discuss how devastating a 7.7 - magnitude earthquake is.

To find the mass of the object, we can use the formula for kinetic energy:

Kinetic energy (KE) = (1/2) * mass * velocity^2

Given that the kinetic energy is 426 J and the velocity is 13 m/s, we can rearrange the equation to solve for the mass:

mass = (2 * KE) / (velocity^2)

Substituting the given values:

mass = (2 * 426 J) / (13 m/s)^2

mass = (2 * 426 J) / (169 m^2/s^2)

mass = 852 J / 169 m^2/s^2

mass = 5.04 kg

Therefore, the mass of the object is 5.04 kg.

Answer:

3. Ice.

4. Stay the same size but with different internal pressure.

5. Stars in the galaxy

Explanation:

Hope it helped!!

The ray does not bend when it enters the semi circular glass block - Light ray incident on semicircular block at 90 degrees, therefore there is no change in the direction of ray at P.

Electromagnetic radiation that falls within the region of the electromagnetic spectrum that the human eye can see is known as light or visible light.

Light is electromagnetic radiation that the human eye can perceive. From radio waves with wavelengths measured in meters to gamma rays with wavelengths shorter than around 1 1011 meters, electromagnetic radiation occurs throughout an incredibly broad range of wavelengths.

Light governs our sleep-wake cycle and is crucial to our health and wellbeing. In actuality, "light" that is visible is a type of radiation, which is just energy that moves in the form of electromagnetic waves. It can alternatively be explained as a flow of "wave-packets," or particles, known as photons.

To learn more about lights please visit -
https://brainly.com/question/16713206
#SPJ9

1,000 J of energy are needed to melt 10 g of a solid substance that is already at its melting point ,  the heat of fusion of the substance is 548 joules .

Heat of fusion, also known as enthalpy of fusion or latent heat of fusion, is the amount of energy required to melt or freeze a substance under constant pressure conditions. When it comes to chemistry, "fusion" is basically synonymous with "melting." In the classroom, heat of fusion is typically used when a substance is at its melting or freezing point. In such instances, most people consider heat of fusion to be a constant.

Water, for example, has a heat of fusion of 334 J/g at its melting point of 0°C. At 0°C, one grams  of liquid water requires 334 Joules of energy to completely freeze into ice. In addition, one grams of ice requires 334 Joules of energy to melt entirely.

q = m×∆Hf

q: Total change in heat energy (in Joules)

∆Hf: Heat of fusion of substance (in Joules per gram)

m: Mass of substance (in grams)

To know more about fusion heat , visit ;

brainly.com/question/14053504

#SPJ1

I hope its helps you . you can also write 1.44×10^3 it will be better

The escape velocity (Ve) which is required by the particle to escape the gravitational field of the Earth is 110.87  × 10³ km/sec.

Escape velocity is the minimum velocity that a moving body such as a rocket must possess to escape from the gravitational field of a celestial body like the Earth and move outward into space.

Particle is above the surface of Earth (r) = 1600 km = 16 × 10⁵m

Radius of Earth (Re) = 6400 km = 64 × 10⁵m

Acceleration due to gravity (g) = 9.8m/s²

To find the value of escape velocity (Ve),

We know,

Ve = √2 gR

Ve = √2 g (Re + r)

Ve = √2 g (64 + 16) × 10⁵

Ve = √2 × 9.8 × 80 × 10⁵

Ve = 1108.743 × 10⁵

Ve =  110.8743 × 10⁶

Ve = 110.87 × 10³ km/sec.

Therefore, the escape velocity (Ve) is 110.87 × 10³ km/sec.

