Animals with _______ that benefit them, allowing them compete better for food, live longer than other animals in the same species.

If Shelley's cup of tea cools 1/2 of a degree in 10 minutes, the rate of her tea cooling down is 0.05 degrees per minute.

10 minutes = 1 / 2 degrees

1 minute = 1 / 2 / 10 degrees

1 minute = 1 / 20 degrees

1 minute = 0.05 degrees

If a value is given for x amount of a factor, to calculate for unit amount of the factor, divide the value by the value of x. Similarly, if a value is given for unit amount of a factor, to calculate for x amount of factor, multiply the value by x.

Therefore, the rate of her tea cooling down is 0.05 degrees / minute.

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Answer:

1) duration of the sessions

2) daily pattern days and ..

The average force exerted by the club on the ball is 838,400 N. Force can be characterized by its magnitude, direction, and point of application.

It can be a push or pull, and it can cause an object to start moving, stop moving, or change its direction of motion.

Force is indeed a physical factor that alters or has the potential to alter an object's state at rest or motion as well as its shape. Newton is the SI unit of force.

Finally, the average force exerted by the club on the ball is:

F = I / t = (1676.8 N·s) / (0.0020 s) = 838,400 N

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Using a set of pulleys, Diana hoists a piano weighing 1000 N. To draw in 20.0 m of rope, she applies 250 N of force. The separation is 5m.

given,

Load force = 1000 N

Effort distance = 20.0 m

Effort force=250N

If this were an ideal machine, we could calculate the force Diana applied as follows:

The equation that follows links load force to effort force for a perfect machine;

Effort force × effort distance = Load force × Load distance

When we enter the parameters into the formula, we get;

Load distance = Effort force × effort distance/Load force

                         =250×20/1000

                         = 5 m

Load distance  = 5 m

In mechanics, force is any action that tends to maintain or alter the motion of a body or distort it. The concept of force is commonly explained in terms of Isaac Newton's three laws of motion, as stated in his Principia Mathematica (1687). Newton's first principle states that a body at rest or moving at a uniform rate in a straight line will remain in that state until some force is applied to it. The second law states that when an external force acts on a body, it causes an acceleration (change in velocity) of the body in the direction of the force.

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A moon is defined as a natural satellite orbiting around a planet. It is a celestial body that orbits around a planet or a dwarf planet in our solar system. What makes a moon different from a planet is that moons do not orbit around the sun. They orbit around a planet or a dwarf planet instead.

In addition, moons are smaller than planets and do not have their own atmosphere. Moons can be rocky or icy and can be made up of different types of materials such as dust, rock, ice, and gas. They are formed through various processes such as accretion, collision, capture, and fission. Out of all the moons in our solar system, I think that the moon of our Earth is the most interesting.

The moon of the Earth is the only natural satellite of our planet. It is about one-quarter the size of the Earth and is about 238,855 miles away from the Earth. It has a rocky and dusty surface, with many craters, mountains, valleys, and seas. The moon has played an important role in the history of human civilization, serving as a source of light, a calendar, and an object of scientific study. It has been explored by humans and robots, revealing many secrets of its geology, composition, and history.

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C. Disregard a goal if you don’t achieve it

Answer: A. Disregard a goad if you don't achieve it.

Explanation:

The Explanation is if you don't achieve the goal that is not right so your job is to disregard the goal.

Answer:

129.12 ml

Explanation:

If answer is correct feel free to replay me for explanation.

The magnitude of the acceleration due to gravity on planet p is 5 meters per seconds squared.

From the Second Equation of Motion;

s = ut + (1/2)gt²

Where v is final velocity, u is initial velocity, g is acceleration due to gravity and t is time elapsed.

Given the data in the question;

Plug the given data in the above formula and solve for g.

s = ut + (1/2)gt²

40m = (0 × 4s) + ( (1/2) × g × (4s)²

40m =  (1/2) × g × 16s²

Multiply both sides by 2

2 × 40m = 2 × (1/2) × g × 16s²

80m = g × 16s²

g × 16s² = 80m

g = 80m / 16s²

g = 5m/s²

Therefore, the acceleration due to gravity is 5m/s².

