Pun zapato de golf tiene 10 tacos cada uno con un área de 0.01 pulgadas en contacto con el piso suponga que caminar hay un instante en que los tacos soportan el peso completo y una persona de 180 libras cuál es la presión ejercida por los tacos sobre el suelo

Answer:Most physics and biomechanics studies of a golf swing are concerned with the motion of a ... The top surface of the concrete was much smoother than the ball, ... The ball will then roll like a coin on its edge or like a ball used in lawn bowls. ... centre of the club head then the force of the ball pushing against the face

Explanation:

The acceleration of free fall on the planet is given by 39.2 m/s².

The acceleration of free fall is the acceleration at which a body falling freely experiences the gravitational pull of a single planet. It is also known as a gravitational acceleration.

Value of  the acceleration of free fall on earth is 9.8 m/s².

The formula of acceleration of free fall on any planet is given by:

g₁ = GM/R²

As the extrasolar planet appears to be rockier and denser than earth. it is 16 times as massive as earth, but its diameter is only twice that of earth, the acceleration of free fall on any planet is given by:

g₁ = GM/R² = 16GMe/(2Re)² = 4 GMe/Re = 4g = 4× 9.8 m/s² = 39.2 m/s² .

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The speed of the cart is 4.67 m/s.

The momentum is conserved in the absence of any external force. The total momentum before any interaction between two objects is equal to the total momentum after the interaction. Hence, the final momentum is equal to the initial momentum. We can use this law to solve the given question.

Therefore, the initial momentum of the system is = m1v1+m2v2

(m1, v1, m2, v2 are the masses and velocities of the objects)Here, m1=1000 kg, v1=5.0 m/s, m2=70 kg, and v2=0 (man is at rest)Initial momentum = 1000 x 5.0 + 70 x 0 = 5000 kg m/s. The man starts running to the left with a speed of 10 m/s relative to the cart. It means the man is moving at (5-10) = -5 m/s relative to the ground. Here, we need to find the final velocity of the cart. The man will have a velocity of -5 m/s relative to the ground. We need to calculate the final velocity of the cart.

Considering the conservation of momentum,

Initial momentum = final momentum(1000+70)v

final = 1070(vfinal) = 5000/1070

The final velocity of the cart is 4.67 m/s.

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Human activities such as burning of fossil fuels caused carbon dioxide levels to change at a faster rate from thousands of years ago.

This is a gas which is derived from carbon reacting with oxygen and is formed when fossil fuels such as coal are burnt in air.

The use of petroleum products from fossil fuels in automobiles and industries are responsible for the increase in carbon dioxide level.

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A 65-year-old man's energy intake should focus on meals c.) with a lower caloric density and increased nutrient density

Calorie density represents a metric that is employed to determine how many calories are contained in a given amount of food. For a 65-year-old male, meals with a lower calorie density and a higher nutritional density would be ideal. People's metabolisms tend to slow down as they become older, so they need fewer calories.

To preserve their health, they still require enough nourishment, though. By choosing foods that are high in nutrients yet low in calories, such as fruits, vegetables, whole grains, lean proteins, and healthy fats, one may meet nutritional needs while limiting calorie intake. Adding more fibre to your diet can also help ya person to lose weight and maintain good digestive health.

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After canceling out the common units, we can observe that the friction factor (f) is dimensionless, meaning it has no units.

The formula that has been provided for head loss through a straight pipe is commonly known as the Darcy-Weisbach equation, which relates the head loss to the flow rate and properties of the pipe. The friction factor f is a measure of the resistance to flow through the pipe and is determined by the roughness of the pipe wall and the Reynolds number of the flow. A detailed explanation of how to calculate the friction factor is beyond the scope of this answer, but it involves solving the Colebrook-White equation, which is an empirical relation derived from experimental data. The friction factor is an important parameter in many fluid mechanics problems, as it affects the pressure drop and energy losses in the system.

