the shearing motion of surface seismic waves make them more destructive than body seismic waves(primary secondary0 true or false

Answer:

Scientific theories allow scientists to make predictions.

An eclipse is an event in which the sun or moon is blocked from view due to the presence of another celestial body, whereas lunar phases are caused by the reflection of the sunlight.

An eclipse is an astronomical phenomenon where one celestial body (e.g., sun, moon) cannot be observed because another is interposed between the Earth and the first one.

Eclipses can be divided into moon eclipses (we cannot see the moon) and sun eclipses (we cannot see the sun).

On the other hand, moon phases occur due to how sunlight reflects the near side of the Moon.  

Moon phases can be divided into:

In conclusion, an eclipse is an event in which the sun or moon is blocked from view due to the presence of another celestial body, whereas lunar phases are caused by the reflection of the sunlight.

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Answer: the other person explained it all

Explanation:

Answer:

51 km/hr

Explanation:

car:  KE = 1/2mv² = 1/2(1000 kg)(15 km/hr)² = 112500

truck:  KE = 23(112500) = 2587500

KE = 1/2mv²  →   v² = 2(KE)/m  →   v = √2(KE)/m

v = √2(2587500)/(2000 kg) = 50.9 ≈ 51 km/hr

Answer:

Friction braking is the most commonly used braking method in modern vehicles. It involves the conversion of kinetic energy to thermal energy by applying friction to the moving parts of a system. The friction force resists motion and in turn generates heat, eventually bringing the velocity to zero.

The speed of the ball when it left his foot is 11.13 m/s.

A projectile is an object that is launched or projected into the air and is only subject to the acceleration of gravity. Projectile and trajectory both refer to the same thing: an object.

The given parameters;

distance of the goal, d = 26 m

angle of projection of the ball, =  26°

height of the cross bar, H = 2.4 m

The speed of the projectile will be calculated by applying the formula for maximum height reached by a projectile;

\(H=U^{2} sin^{2}/2g\)

\(u^{2} =2gh/x=sin^{2}\)

\(u^{2} =2*9.8*2.4/sin^{2} 26\)

\(u^{2} =81.10\) m/s

u=9 m/s

Thus, the speed of the ball when it left his foot is 9 m/s.

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The best unit to be used for these examples are;

The best unit to be used for the mass of a car would be kilograms (kg) since it is the standard unit for measuring mass within the Universal Framework of Units (SI).

The best unitto be used for the time it takes to induce to lesson would be minutes (min) or seconds (s), depending on the required level of accuracy. Both minutes and seconds are commonly used units for measuring time.

Thebest unit to be used for the speed constrain in a school zone would be kilometers per hour (km/h) or miles per hour (mph), depending on the region's preferred unit of estimation for speed.

The best unit to be used for the length of the corridor would be meters (m) or feet (ft), depending on the favored unit of estimation within the setting or locale. Both meters and feet are commonly used units for measuring length.

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Answer:

So long it's a "hazard" by literal definition, there is a high chance of harm once it touches or interacts with a being.

The effective resistance of the Parallel circuit is 3 ohms.

option B.

In a parallel circuit, the sum of the currents through each path is equal to the total current that flows from the source.

The total resistance or effective resistance in a Parallel circuit with the following formula:

1/Rt = 1/R1 + 1/R2

where;

1/Rt = 1/4 + 1/12

1/Rt = (3 + 1 ) / 12

Rt = ( 12 ) / ( 4 )

Rt = 3 ohms

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Answer:

W = 600 N

Explanation:

The mechanical advantage of any machine is the ratio of the load or weight to the effort applied. Hence, the general formula for mechanical advantage is as follows:

M.A = W/P

where,

M.A =Mechanical Advantage of Hammer = 10

W = Maximum force that could be generated = ?

P = Force created by me = 60 N

Therefore,

10 = W/60 N

W = 10*60 N

W = 600 N

The resistance of the tungsten wire filament inside an Edison light bulb increases when the electric potential is increased from 0.4 volts to 2.0 volts.

This is because the increased voltage causes an increase in the temperature of the filament, which in turn increases its resistance. This increase in resistance is what causes the filament to glow and emit light, as it becomes hot enough to produce visible radiation. As the voltage is increased further, the resistance continues to increase, eventually leading to the failure of the filament and the bulb burning out.

