what is the relationship between the velocity of a spinning object squared and the radius of revolutionj

Answer:

•Walking briskly

• Running /jogging

•Dancing

•biking

The angle of the reflected ray will be 61 degrees. The angle of incidence and the angle of reflection are always equal when a ray of light is incident on a mirror.

When a ray of light is incident on a mirror, it gets reflected at an angle equal to the angle of incidence. In this case, the angle of incidence is 61 degrees. So, the angle of the reflected ray will also be 61 degrees.
To understand this better, we need to look at the laws of reflection. According to these laws, the incident ray, the reflected ray, and the normal to the mirror surface at the point of incidence all lie in the same plane. The angle of incidence is the angle between the incident ray and the normal, while the angle of reflection is the angle between the reflected ray and the normal.
When the incident ray strikes the mirror surface at an angle of 61 degrees, it forms an angle of 61 degrees with the normal. As per the laws of reflection, the reflected ray will also form an angle of 61 degrees with the normal. This means that the angle of reflection is also 61 degrees.
So, the answer to the question is that the angle of the reflected ray will be 61 degrees. This is because the angle of incidence and the angle of reflection are always equal when a ray of light is incident on a mirror.

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The velocity of the basketball rolling off a 1.20 m high desk and strikes the floor 0.55 m away from the base of the desk is 1.22 m/s.

What is projectile motion?

The path followed by a projectile is known as projectile motion, when we throw any object in the air it follows a certain trajectile and that trajectory is known as projectile motion.

What is the time of flight?

Every projectile remains in the air for a certain period of time the amount of time the projectile space in the air is known as time of flight for the same velocity with different angles the time of flight can vary.

given:

height of the table = 1.20 meters

range of the projectile = 0.55 meters

first, we need to determine the time of flight of the projectile using the height of the table.

the time of flight for both the motion i.e., in x axis and y axis will be same.

using newtons second law of motion we get,

s = u × t + 0.5 × a × t²

where,

s is displacement in y axis

u is the initial velocity of the basketball

t is the time of flight

a is the acceleration due to gravity

substituting value in newtons second law of motion we get,

1.20 = 0 + 0.5 × 10 × t²

t² = 0.24

t = 0.49 seconds

now we will use this to find the velocity of the basketball using time distance relationship,

distance = speed × time

0.55 = velocity of the basketball × 0.49

velocity of the basketball = 1.22 m/s

therefore, the velocity of the basketball rolling off a 1.20 m high desk and strikes the floor 0.55 m away from the base of the desk is 1.22 m/s.

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Answer:

Explanation:

For free body diagram see attached sheet .

W is weight of steel girder acting at the middle point of its length . T is tension in the cable .

OB = √ ( 12² - 2² )

= 11.83 m .

OC = 11.83 / 2 = 5.915 m

Taking moment of tension T and weight W about point O

W x OC = T x OB

22 x 5.915 = T x 11.83

T = 22 x 5.915 / 11.83

= 11 kN

Considering forces acting in vertical direction and equating forces in opposite direction

T + R = W

R = W - T

= 22 - 11 = 11 KN

So force of grinder on the ground = R

= 11 KN.

Answer:

(a) The kinetic energy of a 1.10 g particle with a speed of 0.800 c can be calculated using the equation KE = (1/2)mv^2, where m is the mass of the particle and v is its velocity. In this case, the mass of the particle is 1.10 g and the velocity is 0.800 c, so the kinetic energy would be:

KE = (1/2) * (1.10 * 10^-3 kg) * (0.800 * 3 * 10^8 m/s)^2

(b) The rest energy of a particle is the energy it has when it is at rest. According to the equation E=mc^2, where E is the energy, m is the mass, and c is the speed of light. In this case, the rest energy would be:

E = (1.10 * 10^-3 kg) * (3 * 10^8 m/s)^2

(c) The total energy of a particle is the sum of its kinetic energy and rest energy. Thus,

Total energy= kinetic energy + rest energy

The superposition of the waves y1 + y2 is 2.11 cm at x = 2.0 cm and t = 0.0 s for the wave functions.

The state of a quantum system is represented by wave functions, which are essential mathematical representations used in quantum mechanics. They include information about the probability distribution of finding a particle or system in various states or locations, and are typically represented by the Greek symbol psi.

