A skateboarder travelling at 9.5 m/s starts to travel up the side of a half pipe. Calculate the maximun height the skateboarder can reach.​

Answer:

the number of protons.

Explanation:

the atomic number is the number of protons in the nucleus of an atom. the number of protons Define the identity of an element.

Answer:

Do u want to talk?

Explanation:

Answer:

You found answer yet?

Explanation:

Answer:

I think its frequency

Explanation:

Answer:

its B or A thank me please

Answer:

lose 2

Explanation:

Sr is an alkali metal which forms 2+ ion.

If the rods P and Q repel each other, that means they have the same charge signs (both are positive or both are negative)

Since the rods P and R attract each other, that means they have opposite charge signs (one is positive and the other is negative).

Looking at the options, the only one that can represent the signs of the charges on the rods is the third option. (P and Q have the same charge sign, P and R have different charge signs)

There are 20,971,520 strings of eight English letters that contain no vowels when letters can be repeated.To calculate the number of strings of eight English letters that contain no vowels.

we need to consider the total number of possible choices for each letter position.

In the English alphabet, there are 26 letters, including five vowels (A, E, I, O, U) and 21 consonants.

Since we want to create strings without vowels, we can choose any of the 21 consonants for each position in the string.

For each of the eight positions in the string, there are 21 choices (consonants) available.

Therefore, the total number of strings can be calculated as:

Total number of strings = Number of choices for each position ^ Number of positions

Total number of strings = 21^8 = 20,971,520

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The principle of overload at work in this scenario is the principle of increasing intensity or difficulty.  

The principle of overload that is at work in this scenario is the principle of increasing intensity or difficulty. By running on sandy hills, Ehren is adding an extra challenge to his workout, which will help him increase his mile run from eight to six minutes.

Running on sandy hills increases the intensity of the workout because the sand provides an unstable surface, requiring more effort to maintain balance and propel forward. This increased effort and resistance help to strengthen and condition Ehren's leg muscles, cardiovascular system, and overall endurance.

The principle of overload states that in order to see improvements and progress in fitness, one must gradually increase the demands placed on the body. By running on sandy hills, Ehren is effectively increasing the demand on his body compared to running on a flat surface. This increased demand forces his body to adapt and become stronger, ultimately helping him achieve his goal of running a mile in six minutes.

Therefore, the principle of overload at work in this scenario is the principle of increasing intensity or difficulty.  

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To design a new rubber band that could stretch farther without breaking, material properties would you try to maximize is (A)  Ductility (Strain at Break)

If you were asked to design a new rubber band that could stretch farther without breaking, the material property you would try to maximize is ductility, which is the strain at break.

Ductility is a measure of a material's ability to deform under tensile stress before it breaks. A higher ductility means the rubber band can stretch farther before it reaches its breaking point, which is desirable for a rubber band that needs to stretch without breaking.

Hardness, density, yield strength, and stiffness are all important material properties, but they do not directly affect a rubber band's ability to stretch farther without breaking. Hardness measures a material's resistance to indentation, density measures the mass per unit volume, yield strength measures the stress at which a material begins to deform plastically, and stiffness measures a material's resistance to deformation under load.

Therefore, the correct option is (A)  Ductility (Strain at Break)

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Answer:

C

Explanation:

It is directly propotional to the amount of charge and inversly propotional to distance.

Answer:

C. Distance and amount of charge

Explanation:

The magnitude of the electric potential depends on which factors?

Distance and amount of charge

Both statements A and E are true concerning sign conventions for image formation.

A) When the center of curvature of a spherical mirror is on the same side as the reflected light, the radius of curvature is positive; otherwise, it is negative.

E) When the object is on the same side of the reflecting or refracting surface as the incoming light, the object distance is positive; otherwise, it is negative.

A) This sign convention helps distinguish between concave and convex mirrors based on the sign of their radius of curvature. A positive radius of curvature indicates a concave mirror, while a negative radius of curvature indicates a convex mirror.

E)This sign convention is used to determine the sign of the object distance in the equations related to image formation. If the object is on the same side as the incoming light, the object distance is positive. If the object is on the opposite side, the object distance is negative.

The second statement mentioned in the question (regarding magnification) is not correct. The sign of the magnification depends on whether the image is upright or inverted, not the other way around. For an upright image, the magnification is positive, and for an inverted image, the magnification is negative.

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An internet search to find information about the effects of electromagnetic fields on public health is highly dangerous to humans and other living organisms.

Electromagnetic fields may be defined as a combination of invisible electric and magnetic fields of force. They are typically generated by natural phenomena like the Earth's magnetic field but also by human activities, mainly through the use of electricity.

Electromagnetic fields highly impact numerous members of the public and have attributed a diffuse collection of symptoms to low levels of exposure to electromagnetic fields at home. Reported symptoms include headaches, anxiety, depression, nausea, fatigue, and loss of appetite.

Moderate to high Exposure to magnetic fields is strong enough can lead to dizziness, seeing light flashes, and feeling tingling or pain through stimulation of nerves. Exposure to radiofrequency fields that are strong enough can lead to the heating of body tissue, and result in damage to tissues and organs.

Therefore, an internet search to find information about the effects of electromagnetic fields on public health is well described above.

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Answer:

01.

Explanation:

Half the acceleration. Its heavier and moves slower. If it moved the same acceleration, the forces would also have to be doubled since the mass was.

Compact fluorescent light usually has a B. Longer life compared to an incandescent bulb producing the same number of lumens.

CFLs are designed to be more energy-efficient than incandescent bulbs. They use less energy to produce the same amount of light, which makes them more efficient. This efficiency leads to a longer lifespan for the CFL compared to incandescent bulbs. In general, a CFL can last up to 10 times longer than an incandescent bulb.