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The acceleration of the 1.50-kg mass, acted upon by a force of 16.0 N applied at an angle of 60° above the horizontal, is approximately 7.57 m/s², directed at an angle of 30° above the horizontal.

To determine the acceleration of the mass, we can use Newton's second law of motion:

F = m * a

In this case, the mass is given as 1.50 kg, and the force is 16.0 N, applied at an angle of 60° above the horizontal.

We can use trigonometry to determine the force's horizontal and vertical components:

Horizontal component: Fx = F * cosθ

Vertical component: Fy = F * sinθ

where θ is the angle above the horizontal (60°).

Calculating the components:

Fx = 16.0 N * cos(60°)

= 8.00 N

Fy = 16.0 N * sin(60°)

= 13.86 N

The horizontal component of the force does not contribute to the acceleration because it is perpendicular to the motion. The vertical component of the force is responsible for the acceleration.

Using the vertical component of the force, we can now calculate the acceleration:

Fy = m * a

13.86 N = 1.50 kg * a

a = 13.86 N / 1.50 kg

a ≈ 9.24 m/s²

However, the above calculation provides the magnitude of the acceleration. To determine the direction, we need to find the angle above the horizontal at which the acceleration is directed.

By using the inverse tangent function, we can find the angle above the horizontal:

θ = arctan(a_horizontal / a_vertical)

θ = arctan(Fx / Fy)

θ = arctan(8.00 N / 13.86 N)

θ ≈ 30°

Therefore, the acceleration of the mass is approximately 7.57 m/s², directed at an angle of 30° above the horizontal.

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The resulting magnitude of the frictional force on the box by the surface is 7.00 N.

The calculation for the resulting magnitude of the frictional force on the box by the surface is as follows:

Frictional force = Applied force

Frictional force = 7.00 N

When the monkey applies a horizontal force of 7.00 N to the box, the box experiences an opposing frictional force from the surface. According to Newton's third law of motion, the magnitude of the frictional force is equal to the applied force in this case. Therefore, the resulting magnitude of the frictional force on the box by the surface is 7.00 N.

The frictional force arises due to the interaction between the surfaces in contact. It acts parallel to the surface and opposes the motion or attempted motion between the two surfaces. Since the box is initially at rest, the applied force of 7.00 N initiates motion and is balanced by an equal and opposite frictional force. The magnitude of the frictional force matches the applied force, resulting in a net force of zero and the box remains at rest.

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Explanation:

Weight (N) = Mass * Acceleration

75.74 kg = Mass * 9.8 m/sec^2

Mass = 7.72 kg

Weight = 75.74 N

Considering the change of units and the definition of weightm the weight is 742.8494 N and the mass is 75.80kg

On one side, 1 lb equals 4.4482 Newtons. So, to determine the weight in Newtons you can apply the following rule of three: if 1 lb equals 4.4482 Newtons, 167 lb equals what amount in Newtons?

\(weight=\frac{167 lbx 4.4482 Newtons}{1 lb}\)

weight= 742.8494 N

On the other side, mass is the amount of matter that a body contains and weight is the action exerted by the force of gravity on the body.

The mass of an object will always be the same, no matter where it is located. Instead, the weight of the object will vary according to the force of gravity acting on it.

Weight is calculated as the product of the object's mass and the value of the gravitational acceleration:

W= m×g

In this case, you know:

Then:

742.8494 N= m× 9.8 m/s²

Solving:

m=742.8494 N÷ 9.8 m/s²

m= 75.80 kg

Finally, the weight is 742.8494 N and the mass is 75.80kg

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Neptune's Diameter is 1632km.

Neptune's diameter when you observe it as it occults a background star when the relative velocity between Neptune and the Earth is 30 km/s and the star crosses through the middle of the planet and disappears for 27.6 minutes can be calculated as follows:

To solve this question, you can use the formula

d = 2vsT,

where d is the diameter of Neptune, v is the relative velocity of 30 km/s, and T is the time it takes for the star to disappear, which is 27.6 minutes.

Therefore, Neptune's diameter d = 2*30*27.6 = 1632 km.

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Answer:

It is not possible to provide a qualitative comparison between objects a and b without knowing the specific quantities being compared.