The probability density of coming across the particle in a particular state is represented by the square of the wave function, |||2, or |||2. Complex wave functions may have wave-like characteristics including interference and superposition. They are essential for forecasting quantum system behaviour and characteristics, such as the energy levels, momentum, and spin of the constituent particles. Understanding the wave-particle duality and the probabilistic character of quantum physics depends heavily on wave functions.

The superposition of the waves y1 + y2y1+y2 is:y1 + y2 = \(2.43 cos(3.22x - 1.43t) + 4.16 sin(3.80x - 2.46t)\)

Given that x = 2.0 and t = 0.0 s:

So, \(y1 + y2 = 2.43 cos(3.22 × 2.0 - 1.43 × 0.0) + 4.16 sin(3.80 × 2.0 - 2.46 × 0.0)y1 + y2 = 2.43 cos(6.44) + 4.16 sin(7.60)y1 + y2\) = 2.43 × (-0.81) + 4.16 × 0.98y1 + y2 = -1.96 + 4.07

So, the superposition of the waves y1 + y2 is 2.11 cm at x = 2.0 cm and t = 0.0 s.

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At the top of the loop, the direction of the force exerted on a 55 kg rider by the roller-coaster seat is downward.

A roller coaster is a theme park ride where passengers travel in cars attached to a track, typically in the form of a roller coaster's archetypal loop-the-loop.The roller coaster is an example of a system that obeys the laws of physics. Inertia, gravity, and energy are the three key principles involved in roller coaster physics. Gravity is the most important force at work on a roller coaster.

At the top of the loop, the direction of the force exerted on a 55 kg rider by the roller-coaster seat is downward. This is due to the centripetal force that acts on the rider and causes them to travel in a circle. At the top of the loop, the force of gravity is pulling the rider downwards, while the centripetal force provided by the seat is pushing them upwards and inwards towards the center of the loop.

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question 2 is radient energy and electrical energy

dorry my last awnser got deleted

Answer:120700.8

Explanation:

The net force on the person would be -5,263.65N downwards when the average electric field near the surface of the earth is 150N/C downward.

The net force on a person struck by lightning and carrying the full -40C can be calculated using the formula F = qE + mg, where F is the net force, q is the charge, E is the electric field, m is the mass, and g is the acceleration due to gravity.
Given that the electric field near the surface of the earth is 150N/C downward, and the charge transferred during a typical lightning strike is -40C, the electric force acting on the person would be -40C x 150N/C = -6,000N downwards.
The gravitational force acting on the person can be calculated as mg = 75kg x \(9.81m/s^2\) = 736.35N downwards.
Therefore, the net force on the person would be -6,000N + 736.35N = -5,263.65N downwards.
Since the question asks for the net upward force, we need to take the absolute value of the net force, which is 5,263.65N. Therefore, the answer is 5,263.65N upwards.

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The current density in a cylindrical wire can be calculated using the formula J = I/A, where I is the current and A is the cross-sectional area of the wire. Given a current of 2.4 A and a wire diameter of 2.0 mm, the average current density in the wire is approximately 3.05 x 10⁶ A/m².

We can use the formula for current density, which is given by J = I/A, where J is the current density, I is the current, and A is the cross-sectional area of the wire. The cross-sectional area of a cylindrical wire is given by A = πr², where r is the radius of the wire.

Given that the current I is 2.4 A and the diameter of the wire is 2.0 mm, we can find the radius as r = d/2 = 1.0 mm = 0.001 m.

Using the formula for the area of a circle, A = πr², we get A = π(0.001 m)² = 7.854 x 10⁻⁷ m².

Substituting the values into the formula for current density, we get:

J = I/A = 2.4 A / 7.854 x 10⁻⁷ m² = 3.05 x 10⁶ A/m²

Therefore, the average current density in the wire is 3.05 x 10⁶ A/m², which is closest to option (a) 3.6.

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\(\huge{ \mathfrak{ \underline{ Answer \: \: ✓ }}}\)

Which of the following is not an example of an abiotic component of an ecosystem :

A . water

B . minerals

C . sunlight

D . bacteria ✓

E . air

Bacteria is a single celled living organism.

\( \#TeeNForeveR\)

D. bacteria is not an example of an abiotic component of an ecosystem.

An ecosystem is a community of living organisms (biotic) interacting with each other and with their non-living (abiotic) environment in a specific area. It encompasses all the living and non-living components of a particular environment and the complex interactions among them.

