your dog sleeps on the floor. he has a mass of 14 kg. the coefficient of static friction between him and the floor is 0.3, and the coefficient of kinetic friction is 0.25.

Answer:

The time the pilots have to take evasive action is approximately 36.699 seconds

Explanation:

The direction of the planes = Towards each other

The speed of each plane, v₁, v₂ = 721 km/h

The initial distance between the two planes, d = 14.7 km

The relative velocity of the two planes, v = v₁ + v₂

v = 721 km/h + 721 km/h = 1,442 km/h

The time it will take the planes to meet, t = d/v

∴ t = 14.7 km/(1,442 km/h) = (21/2,060) h × 60 min/hr × 60 s/min ≈ 36.699 s

The time it will take the planes to meet = The time the pilots have to take evasive action, t ≈ 36.699 seconds.

An electromagnet's strength can be increased by any of the following methods: By putting a low-permeability core in the coil, by increasing the number of turns of wire, and by increasing voltage.

An electromagnet is a device that uses electricity to generate a magnetic field. Electromagnets are used in a variety of applications, including speakers, motors, and generators. Electromagnets can be used in many ways because their magnetic field can be easily controlled by changing the electric current flowing through them.

The strength of an electromagnet is determined by the number of turns of wire in the coil and the amount of current flowing through the wire. Increasing the number of turns of wire will increase the magnetic field strength of the electromagnet. Also, a low-permeability core in the coil can increase the magnetic field strength of the electromagnet. Permeability is the ability of a material to be magnetized. The core can concentrate the magnetic field, increasing the strength of the magnetic field. Finally, increasing the voltage applied to the electromagnet will increase the magnetic field strength.

The complete question is:

"The strength of an electromagnet is increased by _____

putting a low-permeability core in the coil.

increasing the number of turns of wire.

increasing voltage."

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The piece of evidence that suggests that the inner planets were formed from the same rotating cloud of gas and dust is that the planets orbit the sun in the same direction and in the same plane

Smaller planets like Mercury, Venus, Earth, and Mars are considered inner planets. Mercury is thought to be the smallest inner planet, with Earth being the largest. The vastly larger outer planets, such as Jupiter, Saturn, Uranus, and Neptune, are the opposite.

A route that an object or planet in space follows around another body is referred to as an orbit. Moons are satellites that orbit many planets. A man-made satellite is also possible, such as the International Space Station.

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It is because the weight W = 0, due to g = a, the person falling during the free fall will therefore experience weightlessness.

A free fall is a situation where a body or an object fall solely under the influence of gravity.

Why does a person feel weightlessness during freefall​ ?

The weight of a body = mg

When a person is falling, the person will be falling with a certain acceleration. The weight W of the person will be;

W = m( a - g )

During free fall, acceleration a will be equal to acceleration due to gravity g. That is, a = g

W = m( a - a )

W = m( 0 )

W = 0

Since the weight W = 0, the person falling during the free fall will therefore experience weightlessness.

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The minimum distance between the two dots that can be distinguished by the person's eye is approximately 1.22 × \(10^-3 cm.\)

The limiting angle of resolution of the human eye is the smallest angle between two points that can be distinguished as separate. It is given by the formula:

sinθ = 1.22 λ/D

where θ is the limiting angle of resolution, λ is the wavelength of light, and D is the diameter of the pupil.

In this case, we can assume the wavelength of light to be 550 nm, and the diameter of the pupil to be 5 mm. Substituting these values in the above equation, we get:

sinθ = 1.22 × 550 × \(10^-9\) / 5 × \(10^-3\)= 1.34 × \(10^-5\)

Next, we can use trigonometry to calculate the minimum distance between the two dots that can be distinguished by the person's eye. Let x be the minimum distance between the dots. Then, we have:

x/43.4 = tanθ

Substituting the value of θ, we get:

x = 43.4 × tan(1.34 × \(10^-5\)) = \(1.22 × 10^-3 cm\)

Therefore, the minimum distance between the two dots that can be distinguished by the person's eye is approximately 1.22 × \(10^-3 cm.\)

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s = displacement; u = initial velocity; t = time of motion

Answer:

what does it mean for a plate to subduct?