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Answer:

Explanation:

Kinetic Energy formula:

KE = \(\frac{1}{2}\)mv²

m=mass

v=speed

Given:

m=0.25kg

v=2.5m/s

Plug the values in:

KE = 1/2(0.25kg)(2.5m/s)²

KE = 0.78125 J (Joules)

For a bill to reach the Senate floor, it must achieve a simple majority vote, which means at least 51 out of 100 senators must approve of it.

What is a simple majority?

A simple majority refers to the minimum number of votes necessary to pass a bill or resolution. In the Senate, a simple majority is 51 votes out of 100.

Therefore, in order for a bill to reach the Senate floor, it must achieve 51 votes or more.

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Answer:

28.28 ms-1

Explanation:

v² = u² + 2as

v² = 20² + 2× 2×100

v² = 800

v = 28.28 ms-1

Generally, the coefficient of static friction should be at least 0.7 for a car traveling at this speed, but this value could be higher depending on the specific conditions.

The coefficient of static friction, or μs, is the ratio of the maximum static force that can be applied without causing slipping to the normal force between two surfaces. The coefficient is affected by the surfaces in contact and the material they are made of.

The tires of a car also have an effect on the coefficient of static friction. Tires with a greater tread depth can provide better grip on the road and therefore have a higher coefficient of static friction than tires with a shallow tread. Tire pressure also plays a role, as low pressure can reduce the coefficient of static friction.

The weight of the vehicle is also an important factor. Heavier vehicles tend to have a higher coefficient of static friction, as the greater mass increases the normal force between the car and the surface.

In conclusion, the coefficient of static friction for a car traveling at 115 km/h around a turn depends on several factors, including the road surface, the vehicle's tires, and the vehicle's weight.

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Radial component of the linear acceleration = 99.47 m/s^2

The diameter of the wheel, d = 51 cm

The radius, r = d/2 = 51/2 = 25.5 cm

r = 25.5/100 = 0.255 m

r = 0.255 m

At t = 1.1, first calculate the new angular velocity

The radial component of the linear acceleration is given as:

The thermometer that is commonly used to measure surface temperatures is the infrared thermometer. This type of thermometer uses infrared radiation emitted by the surface to measure its temperature without requiring direct contact.

Infrared thermometers work by detecting the intensity of infrared radiation emitted by the surface and converting it into a temperature measurement. They are quick and easy to use, and they can measure the temperature of a surface from a safe distance without physically touching the surface.

Surface probes and thermocouples with immersion probes are typically used to measure the temperature of liquids, gases, and other materials that can be easily accessed. Time-temperature indicators are used to monitor the temperature of perishable goods during storage and transportation, but they are not typically used to measure surface temperatures.

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To achieve a resistance of 100 Ω, a copper wire of approximately 1.22719 meters in length is required. If the diameter of the wire is doubled without changing its length, the resistance will decrease to 1/4th of its original value.

To calculate the length of the copper wire required to achieve a resistance of 100 Ω, we can use the formula for resistance:

Resistance = (resistivity * length) / cross-sectional area

Given that the diameter of the wire is 0.5 mm, we can calculate the radius (r) using the formula:

radius = diameter / 2

radius = 0.5 mm / 2 = 0.25 mm = 0.25 ×\(10^-^3 m\)

Using the radius, we can find the cross-sectional area (A) of the wire using the formula:

cross-sectional area = π * \(radius^2\)

cross-sectional area = π * (0.25 ×\(10^-^3 m)^2\)

cross-sectional area ≈ 1.9635 × \(10^-^7 m^2\)

Substituting the given resistance (R = 100 Ω), resistivity (ρ = 1.6 × \(10^-^8\) Ω m), and cross-sectional area (A) into the resistance formula, we can solve for the length (L):

100 Ω = (1.6 ×\(10^-^8\) Ω m * L) / (1.9635 × \(10^-^7 m^2\))

Simplifying the equation:

L ≈ (100 Ω * \(1.9635 × 10^-^7 m^2) / (1.6 × 10^-^8\) Ω m)

L ≈ 1.22719 m

Therefore, the length of the copper wire required to achieve a resistance of 100 Ω is approximately 1.22719 meters.