Learn more about Escape velocity here:

https://brainly.com/question/14297933

#SPJ1

Answer:

s = 13.6 m

Explanation:

Ann is driving at a constant speed. Hence, the formula of uniform motion shall be used here. The formula for the distance traveled during uniform speed motion is given as follows:

s = vt

where,

s = distance covered by the car before it begins to slow down= ?

v = uniform speed of car = (63 km/h)(1000 m/ 1 km)(1 h/3600 s) = 17.5 m/s

t = time to react before applying brakes = 0.777 s

Therefore, using the values in the equation, we get:

s = (17.5 m/s)(0.777 s)

s = 13.6 m

Answer:

The velocity of the canoe relative to the river is 0.385 m/s, S37.26⁰W

Explanation:

Given;

velocity of the canoe relative to the earth, \(V_{r/e} = 0.33 \ m/s\)

velocity of the river relative to the earth, \(V_{r/e} = 0.54 \ m/s\)

The velocity of the canoe relative to the river is calculated as;

\(V_{(c/r)x} = V_{(c/e)x}- V_{(r/e)x} \ \ ----(1)\\\\V_{(c/r)y} = V_{(c/e)y}- V_{(r/e)y} \ \ ----(2)\)

The x - component of the velocity of the canoe relative to the earth;

\(V_{(c/e)x} = 0.33 \times cos \ 45^0\\\\V_{(c/e)x} = 0.2333 \ m/s\)

The y-component of the velocity of the canoe relative to the earth;

\(V_{(c/e)y} = 0.33 \times sin \ 45^0\\\\V_{(c/e)y} = 0.2333 \ m/s\)

Note: velocity of the river relative to the earth has only x-component = 0.54 m/s

Apply equation (1) and (2) to calculate the velocity of the canoe relative to the river;

\(V_{(c/r)}x = 0.2333 - 0.54 = -0.3067 \ m/s\\\\V_{(c/r)}y = 0.2333 - 0 = 0.2333 \ m/s\\\\The \ resultant \ velocity;\\\\V_{c/r} = \sqrt{(-0.3067)^2 + (0.2333)^2} \\\\V_{c/r} = 0.385 \ ms/\\\\The \ direction:\\\\\theta = tan^{-1} (\frac{0.2333}{0.3067} ) = 37.26^0 \ south \ west \ of \ the \ river\)

The magnetic field in the region is into the paper and has a magnitude of 60 mT and the tension in either wire is 0.096 N.

To find the tension in either wire, we can apply the equation for the force experienced by a current-carrying wire in a magnetic field.

The force experienced by a current-carrying wire in a magnetic field is given by the equation F = B * I * L * sin(θ), where B is the magnetic field strength, I is the current, L is the length of the wire, and θ is the angle between the wire and the magnetic field.

In this case, the wire is suspended horizontally by two vertical wires, and the magnetic field is into the paper. Since the wire is horizontal, the angle between the wire and the magnetic field is 90 degrees, so sin(θ) = 1.

The force experienced by the wire due to the magnetic field is F = B * I * L.

Given:

Current (I) = 8.0 A

Magnetic field (B) = 60 mT = 60 * 10^(-3) T

Length of the wire (L) = 40 cm = 40 * 10^(-2) m

Substituting the given values into the equation, we get:

F = (60 * 10^(-3) T) * (8.0 A) * (40 * 10^(-2) m)

Simplifying the expression, we find:

F = 0.192 N

Since the wire is suspended by two vertical wires, the tension in each wire will be half of the total force. Therefore, the tension in either wire is 0.192 N / 2 = 0.096 N.

Know more about magnetic field here:

https://brainly.com/question/14411049

#SPJ8

Answer:

0.67m/s

Explanation:

Given parameters:

Distance  = 4m

Time taken  = 6s

Unknown:

Speed  = ?

Solution:

Speed is the distance covered per unit of time.

It is mathematically expressed as;

  Speed  = \(\frac{distance}{time}\)  

  Speed  = \(\frac{4}{6}\)    = 0.67m/s

Explanation

the acceleration is the change of velocity in a determined tiem, it can be found by using the expression

so

let

replace in the expression

therefore, the answer is

I hope this helps you

The techniques that scientists can use to determine the characteristics of Earth's layers include:

Waves were used by scientists to study the layers of the Earth. This was done through the use of seismic waves. These are the waves that are generated by nuclear test explosions.