Explanation:

Subduction is a geological process in which the oceanic lithosphere is recycled into the Earth's mantle at convergent boundaries. Where the oceanic lithosphere of a tectonic plate converges with the less dense lithosphere of a second plate, the heavier plate dives beneath the second plate and sinks into the mantle.

The image taken by a telescope of the three stars will be backwards. This is because the light from the stars is bent by the lenses in the telescope, and the image is projected upside down and reversed.

The same is true for any object that is viewed through a telescope.

If you look through a telescope backwards, the image will be right-side up, but it will still be inverted. This is because the lenses in the telescope are still bending the light, but the image is being projected onto the back of the eyepiece instead of the front.

There are some telescopes that have special eyepieces that can be used to correct the inversion of the image, but these are not typically used for astronomical observations.

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The present value of the following single amounts are as follows;

PV for FV = $20,000, I =7%, N =10 years is $10,155.84

PV for FV = $14,000, I =8%, N =12 years is $4,489.92

PV for FV = $25,000, I =12%, N =20 years is $2,590.11

PV for FV = $40,000, I =10%, N =8 years is $18,520.89.

Future value (FV) =$20,000,

Interest rate (I) =7%,Time (n) = 10 years

The present value (PV) can be calculated as follows;

PV = FV / (1 + i)n = 20000 / (1 + 0.07)10PV = 20000 / 1.96715PV = $10,155.84

Future value (FV) =$14,000,

Interest rate (I) =8%,

Time (n) = 12 years

The present value (PV) can be calculated as follows;

PV = FV / (1 + i)n = 14000 / (1 + 0.08)12PV = 14000 / 3.12159PV = $4,489.92

Future value (FV) =$25,000,

Interest rate (I) =12%,Time (n) = 20 years

The present value (PV) can be calculated as follows;

PV = FV / (1 + i)n = 25000 / (1 + 0.12)20PV = 25000 / 9.64632PV = $2,590.11

Future value (FV) =$40,000,Interest rate (I) =10%,Time (n) = 8 years

The present value (PV) can be calculated as follows;

PV = FV / (1 + i)n = 40000 / (1 + 0.1)8PV = 40000 / 2.15893PV = $18,520.89

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If the mass of the sun, the mass of Earth, and the Sun-Earth distance all doubled, the force of gravity between the sun and Earth would quadruple.

The force of gravity between two objects is determined by the product of their masses and inversely proportional to the square of the distance between them, according to the law of universal gravitation.

When the masses of both the sun and Earth are doubled, the force of gravity between them will increase by a factor of 2×2 = 4. Doubling the distance would result in the force decreasing by a factor of (1/2)² = 1/4. However, since both the masses and the distance are doubled, the overall effect is an increase in the force of gravity by a factor of 4.

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Answer:

jupiter they have 79 moons,saturn has 62,uranus has 27,neptune has 14,pluto has 5,

Explanation:

Answer:

Explanation:

P = mv  

m = P/v

m = .25/3 = .08 Kg ... A

When the temperature of the blocks is the same as the temperature of your hand, you feel neither hot nor cold to the touch. Hence, option ( 3) is correct.

Temperature is a unit used to describe hotness or coldness. It can be stated in terms of any number of arbitrary scales and shows the direction in which heat energy will naturally flow, i.e., from a hotter body to a colder body (one at a lower temperature).

Temperature is not the same as the energy of a thermodynamic system; for instance, an iceberg has a significantly larger total heat energy than a match, despite the fact that a match is burning at a much higher temperature.

If you touch a block that is at higher than or  at lower than  the temperature of your hand, you feel hot or cold respectively. But,  when the temperature of the blocks is the same as the temperature of your hand, you feel neither hot nor cold to the touch.

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Answer:

R= v/I

R= 9/1.05=8.5714 ohms

The effective access time for the system is 5.95 units of time.