To calculate the change in resistance if the diameter of the wire is doubled without changing its length, we need to consider the relationship between resistance and cross-sectional area. The resistance is inversely proportional to the cross-sectional area.

If the diameter is doubled, the radius becomes 2 times larger. Thus, the new radius (r') is:

r' = 2 * r

Using the new radius, the new cross-sectional area (A') is:

\(A' = π * (r')^2 = π * (2r)^2 = 4 * π * r^2 = 4 * A\)

Therefore, the new cross-sectional area is 4 times the original area.

The resistance is inversely proportional to the cross-sectional area, so if the area is multiplied by a factor of 4, the resistance will decrease by a factor of 4.

In other words, if the diameter of the wire is doubled without changing its length, the resistance will decrease to 1/4th of its original value.

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Temperature and Density would cause change in the speed of a sound wave. Hence, the correct option is (c) i.e. both a & b.

A change in the speed of a sound wave can be caused by several factors:

1. Temperature: The speed of sound in a medium is directly proportional to the temperature of the medium. As the temperature of a medium increases, the speed of sound in that medium also increases.

2. Density: The speed of sound in a medium is inversely proportional to the density of the medium. As the density of a medium increases, the speed of sound in that medium decreases.

3. Pressure: The speed of sound in a gas is directly proportional to the pressure of the gas. As the pressure of a gas increases, the speed of sound in that gas also increases.

4. Humidity: The speed of sound in a gas, such as air, can be affected by the amount of water vapor present in the gas. As the humidity of the air increases, the speed of sound in that air decreases.

5. Composition of the medium: The speed of sound can also vary depending on the type of medium through which it is traveling. For example, sound travels faster through solids than through gases.

These factors can individually or collectively cause a change in the speed of sound waves.

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Question -

Which of the following would cause a change in the speed of a sound wave.

(a) Temperature

(b) Density

(c) Both a & b

(d) None of the above

Answer:

  neither

Explanation:

You want to know the greater of the forces of a man pushing a car uphill, or the car pushing on the man when velocity is constant.

Newton's third law of motion tells you for every action, there is an equal and opposite reaction. This means the force on the car is the same as the force on the man, since there is no net acceleration.

Neither force is larger: they are both the same.

__

Additional comment

If the car's velocity were increasing or decreasing, a net force would be indicated. That is, one or the other of the two forces would be larger.

Answer:

The friction of braking heats up the tire and the road. The temperature is so high that it reaches the melting point of the rubber in the tire. The melting rubber is what leaves a mark on the road.

Explanation:

Answer:

the friction of braking heats up the tires and the road. then the temperature gets even hotter to the point where it melts the rubber.

Explanation:

this is my answer so be careful how you copy it, but you've got this guys schools is almost out stay strong an have fun and be safe this summer keep pushing <33.

remember you're loved by many

- Jason Edwards 5/15/23

Answer:

Green light is not absorbed but reflected, making the plant appear green. Chlorophyll is found in the chloroplasts of plants. There are various types of chlorophyll structures, but plants contain chlorophyll a and b. These two types of chlorophyll differ only slightly, in the composition of a single side chain.

Explanation:

Hope that helps.

Answer:

Its not getting as hot because water and soap can act as a lubricant and it would not heat up easily because of the soapy water.

Answer:

there is less friction when your hands are soapy

Explanation:

The highest amount of SO₃ that can be created by the reaction of 2.0 mol of sulphur and 2.0 mol of oxygen is 2, or two moles.

The limiting reactant in the reaction between sulphur (S) and oxygen (O₂) in order to calculate the maximum number of moles of SO₃ that can be created.