Here,
Abiotic components are the non-living factors that influence the distribution and abundance of living organisms in an ecosystem. Examples of abiotic components include water, minerals, sunlight, air, and temperature. Bacteria, on the other hand, are living organisms and are considered as biotic components of an ecosystem.

Thus, D. bacteria is not an example of an abiotic component of an ecosystem.

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Answer: The Energy Change

Explanation: change for a chemical reaction can either be exothermic if it gives off heat or endothermic if it requires heat to proceed.  in a chemical reaction is due to the difference in the amounts of stored chemical energy between the products and the reactants. This stored chemical energy, or heat content, of the system is known as its enthalpy. energy changes that occur during a chemical reaction can be shown in a diagram called a potential energy diagram, or sometimes called a reaction progress curve. A potential energy diagram shows the change in potential energy of a system as reactants are converted into products.

(a) Therefore, the angle between vectors d→i and d→f is 25.9°. (B) The work done on the object by the force in the 5.10 s interval is 32 J. (d) The average power due to the force during that interval is 6.27 W. The angle between vectors d→i and d→f is 25.9°.

Given:

Force, F = (5.00 N)i + (4.00 N)j,

d→i = (4.00 m)i + (3.00 m)j, and

d→f = (7.00 m)i + (5.00 m)j, and

time interval, t = 5.10 s(a)

Work done on the object by the force in the 5.10 s interval is given by the dot product of force and displacement of the object.

The formula is

W = F . d where, F is the force acting on the object and d is the displacement of the object

In vector form W = F .

d= |F||d|

cos θ= Fxi dx + Fy dy

= (5.00 N) (3.00 m) + (4.00 N) (4.00 m)

= 32 J

Therefore, the work done on the object by the force in the 5.10 s interval is 32 J

(b) The average power due to the force during that interval is given by the formula

Pavg = W / twhere, W is the work done on the object and t is the time interval

In the above section, we have found the work done on the object by the force is 32 J.

Therefore,

Pavg = W / t

= 32 / 5.10

= 6.27 W

Therefore, the average power due to the force during that interval is 6.27 W

(c) The angle between vectors d→i and d→f is given by

θ = cos-1 [ (d→i . d→f) / (|d→i||d→f|) ]

In the given problem,d→i = (4.00 m)i + (3.00 m)j and d→f = (7.00 m)i + (5.00 m)j

Therefore,d→i .

d→f = (4.00 m) (7.00 m) + (3.00 m) (5.00 m)

= 43.00 m2|d→i|

= √((4.00 m)2 + (3.00 m)2)

= 5.00 m|d→f|

= √((7.00 m)2 + (5.00 m)2)

= 8.60 m

Therefore,θ = cos-1 [ (d→i . d→f) / (|d→i||d→f|) ]

= cos-1 [ (43.00 m2) / (5.00 m × 8.60 m) ]

= 25.9°

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The analogous two-sided test's p-value would be Option D) 0.08

The term "blood alcohol content," or "BAC," refers to a routine test that determines how inebriated a person may be. Different blood alcohol concentrations cause varying degrees of risks and alterations to the body and mind. The legal limit in the US is 0.08 percent blood alcohol content p-value .

On the basis of the individual factors like gender, weight, prospective prescribed drugs, and age, one to two drinks raise the blood alcohol content (BAC) to a minor extent, that is, from 0.01 percent to 0.05 percent. Yet, two to three drinks increase blood alcohol content (BAC) by 0.06 to 0.1 percent. At this moment, perception, judgment, reaction time, memory, and fine motor skills are all impacted.

Unsuitable social behaviour, slurred speech, loss of balance, low body temperature, blackouts, vomiting, and breathing difficulties might occur when BAC levels are higher. So, if a person over the age of 21 has a blood alcohol content (BAC) of 0.08 percent or higher, they may be arrested for DUI (driving under the influence).

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Answer:

B. people with OCD know their disorder is irrational

Explanation:

Got it right

Answer:

B

Explanation:

Edge2021

Answer:

A flood could hit Tokyo so quickly that the levee could break. In a short amount of time, this breach, or break, could cause severe damage to Tokyo’s infrastructure, like a flood in a Hollywood disaster movie. Because Tokyo is home to a large population, a flood could cause massive damage to homes, businesses, and life.Explanation:

Answer:

yes they are. they are one of only 4 metals that are ferromagnetic.