Calculate the effective access time for the system with a given cache hit ratio, we can use the concept of the "average memory access time" (AMAT).

The AMAT takes into account the time required for both cache access and RAM access, weighted by their respective hit and miss probabilities.

Cache access time: 1 unit of time (since cache access is 100 times faster than RAM access)

RAM access time: 100 units of time

Cache hit ratio: 95% (or 0.95)

Calculate the effective access time (EAT), we can use the following formula:

EAT = (cache hit time) + (cache miss time * miss ratio)

Cache hit time = cache access time = 1 unit of time

Cache miss time = RAM access time = 100 units of time

Miss ratio = 1 - cache hit ratio = 1 - 0.95 = 0.05

Plugging in the values, we get:

EAT = (1 * 0.95) + (100 * 0.05) = 0.95 + 5 = 5.95 units of time

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Use function notation to write an equation or expression for each statement the answer will get f(13.5) is 20.

Function f gives the temperature, in degrees celsius, t hours after midnight.Use function notation to write an equation or expression for each statement.

The temperature is provided by the f function in degrees Celsius, t hours after midnight.

Consequently, we shall have f for the temperature at 12:00 AM (exactly midnight) (0).

We will have f at 1:00 AM, one hour after midnight (1).

Additionally, we will have f for 12:00 PM (noon) (12).

The equation for the temperature at 1:30 PM is what we're looking for.

1.5 hours after noon, 1:30 PM is 13.5 hours after midnight.

Consequently, the appropriate sentence would be:

f(13.5)=20.

The complete question is Function f gives the temperature, in degrees Celsius, t hours after midnight. Choose the equation that represents the statement: “At 1:30 p.m., the temperature was 20 degrees Celsius.” Group of answer choices f (1:30) = 20 f (1.5) = 20 f (13:30) = 20 f (13.5) = 20

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if sufficiently high temperatures (R) are achieved in the laboratory, nuclear fusion (S) becomes a reality, and as a result, the world's energy problems (E) will be solved.

C=  Funding for nuclear fusion will be cut.

H =  Supply of hydrogen fuel is limited.

R = Sufficiently high temperatures are achieved in the laboratory.

S =  Nuclear fusion becomes a reality.

E = World's energy problems are solved.

We then represent the statements as:

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Answer:19.39

Explanation:

Answer:

These deep-ocean currents are driven by differences in the water's density, which is controlled by temperature (thermo) and salinity (haline). This process is known as thermohaline circulation.

Explanation:

Complete Question:

The length, breadth and height of an object are 20 cm, 15 cm and 25 cm respectively. Its mass is 7 kg. Find its volume and density

Answer:

a. Volume of cuboid = 7500 cm³

b. Density = 0.000933 Kg/cm³

Explanation:

Given the following data;

a. To find the volume of the object.

An object that has a length, breadth and height is a cuboid.

Mathematically, the volume of a cuboid is given by the formula;

Volume of cuboid = length * breadth * height

Substituting into the formula, we have;

Volume of cuboid = 20 * 15 * 25

Volume of cuboid = 7500 cm³

b. To find the density of the object;

Density can be defined as mass all over the volume of an object.

Simply stated, density is mass per unit volume of an object.

Mathematically, density is given by the formula;

\( Density = \frac {mass}{volume} \)

Substituting into the formula, we have;

\( Density = \frac {7}{7500} \)

Density = 0.000933 Kg/cm³

Grains, pasta, etc provides the body with energy in the form of carbohydrates because they're absorbed quickly by the body and used for energy.

According to Einstein's famous equation, the mass of a 32He nucleus is less than the sum of the masses of a 1H and a 2H nucleus.

A nucleus is the center portion of an atom that is kept together by the strong nuclear force and includes protons and neutrons. An atom's nucleus makes up the majority of its mass yet takes up a very little amount of its volume.

Einstein's famous formula E=mc2, which connects mass and energy, may be used to determine the mass of a 32He nucleus as well as the total of the masses of a 1H and a 2H nucleus, when they are apart from one another.

Atomic mass units (amu) may be used to find the nuclei's masses, which can then be translated to kilograms (kg) using the equation.