The amount of a substance in a mole is one mole per unit of solution. It is the SI unit for measuring a substance's quantity. By dividing an object's molecular weight by its substance's molecular mass, the moles can be computed.

2SO₂ +O₂ →2SO₃

There is a 2:1 ratio. Therefore, if 2.0 moles of sulphur react with 1 mole of oxygen, 2 moles of SO₃ will result. The moles of SO₃ in the process are eliminated by the reaction.

Thus, The highest amount of SO₃ that can be created by the reaction of 2.0 mol of sulphur and 2.0 mol of oxygen is 2, or two moles.

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Person-1

\(\\ \sf\longmapsto Acceleration=\dfrac{v-u}{t}\)

\(\\ \sf\longmapsto Acceleration=\dfrac{10-0}{10}\)

\(\\ \sf\longmapsto Acceleration=\dfrac{10}{10}\)

\(\\ \sf\longmapsto Acceleration=1m/s^2\)

Person-2

\(\\ \sf\longmapsto Acceleration=\dfrac{0.25-0}{2}\)

\(\\ \sf\longmapsto Acceleration=\dfrac{0.25}{2}\)

\(\\ \sf\longmapsto Acceleration=0.125m/s^2\)

Person-1 is accelerating faster.

Answer:

ok

Explanation:

Answer:

The change of movement depends on the force that acts and the length of time it acts.

Answer:

Heroin

Explanation:

it can be smoked or injected and causes feelings of "euphoria"

Answer:

m/s is answer for your questions

The dart will move at velocity approximately 5.0 m/s when it leaves the gun.

To calculate the speed of the dart, we can use the conservation of energy principle. When the spring is compressed, it has potential energy, which is converted into the kinetic energy of the dart when it is released. The potential energy of the compressed spring can be calculated using the formula: PE = 0.5 * k * x^2, where PE is the potential energy, k is the spring constant (250 N/m), and x is the compression distance (0.05 m).

PE = 0.5 * 250 * (0.05)^2 = 0.3125 J (joules)

Now, we can use the kinetic energy formula to find the speed of the dart: KE = 0.5 * m * v^2, where KE is the kinetic energy, m is the mass of the dart (0.025 kg), and v is the speed. We can rearrange this formula to solve for v:

v = sqrt((2 * KE) / m)

Plugging in the values, we get:

v = sqrt((2 * 0.3125) / 0.025) ≈ 5.0 m/s

Therefore, the speed of the dart when it leaves the gun is approximately 5.0 m/s.

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The hydrogen transition that represents the absorption of a photon in the UV portion of the electromagnetic spectrum is Option E: n=1 to n=4.

In the hydrogen atom, the energy levels of the electrons are quantized, and transitions between these energy levels result in the emission or absorption of photons. The energy of a photon is directly related to the difference in energy between the initial and final states of the electron.

In this case, the transition from n=1 to n=4 represents the absorption of a photon in the UV portion of the electromagnetic spectrum. When an electron in the hydrogen atom absorbs a photon, it gains energy and jumps from the ground state (n=1) to the higher energy state (n=4). This transition corresponds to the absorption of UV light.

The energy of the photon absorbed is equal to the difference in energy between the n=4 and n=1 levels. The energy difference increases as the electron transitions to higher energy levels, which corresponds to shorter wavelengths in the UV portion of the electromagnetic spectrum.

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The speed of the of the object if the force is tripled is 12.12 m/s.

The centripetal force acting on an object moving in a circular path is calculated by applying the following formula as shown below.

F = mv² / r

where;

F = ( 5 x 7² ) / 3.5

F = 70 N

When the force is tripled, the new force becomes;

F' = 3 x 70 N

F' = 210 N

The new speed of the object is calculated as follows;

F = mv² / r

v² = Fr / m

v = √ ( Fr / m )

v = √ ( 210 x 3.5 / 5 )

v = 12.12 m/s

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Answer:

In 1687, Newton published one of the most important scientific books in history, the Philosophiae Naturalis Principia Mathematica, commonly known as the Principa. It was in this work that he first laid out his three laws of motion.