To summarize:
- A compact fluorescent light (CFL) has a longer life compared to an incandescent bulb producing the same number of lumens.
- This is due to the higher energy efficiency of CFLs, which allows them to use less energy and have a longer lifespan.

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Answer: A& B

Explanation:

We have not yet found meteoroids and meteorites derived from option (B) the Moon.

Meteoroids are small celestial bodies that orbit the Sun and can vary in size from tiny dust particles to larger rocks. When a meteoroid enters the Earth's atmosphere and burns up due to friction, it is called a meteor. If a meteoroid survives the journey through the atmosphere and lands on the Earth's surface, it is called a meteorite.

Meteorites can come from various sources in the solar system, including asteroids, comets, and even other planets like Mars. Scientists have identified and studied meteorites originating from these sources. They provide valuable insights into the composition, history, and processes occurring in these celestial bodies.

However, when it comes to the Moon, no meteoroids or meteorites have been identified as originating from it. This is due to several factors. The Moon's surface lacks a significant atmosphere to slow down incoming meteoroids, causing them to impact the surface at high speeds, which can result in their destruction or disintegration. Additionally, the Moon's relatively weak gravitational field makes it more challenging for meteoroids to be captured and retained as meteorites.

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The particles or energy in a transverse wave travel up and down, perpendicular to the direction of the wave travel.

Electromagnetic waves are type of wave that do not require material medium for their propagation.

This type of waves travels in vacuum or in open medium.

Examples of electromagnetic waves include the follows;

Electromagnetic waves are known as transverse waves due to their mode of propagation.

In transverse wave, the particles of the medium travels perpendicular to their mode of vibration.

Thus, the particles or energy in a transverse wave travel up and down, perpendicular to the direction of the wave travel.

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Answer:

a

Explanation:

worng worng

Given :

Mass of object, m = 1.5 kg.

To Find :

The momentum of boulder dropped from a cliff after 3 seconds.

Solution :

Speed of boulder after 3 seconds of free fall is given by :

v = u + gt       ( Equation of motion )

v = 0 + 10×3    ( g = acceleration due to gravity )

v = 30 m/s

Now, momentum is given by :

P = m × v

P = 1.5 kg × 30 m/s

P = 45 kg m/s

Therefore, momentum of boulder is 45 kg m/s.

Answer:

Longitudinal waves

Explanation:

With sound waves, the energy travels along in the same direction as the particles vibrate. This type of wave is known as a longitudinal wave , so named because the energy travels along the direction of vibration of the particles.

Answer:

striking a hammer on a nail

Answer:

The person above is correct i got it right on my test :)

Explanation:

Answer:

3.6 m/s

Explanation:

Answer:

5 Stars

Explanation:

Because every Star from 1 to 5 vary energy consumption of the electrical device...So 5 star product uses a very less energy compared to 1 star product...

Hope it is helpful

There are 0 to 5 star are used in the star rating label of electrical appliance.

The appliance is more energy efficient if it has more stars on the Energy Rating Label. To perform at the same level as comparable models of the same size or capacity, efficient appliances require less electricity. A model will use less energy and cost you less to run if it is more energy efficient.

Example a 3-star refrigerator saves a lot more energy compared to a 2 star.

Number of stars in the star rating label of an electrical appliance should be used is five for most efficient electrical device.

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The initial acceleration of the wishbone is 13.1 m/s².

This can be defined as the rate of change of velocity. The S.I unit of acceleration is m/s²

To calculate the acceleration of the wishbone, we use the formula below.

⇒ Formula:

⇒ Where:

⇒ make a the subject of the equation

From the question,

⇒ Given:

⇒ Substitute these values into equation 2.

Hence, The initial acceleration of the wishbone is 13.1 m/s².

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Mass and weight aren't  exchangeable terms. In  discrepancy to weight, which is a  dimension of how the force of  graveness works upon a mass, mass is the  quantum of substance in a material.  

The  quantum of matter in a body is quantified by its mass. m or M are applied to  define mass.    Weight is a unit used to describe how  important force is being applied to a mass as a result of the gravitational acceleration. W is generally used to indicate weight. The following formula, which gives weight as mass times the gravitational acceleration( g),

\(W =m x g\)

\(2. g= GM/r^2\)  Newton's law of universal gravitation,

  \(2.7 = (6.67x10^-11)M/(1/3 x 6.38 x 10^6)^2\)

     \(M= 1.83 x 10^23 kg\)

\(3. 9.8/2.7 = 3,63\) times smaller on planet X than on Earth.

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Answer:

The outer shell of the earth, the lithosphere

Explanation:

The seven major plates are the African plate, Antarctic plate, Eurasian plate, Indo-Australian plate, North American plate, Pacific plate and South American plate.

The formula for a two-dimensional vector field :

 F = F(x,y) = <u(x,y), v(x,y)> = u i + v j;

Given data :

The formula for a two-dimensional vector field will be:

F = F(x,y) = <u(x,y), v(x,y)> = u i + v j;

Where (i,j) are unit vectors in the coordinate directions

To make all vectors parallel to the x-axis

v(x,y)=0

F(x,y) = <u(x,y),0>

To make all vectors on a horizontal line having the same magnitude.

u(x,y) = u(y)

so

F(x,y) = <u(y),0> = u(y) i

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Answer:

On Waves. Quantum mechanically, an electron can be described by a wave function oscillating in space and time that has mean values equal to the expectation values of observables corresponding to given operators. ... Electrons are fermions. They are charged particles. in short the quantum theory

i hope its helpful !

Answer:

A

Explanation:

Hi,

Your question is "which graph represents uniform motion", the answer would be option 1

Have a good one!

Answer:

Option 1 is correct

Explanation:

Uniform means that the speed remains same as the time increases