To make a qualitative comparison, we need to know the specific attributes or characteristics being compared. Without this information, we cannot determine which object has a greater value. For example, if the quantities being compared are size, weight, or temperature, we would need the specific values for a and b to make a comparison.

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Answer:

hhuuufuhrhuuuryheu7uhhehfu

Answer:

Explanation

The most famous and common example is Christmas tree lights. You can't tell easily by looking at them whether they are in series or parallel. But you sure know the difference when one of them burns out. When that happens, the whole string goes dead. No matter what you do (other than find out which bulb burned out) will not fix the problem.

Another example is anything that is temperature controlled. For example a furnace is controlled by a thermostat. When the room temperature reaches a certain point, the thermostat is constructed in a certain way so that it forms an open circuit and no current can flow through it. The furnace motor turns off and the furnace stops pumping hot air into a room.

The light is brighter in a battery-powered torch, you should change the wattage or power rating of the bulb. A higher-wattage bulb will produce more light and therefore be brighter. When selecting a new bulb for the torch, make sure to choose a bulb with a higher wattage rating than the current bulb.

A battery is an electrochemical device that converts chemical energy into electrical energy through a chemical reaction. It consists of one or more electrochemical cells, each of which contains a positive electrode (cathode), a negative electrode (anode), and an electrolyte that allows ions to move between the two electrodes.

During the discharge process, a chemical reaction takes place within the battery that causes electrons to flow from the negative electrode through an external circuit to the positive electrode, generating an electrical current. This current can then be used to power a wide range of electrical devices, such as flashlights, smartphones, and cars. The chemical reaction can be reversed by recharging the battery, which involves applying an external electrical current to the electrodes to force the reaction to occur in the opposite direction.

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Answer:To calculate the required values, we can use the formula for density: density = mass/volume.

i) Volume of water that fills the density bottle = mass of water/density of water

Mass of water = Mass of density bottle filled with water - Mass of empty density bottle = 53.2g - 13.2g = 40g

Density of water = 1g/cm³ (at room temperature and pressure)

Volume of water = 40g/1g/cm³ = 40cm³

ii) Capacity of the density bottle = Volume of water + Volume of lead shots

Volume of water = 40cm³ (calculated above)

Volume of lead shots = Volume of density bottle filled up with lead shots and water - Volume of water

Volume of density bottle filled up with lead shots and water = Mass of density bottle with lead shots filled up with water - Mass of empty density bottle

= 166.1g - 13.2g = 152.9g

Volume of lead shots and water = Volume of density bottle filled up with lead shots and water - Volume of water

Volume of lead shots and water = 152.9cm³ - 40cm³ = 112.9cm³

Assuming that the volume of water in the partially filled density bottle is negligible, we can take the volume of lead shots to be equal to the volume of the partially filled density bottle.

Capacity of the density bottle = Volume of water + Volume of lead shots = 40cm³ + 112.9cm³ = 152.9cm³

iii) Mass of lead shots = Mass of density bottle with lead shots filled up with water - Mass of density bottle filled with water

= 166.1g - 53.2g = 112.9g

iv) Volume of lead shots = Mass of lead shots/density of lead

Density of lead = 11.34 g/cm³ (at room temperature and pressure)

Volume of lead shots = 112.9g/11.34 g/cm³ = 9.96 cm³ (approximately)

v) Density of lead = Mass of lead shots/Volume of lead shots

Density of lead = 112.9g/9.96cm³ = 11.32 g/cm³ (approximately)

Therefore, the required values are:

iii) Mass of lead shots = 112.9g

iv) Volume of lead shots = 9.96cm³ (approximately)

v) Density of lead = 11.32 g/cm³ (approximately)

Explanation:

it slows down. When light enters water, it slows down due to the increased density of the water compared to the air. This slowing down causes the light to bend, which is why objects in water appear distorted.

Speed is a rate of motion, or the rate of change in position of an object. It is usually measured in units of distance per unit of time, such as miles per hour or meters per second. Speed can also be thought of as the magnitude of velocity, which is the rate and direction of motion. Speed is an important factor when it comes to transportation and movement of objects, and it can be used to calculate other important measurements such as acceleration and momentum.