Answer:

79%

Explanation:

The following data were obtained from the question:

Input temperature = 100°C

Output temperature = 22°C

Efficiency =.?

Next, we shall convert the temperature from celsius to Kelvin temperature. This is illustrated below:

T (K) = T (°C) + 273

Input temperature = 100°C

Input temperature = 100°C + 273 = 373K

Output temperature = 22°C

Output temperature = 22°C + 273 = 295K

The efficiency of the locomotive can be obtained as follow:

Input temperature = 373K

Output temperature = 295K

Efficiency =.?

Efficiency = output /input x 100

Efficiency = 295/373 x 100

Efficiency = 79%

Therefore, the efficiency of the locomotive is 79%.

The block rests at a distance of 0.075 m from the top of the incline in equilibrium. The period of oscillations of the block when it is displaced slightly down the incline is 0.77 seconds.

To find how far from the top of the incline the block rests in equilibrium, we need to balance the weight of the block with the force from the spring. At equilibrium, the spring force must be equal and opposite to the weight of the block.

The weight of the block is given as 14 N, which we can resolve into its components parallel and perpendicular to the incline.

Weight perpendicular to the incline = 14 N * cos(40°) = 10.7 N

Weight parallel to the incline = 14 N * sin(40°) = 8.98 N

The force from the spring is given by Hooke's law:

F = -kx

where F is the force from the spring, k is the spring constant, and x is the displacement from the equilibrium position.

At equilibrium, the displacement from the unstretched length of the spring is zero, so the force from the spring is also zero.

Equating the weight parallel to the incline with the force from the spring, we get:

8.98 N = -kx

Substituting the given values for k and solving for x, we get:

x = -8.98 N / (-120 N/m) = 0.075 m

To find the period of oscillations of the block when it is displaced slightly down the incline, we can use the formula for the period of a mass-spring system:

T = 2π * sqrt(m/k)

where T is the period of oscillations, m is the mass of the block, and k is the spring constant.

To find the mass of the block, we can use its weight:

Weight = m * g

where g is the acceleration due to gravity.

Solving for m, we get:

m = Weight / g = 14 N / 9.81 m/s^2 = 1.43 kg

Substituting the given values for m and k, we get:

T = 2π * sqrt(1.43 kg / 120 N/m) = 0.77 s

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I think that you need the gravitational acceleration of mercury

so we will use Newton's gravitational law :

gravitational acceleration = \(\frac{G * m}{r^{2} }\)

G is the gravitational constant = G = 6.673×10^-11 N m^2 kg^-2

after substitution :

6.673×10^-11 * 3.2x10^23 / (2.43x10^6)^2

using calculator :

gravitational acceleration of mercury = 3.61625 m/s^2

pls give me brainliest

(a) The acceleration of the crate  is  1.5 m/s^2

(b) The crate’s final velocity is 9 m/s.

To move the crate with a constant velocity, the force you apply must equal the force of friction. So, to move the crate, you must push with a force of 275 N.

If you push with a force of 380 N, the net force on the crate will be;

F (net)  380 N - 275 N = 105 N.

The acceleration of the crate will be given by Newton's second law of motion:

a = F / m

where;

So, substituting in the known values, we get:

a = 105 N / 70 kg = 1.5 m/s^2

Finally, if the crate started from rest, its final velocity after 6 seconds can be found using the equation:

v = at

v = 1.5 m/s^2  x  6s = 9 m/s

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Sound travels at approximately 343 meters (or 1,125 feet) per second in dry air at room temperature.

To determine how far away lightning is when thunder sounds 10 seconds after the lightning flash, we can use the speed of sound.

Distance = Speed × Time

Distance = 343 m/s × 10 s

Distance = 3,430 meters

Therefore, if thunder sounds 10 seconds after the lightning flash, the lightning is approximately 3,430 meters (or 3.43 kilometers) away.

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Answer:

1.36 x 10^(-9) N

Explanation:

The gravitational attraction between two objects can be calculated as

Where G is a constant equal to 6.67 x 10^(-11) m³/kg·s², m1 and m2 are the masses of the objects and r is the distance between them. So, replacing the values, we get:

Therefore, the gravitational attraction between them is 1.36 x 10^(-9) N

A snow cover tends to stabilize the overlying air, thus inhibiting convection.

