads to Climate Change, Pollution and Overuse of resources.

So we can conclude that option D is the right answer.

Learn more about science here: https://brainly.com/question/17216882

#SPJ5

The energy transfer which cannot be happened is option c , at the bottom of the swing, the kinetic energy gets converted completely into its potential energy thus, it have no speed when it reached the bottom.

Kinetic energy of a body is generated by virtue of its motion. Kinetic energy increases as its mass and velocity increases. Potential energy of a body is the energy stored on it when it comes to rest.

When an object is falling freely to the ground its kinetic energy is converting to the potential energy up to the point it reaches the ground. When it touches the ground, the kinetic energy converts back to potential energy.

Therefore, when the child in the swing comes down from a height its speed is increasing and have greater kinetic energy but this is converted to potential energy when it reach the bottom. Hence no speed it have at the bottom.

Find more on kinetic energy:

https://brainly.com/question/26472013

#SPJ6

Answer:

A

Explanation:

Answer:

A. manipulate the independent variable