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Answer:

15 kg

Explanation:

mass=force÷acceleration

force: 75N

acceleration: 5 m/s^2

mass = 75 / 5

= 15 kg

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The basketball should be thrown to a height of 8m

The mass of the ball, m = 2kg

Potential Energy = 160J

The formula for Potential Energy is:

Potential Energy = mgh

where g = 10m/s²

To find the height, h, substitute Potential Energy = 160J, m = 2kg, and g = 10m/s² into the given formula:

160 = 2 x 10 x h

160 = 20h

h = 160/20

h = 8m

The basketball should be thrown to a height of 8m

(a) The gravitational force is 980 N

(b) The tension in the string is 441.49 N

Given : Mass of the ball = 100 gram

Length of the string = 1.07 m

the acceleration = 9.8 \(m/s^2\)

(a) The gravitational force ;

W = mg

this implies W = (100)( 9.8)

W = 980 N

thus the gravitational force is 980 N

(b) The tension can be calculated by adding the gravitational force and equating it to the mv^2/r

W + T = \(\frac{mv^2}{r}\)

W + T = \(\frac{100 X 3.9^2}{1.07}\)

980 + T = 1421.49

T = 1421.49 - 980

this implies T = 441.49 N

thus tension = 441.49 N

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The mass of the blood denoted is 501.6 g.

The mass of the blood denoted by Keona is calculated by applying the formula for density of a liquid as shown below.

density = mass/volume

mass = density x volume

The given parameters include;

The mass of the blood is calculated as follows;

mass = 1.06 g/mL x 473.176 mL

mass = 501.6 g

Thus, the mass of the blood is calculated from the formula of density.

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The complete question is below

While participating in a blood drive at school, Keona learns that blood has a density of 1.06 g/mL. She donates one pint of blood, which is equal to 473.176 mL. find the mass of the blood denoted.

Answer:

C.

The density of ice is less than the density of water.

The ice float on water because the density of ice is less than the density of water.

The density of a material describes how dense it is in a given area. A substance's density is determined by its mass per unit volume. Density is essentially a measure of how tightly something is packed.

It is a particular physical quality of a specific thing. Discovering the density principle was done by the Greek scientist Archimedes. If you are familiar with the formula and the required units, calculating density is simple. Alternatively to the symbol, the letter D can be used to denote density.

ρ=m/v where,

ρ is the density,

m= mass of object and,

v is the volume of the object.

Hence, the density of ice is 917 kg/m³, which is less than the density of water which is 997.7 kg/m³ and due to this reason the ice floats on water.

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The statement that correctly describes the solar neutrino problem is: a. Detectors were only looking for one kind of neutrino and were not sensitive to other types of neutrinos.

What is Neutrinos?

Neutrinos are subatomic particles that belong to the family of leptons, which also includes electrons. They have no electric charge, very little mass, and interact only weakly with other matter, making them very difficult to detect. Neutrinos are produced by nuclear reactions in the Sun, as well as in supernovae, cosmic rays, and particle accelerators.

The solar neutrino problem refers to a discrepancy between the number of neutrinos predicted by theoretical models of the Sun's nuclear reactions and the number of neutrinos actually detected by experiments on Earth. The early neutrino detectors were designed to detect electron neutrinos, which are the type of neutrinos produced by the Sun's fusion reactions.

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Yes, conductivity can be used to detect molecular impurities in water.

Conductivity is the measure of a material's ability to conduct electric current. When there are impurities in water, they can alter its conductivity. Therefore, if the conductivity of water is higher than expected, it could indicate the presence of molecular impurities. However, it is important to note that conductivity alone cannot identify the type of impurities present, only their presence.

Molecular impurities in water refer to any substance that is not water molecules, such as dissolved salts, minerals, organic compounds, sodium chloride, calcium carbonate, magnesium sulfate, and other gases. The interesting thing about molecular impurities is kind of they such as dissolved salts, metals, or other charged particles, can increase the conductivity of water because they increase the number of ions that can carry electrical charges. Examples of molecular impurities include chlorine, fluoride, nitrate, and sulfate ions.

In summary, by measuring the conductivity of water, we can identify the presence of molecular impurities and assess the overall water quality.

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Answer:

this ans is 42.85

Explanation:

i dont not explain but i hipe you get it