Also, another technique to determine the characteristics of Earth's layers is the use X-rays to obtain a view of Earth's interior layers.

Read related link on:

https://brainly.com/question/14646338

Answer:

study how seismic waves travel through different layers

use X-rays to obtain a view of Earth's interior layers

:)

Explanation:

Answer:

a

 \(Q_e  =  -4.39 *10^{11}  \  C \)

b

\(Q_p  =  + 2.395*10^{-8} \  C \)

Explanation:

Generally the number of electron in the given mass is  mathematically evaluated as

        \(N_e =  \frac{2.5}{m_e }\)

Here  m_e is the mass of electron with value \(m_e =  9.11 * 10^{-31} \  kg\)

    =>  \(N_e =  \frac{2.5}{ 9.11 * 10^{-31} }\)

       =>  \(N_e =2.74 *10^{30} \  electrons \)

The total electric charge is mathematically represented as

       \(Q_e  =  N_e  *  e\)

Here e is the charge on a single electron with value  \(e  =  1.60 *10^{-19}  \  C\)

 So

          \(Q_e  =  -2.74 *10^{30}   *  1.60 *10^{-19} \)

          \(Q_e  =  -4.39 *10^{11}  \  C \)

The  negative sign is because we are considering electron

Generally the number of  protons in the given mass is  mathematically evaluated as

    \(N_p =  \frac{2.5}{m_p }\)

Here  m_p is the mass of electron with value \(m_e =  1.67 * 10^{-27} \  kg\)

    =>  \(N_p =  \frac{2.5}{ 1.67 * 10^{-27} }\)

       =>  \(N_p =1.497 *10^{27} \  protons \)

The total electric charge is mathematically represented as

       \(Q_p  = + N_p  *  e\)

Here p is the charge on a single proton with value  \(p  =  1.60 *10^{-19}  \  C\)

 So

          \(Q_p  =  +1.497 *10^{27}   *  1.60 *10^{-19} \)

          \(Q_p  =  + 2.395*10^{-8} \  C \)

Answer:

Earth rotates on its axis from west to east approximately every 24 hours

Explanation:

hope this helps :)

Answer:

a = 3.54 m/s²

direction = 48.1° north of east

Explanation:

Add up the x and y components of the two applied forces, then determine the resultant, R

∑Fx = cos25(0.40 N) + cos65(0.54 N) = 0.591 N

∑Fy = sin25(0.40 N) + sin65(0.54 N) = 0.6585 N

R = √0.59² + 0.6585² = 0.884 N = Fnet

Ф = tan⁻¹(0.6585/0.59) = 48.1° north of east

Fnet = ma

a = Fnet/m = 0.884 N / (0.25 kg) = 3.54 m/s²

Answer:

False

Explanation:

Answer:

fg = 352.8 N

fn = 352.8 N

Explanation:

Weight is also known as force of gravity

Because the object is at rest (no work) is done or in other words no frictional force.

Or Fnet= fn + fg = 0

so start with fg

fg= m x g

fg = 36 kg x 9.8m/s

fg = 352.8 N

Because the book is at rest, normal force will be the same

fn = 352.8 N

Answer:

Weight of book = 360N

Normal Force = 360N

Explanation:

Answer: The answer is D. KNO3

Explanation:

The graph shows that the KN03 going straight up from the temperature sign so you reversed that so that it will make it to 90°C to 30°C

To solve this we must be knowing each and every concept related to solubility. Therefore, the correct option is option D among all the given options.

The greatest amount of one material that may be dissolved in the other is referred to as its solubility. It is the most solute that may be dissolved into a solvent near equilibrium, resulting in a saturated solution.

When specific circumstances are satisfied, more solute can be dissolved further than the solubility limit point, resulting in a supersaturated solution. Adding extra solute after saturation or supersaturation does not enhance the concentration in the solution. Rather, the excess solute begins to precipitated out of solution. KNO\(_3\) is the compound that would have the greatest percentage recovered after cooling a saturated solution of that compound from 90°C to 30°C.