Snow acts as an insulator, reducing the transfer of heat between the surface and the atmosphere. When a snow cover is present, it prevents the direct contact of the air with the underlying surface, leading to a decrease in temperature gradients and a reduction in turbulent mixing. This stabilization of the air inhibits convection, which is the vertical movement of air masses due to temperature differences.

The presence of a snow cover creates a stable atmospheric condition by inhibiting convection and reducing turbulent mixing. This can result in a more static and calm air mass above the snow-covered surface.

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-An increase in human population negatively impacts the water resources. There is only a small amount of clean and drinkable water on Earth. If more people are on Earth, more of this water will be used by the population. An increase of people also means that more fossil fuel will be used. An increase of usage of fossil fuel, means that the climate will become warmer & melt the ice caps. Ice caps are pure,drinkable water, and if they melt they will mix with salt water, making it undrinkable to human.

-The industrial usage of water, leads to more water being polluted. Hyrdaulic Fracturing on water will negatively affect water,making it undrinkable,due to the fact that it is filled with things that have negative affects on our body. Infected waters will lead to a smaller amount of water for people to drink.

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The actual force on the squid is half of this, or 90 N.

Propulsion is the force which moves a vehicle or object forward. It can be generated through the reaction of a rocket engine, the thrust of a jet engine, the push of a propeller, or the thrust of an electric motor. Propulsion systems are generally designed for specific types of vehicles, such as cars, boats, planes, or spacecraft. The system typically consists of a power source, a mechanism for converting the power into a propulsive force, and a means of controlling the direction of the force. Propulsion can also be provided by the force of gravity, such as when a body moves downhill or when a rocket is launched into space. In any case, the goal of propulsion is to generate a force which will move the vehicle in the desired direction.

The average force on the squid during the propulsion can be calculated using the equation F = ma,
Where m is the mass of the squid and a is the acceleration.
Acceleration is calculated by dividing the change in velocity (15 m/s) by the change in time (0.15 s), giving an acceleration of 100 m/s^2.
The force is then calculated by multiplying the mass of the squid (8.0 kg) by the acceleration (100 m/s^2), giving a force of 800 N.
However, this is the total force on the squid.
Since the squid is both pushing and pulling the water,
the actual force on the squid is half of this, or 90 N.

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To calculate the Taguchi quality cost, we need to multiply the length of each piece by the Taguchi parameter T, and then sum up the costs.

Given:

Length of the first metal rod = 49.19 cm

Length of the second metal rod = 49.93 cm

a) Taguchi parameter T:

Since we don't have the specific value of T, we cannot calculate it.

b) Taguchi Quality Cost of the second metal rod:

Taguchi Quality Cost = Length of the second metal rod * Taguchi parameter T

c) Taguchi Quality Cost of the first metal rod:

Taguchi Quality Cost = Length of the first metal rod * Taguchi parameter T

d) Total Taguchi Quality Cost of the two units:

Total Taguchi Quality Cost = Taguchi Quality Cost of the first metal rod + Taguchi Quality Cost of the second metal rod

Since we don't have the Taguchi parameter T, we cannot calculate the specific values for parts (b), (c), and (d).

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Most deserts are associated with the subtropical high.

A subtropical high is a semi-permanent high-pressure system located near the Tropics of Cancer and Capricorn. This high-pressure system creates stable atmospheric conditions that inhibit the formation of clouds and precipitation. As a result, regions located under the subtropical high, known as subtropical deserts, tend to be dry and arid.

Deserts cover about one-third of the Earth's land surface, and many of them are located in subtropical regions such as the Sahara, the Arabian Desert, and the Mojave Desert. Other deserts, such as those found in polar regions, are associated with different atmospheric systems.

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Most deserts are associated with the subtropical high.

These are areas of high atmospheric pressure located around the 30th parallel north and south of the equator, where the trade winds converge and create stable, dry conditions.

The descending air masses from the subtropical high-pressure zones prevent the formation of clouds and cause the hot, dry climate associated with deserts.

However, there are also other factors that contribute to the formation of deserts, such as the rain shadow effect, which occurs when moist air is forced to rise over a mountain range and then cools and releases its moisture on the windward side, leaving the leeward side dry.

Polar deserts are also formed due to the cold temperatures and low humidity of the polar regions.

Overall, while there are different factors that can lead to the formation of deserts, the subtropical high-pressure zones are the most commonly associated with desert regions due to the stable, dry conditions created by the descending air masses.

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