A 32He nucleus has a mass of 4.0026 amu, or 6.6465 x 10-27 kg.

A single 1H nucleus has a mass of 1.0078 amu, or 1.6737 x 10-27 kg.

A 2H nucleus has a mass of 2.0141 amu, which is 3.3431 x 10-27 kg.

The combined masses of the 1H and 2H nuclei are:

2.3431 x 10–27 kg plus 1.6737 x 10–27 kg equals 5.0168 x 10–27 kg.

As the fusing of hydrogen nuclei to generate helium loses energy in the form of radiation, according to Einstein's famous equation, the mass of a 32He nucleus is thus somewhat less than the sum of the masses of a 1H and a 2H nucleus.

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After the effective drag coefficient of the skydiver plus the parachute increases to 60. 0 kg/m, drag force acting on the skydiver immediately after she has opened the parachute is found to be 188160N.

Air pressure

An open parachute expands the skydiver’s cross-sectional area as he falls, increasing the amount of air resistance he faces (as observed in the animation below).

As soon as the parachute is opened, air resistance outweighs the pull of gravity.

According to the drag equation, drag D is equal to the drag coefficient. Cd multiplied by density r, velocity V squared, and the reference area.

We must choose a value for Cd in order to calculate drag given the air conditions, shape, and inclination of the object.

Here we know,

K\(v^{2}\) = mg

K\(v^{2}\) = 80 x 9.8

K\(v^{2}\) = 784.5

V = 56 m/s

Then fdrag = \(60*(56)^2\)

fdrag = 188160 N

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Complete Question

A skydiver of mass 80.0 kg (including parachute) jumps off a plane and begins her descent. for the magnitude of the Throughout this problem use 9.80 acceleration due to gravity.

When the parachute is fully open, the effective drag coefficient of the skydiver plus the parachute increases to 60. 0 kg/m. What is the drag force fdrag acting on the skydiver immediately after she has opened the parachute?

The displacement covered by the particle in the given time is 50 meter.

The rate at which a body's displacement changes in relation to time is known as its velocity. Velocity is a vector quantity with both magnitude and direction. SI unit of velocity is meter/second.

Initial velocity of the particle: u = 10 m/s.

Final velocity of the particle: v = 15 m/s.

Time interval: t = 4 second.

Hence, the average velocity of the particle = (10+15)2 m/s = 12.5 m/s.

The displacement covered by the particle in the given time:

s = average velocity × time interval

=  12.5 m/s × 4 second.

= 50 meter.

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The 50 kg mass on 4 m2  on will exert more pressure.

Pressure is described as the force applied perpendicular to the surface of an object per unit area over which that force is distributed.

Mathematically pressure = force / area

From Newton's second law

force = mass x acceleration where Acceleration due to gravity = 9.8m/s²

Comparing both pressures where

P1 = 100x 9.8 / 10

p1 = 100 pa

p2 = 50 x  9.8/ 4

p2 = 125 pa

Therefore The 50 kg mass on 4 m2  on will exert more pressure since it exerts more pressure.

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Answer:

the radiation pressure that has to push the star

Explanation:

In the stars there are two forces that act in the opposite direction.

- On the one hand there is the force of gravity that the star has to collapse

- On the other is the radiation pressure that has to push the star. This pressure comes from the radiation and velocity of the particles involved in nuclear reactions.

Answer:

definitely top answer

Explanation:

because it make sense

The answer is A.

t = ( 2h / g )^1/2 = ( 2 x 6.4 / 9.8 )^1/2 = 1.14s

Given what we know, we can confirm that baby Suzanna is able to see the object and slightly distinguish its color.

The ability to see is developed at the end of the embryonic phase of life, meaning that at the moment of birth, a baby has the ability to see. Furthermore, a baby develops the ability to distinguish basic shades of colors such as green and red beginning at about 2 months old, meaning Suzanna should now be able to see and identify the color of the block.

Therefore, we can confirm that baby Suzanna is able to see the object and slightly distinguish its color.

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