Therefore, the correct option is option D.

To know more about solubility, here:

https://brainly.com/question/14366471

#SPJ2

The earth-atmosphere energy balance is achieved as the energy from the Sun is the same as the energy lost by the Earth. Thus, the correct option is C.

The Earth-atmosphere energy balance refers to the balance between the energy the Earth receives from the sun and the energy the Earth radiates back into space.

The earth-atmosphere energy balance is achieved as the energy received from the Sun balances the energy lost by the Earth's surface back into space. Through this mechanism, the Earth maintains a stable average temperature and therefore also a stable climate on the planet.

Therefore, the correct option is C.

Learn more about energy transfer here: brainly.com/question/9991607

#SPJ1

Answer:

The lithosphere is divided into huge slabs called tectonic plates. The heat from the mantle makes the rocks at the bottom of lithosphere slightly soft.

Explanation:

The Earth's lithosphere is broken into many small and large slabs of rock that are known as tectonic plates.

Earth is divided into four parts :

Lithosphere is the rigid and rocky outer portion of earth's surface. It consists of crust and upper mantle.

Asthenosphere is mostly found in the uppermost mantle of earth. It is weak in nature. Hot molten magma comes out from here.

Our earth is broken into 7 major and some minor plates.

7 Major Plates are :

Minor Plates are :

Hence, our lithosphere is divided into many small and large slabs of rock, and they are known as tectonic plates.

To get more information about Tectonic plates :

https://brainly.com/question/16944828

#SPJ2

Answer:

The refraction of light at the surface of water makes ponds and swimming pools appear shallower than they really are. A 1m deep pond would only appear to be 0.75 m deep when viewed from directly above. When light emerges from glass or water into air it speeds up again.

Explanation:

Answer:

The property of light is the refraction of light because when light travels from a denser medium to rarer medium it bends away from the normal. The apparent depth of water is always less than the real depth of the water. Hence, water appears to be shallower than the real depth.

Potential energy of a particle is directly proportional its position, thus, potential energy of particle increases with increase in the height of the particle and decreases with a decrease in the height of the particle.

The potential energy of a particle is the energy possessed by the particle by virtue of its position. This potential energy is form of mechanical energy and it is expressed mathematically as the product of the mass of the particle, acceleration due to gravity and the particles displacement or position.

P.E = mgh

where;

P.E is the potential energy of the particle

m is the mass of the particle

g is the acceleration due to gravity

h is the position of the particle.

Potential energy of a particle is directly proportional its position, thus, potential energy of particle increases with increase in the height of the particle and decreases with a decrease in the height of the particle.

Learn more here: https://brainly.com/question/18160141

The total distance is 105 kilometers and the total displacement is 15 kilometers east. Option C

To calculate the total distance, we add the distances traveled in each leg of the journey: 60 kilometers (from A to B) + 45 kilometers (from B back to A) = 105 kilometers.

However, displacement refers to the change in position of an object in a straight line from its starting point to its ending point. In this case, since the boat starts and ends at the same point (A), the total displacement is zero.

Hence The total distance is 105 kilometers and the total displacement is 15 kilometers east.

Read mroe on total distance here https://brainly.com/question/29409777

#SPJ1

Physical activity can be a great way to connect with others and encounter a wide range of diversity in terms of age, gender, ethnicity, culture, and physical abilities.

Physical activity is an excellent way to bring people from different backgrounds together, and it can be a great opportunity to celebrate diversity. I have heard stories of people who have participated in physical activities such as team sports, yoga classes, or running groups and have encountered a wide range of diversity in terms of age, gender, ethnicity, culture, and physical abilities.

For example, in team sports such as soccer or basketball, players may come from different cultural backgrounds and speak different languages. This diversity can create challenges in communication, but it can also provide an opportunity for players to learn about each other's cultures and develop a sense of community.

In yoga classes, participants may come from different age groups, genders, and physical abilities. The instructor may offer modifications to poses to accommodate participants with different needs, creating an inclusive and welcoming environment.

In running groups or races, participants may come from all walks of life and have different reasons for running. Some may be running for fitness, while others may be running to raise awareness for a cause or to honor a loved one. This diversity can create a supportive and motivating atmosphere, where runners can encourage each other and celebrate their achievements.

Therefore, physical activity can be a great way to connect with others, learn about different cultures and backgrounds, and celebrate diversity.

To learn more about  physical fitness and exercise click:

https://brainly.com/question/2178829

#SPJ3

Answer:

Explanation:

Evolution is both a fact and a theory. Evolution is widely observable in laboratory and natural populations as they change over time. The fact that we need annual flu vaccines is one example of observable evolution. At the same time, evolutionary theory explains more than observations, as the succession on the fossil record. Hence, evolution is also the scientific theory that embodies biology, including all organisms and their characteristics. In this paper, we emphasize why evolution is the most important theory in biology. Evolution explains every biological detail, similar to how history explains many aspects of a current political situation. Only evolution explains the patterns observed in the fossil record. Examples include the succession in the fossil record; we cannot find the easily fossilized mammals before 300 million years ago; after the extinction of the dinosaurs, the fossil record indicates that mammals and birds radiated throughout the planet. Additionally, the fact that we are able to construct fairly consistent phylogenetic trees using distinct genetic markers in the genome is only explained by evolutionary theory. Finally, we show that the processes that drive evolution, both on short and long time scales, are observable facts.

The evolutionary theory is a scientific theory because its assumptions are well sustained by scientific data.

In conclusion, the evolutionary theory is a scientific theory because its assumptions are well sustained by scientific data.

Learn more in:

https://brainly.com/question/11555274

The ball is briefly at rest and has zero acceleration at the lowest point of its arc. When the ball is at its lowest position, there is 8330 N of tension in the cable.

There won't be any tension and weight will act downward and centrifugal force upward at the highest position. (as stated). As a result, the tension is 6 mg at the lower point and zero at the higher point.

Is the tension in the string higher, lower, or equal to the weight of the ball at its lowest point? The weight of the ball is outweighed by the strain in the string.

To know more about tension visit:-

https://brainly.com/question/11348644

#SPJ1

Answer:

Explanation:

Three forces are in equilibrium .

Let us represent forces in vector form ie in the form of i and j .

F₁ is acting along positive x axis ( at a 0° angle )

F₁ = 12 i

F₂ is acting along positive y axis ( at a 90° direction)

F₂ = 18 j

Suppose F₃ is represented by X i + Y j

Total of three forces is zero .

F₁ + F₂ + F₃ = 0

12 i + 18 j + F₃ = 0

F₃ = - 12i - 18 j

So x - component of F₃ = - 12 i

X - component of F₃ is equal to 12 N in magnitude and is acting in negative x direction ie at 180° direction .

similarly y - component is 18 N acting in negative y direction.

Answer:

x-component: -12

y-component- -18

Explanation:

Answer:

\(36.44\ \text{kg m/s}\hat{i}\)

Explanation:

I = Moment of inertia of sphere = \(\dfrac{2}{5}MR^2\)

M = Mass of sphere = 29 kg

R = Radius of sphere = 0.5 m

T = Time taken for one revolution = 0.5 s

\(\omega\) = Angular velocity = \(\dfrac{2\pi}{T}\)

\(L=I\omega\\\Rightarrow L=\dfrac{2}{5}MR^2\dfrac{2\pi}{T}\\\Rightarrow L=\dfrac{4MR^2\pi}{5T}\\\Rightarrow L=\dfrac{4\times 29\times 0.5^2\pi}{5\times 0.5}\\\Rightarrow L=36.44\ \text{kg m/s}\)

The rotational angular momentum of the sphere is \(36.44\ \text{kg m/s}\hat{i}\).