The unit of the friction factor (f) in the equation for head loss (h) through a straight pipe can be determined from the

equation h = (4 * f * l * u²) / (2 * g * d). In this equation, h is the head loss (m), l is the pipe length (m), u is the average flow velocity (m/s), g is the gravitational acceleration (m/s²), and d is the pipe diameter (m).

To find the unit of friction factor (f), we need to rearrange the equation to solve for f. This can be done by multiplying both sides by (2 * g * d) and then dividing by (4 * l * u²):

f = (h * 2 * g * d) / (4 * l * u²)

Now, we can substitute the units of each variable into the equation:

f = [(m) * (m/s²) * (m)] / [(m) * (m/s)²]

Thus, after canceling out the common units, we find that the friction factor (f) is dimensionless, meaning it has no units.

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The total capacitance would be 3F. The farad is the SI unit for capacitance.

Capacitance is the term used to describe a capacitor's capacity to hold charges. Pairs of opposing charges are held apart in capacitors to retain energy. A parallel plate capacitor has the most basic construction and is made up of two metal plates with a space in between them.

If Cs is the effective capacitance and many capacitors with capacitances C1, C2, C3,... Cn are linked in series, then (1/C1) + (1/C2) + (1/C3) ——-(1/Cn).

All capacitance value is = 2F

Three capacitors are series connected,

\(= \frac{1}{2} +\frac{1}{2} +\frac{1}{2}\)

\(= \frac{3}{2}\)

These capacitors are connected in parallel,

\(= \frac{3}{2} +\frac{3}{2}\)

\(=\frac{6}{2}\)

\(=3\)F

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Answer:thrust is not a force,upthrust is a force

Explanation:thrust means do something forcefully and upthrust is a force that helps a ship float and pushes an object upwards

The form(s) of energy does the original GPE was transformed is kinetic energy.

If an object is lifted, work is done against gravitational force. The object gains energy.

The equation for calculating gravitational potential energy is

GPE =mgh

where, GPE is the gravitational potential energy, m is the mass, h is the change in height and g is the acceleration due to gravity.

The potential energy is just opposite of the kinetic energy. When potential energy is lower, the kinetic energy is higher.

Thus, the original GPE was transformed into kinetic energy.

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The refrigerator use 1000 J energy in each second with a performance coefficient 0.25, a refrigerator draws 200 j from the cold reservoir every second.

The ratio of effort (energy) required to usable heating or cooling provided is known as the coefficient of performance, or COP, of a heat pump, refrigerator, or air conditioning system. More COPs translate into greater effectiveness, less energy (power) usage, and hence cheaper operational costs.

We know that,

Coefficient of performance(COP) = Q/W = 0.25 (Given)

Q =  removal of energy from the cold reservoir = 200 J (Given)

W = work done in each second

Hence,

W = Q/COP = 200/0.25 = 800

Now the total energy in use (E) = removal of energy + work done

Hence,

E = Q+W = (200 + 800) J = 1000 J.

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Answer:

an object in motion stays in motion an object at rest stays in rest

Explanation:

Answer:Kinetic energy of the girl and her bike is 5.544 kJ

Explanation:

Given that a girl is riding bike at speed of 12m/s

Also, mass of Girl is 55kg and mass of bike is 22kg

Let, Total mass of girl and bike be M=22+55=77kg

Now, Kinetic energy is given by K=

Hence, Kinetic energy of the girl and her bike will be

K=

K=

K=5544J

Thus, Kinetic energy of the girl and her bike is 5.544 kJ

Answer:

wavelength

Explanation:

Electromagnetic waves is a propagating medium used in all communications device to transmit data (messages) from the device of the sender to the device of the receiver.

Generally, the most commonly used electromagnetic wave technology in telecommunications is radio waves.

Radio waves can be defined as an electromagnetic wave that has its frequency ranging from 30 GHz to 300 GHz and its wavelength between 1mm and 3000m. Therefore, radio waves are a series of repetitive valleys and peaks that are typically characterized of having the longest wavelength in the electromagnetic spectrum.

Basically, as a result of radio waves having long wavelengths, they are mainly used in long-distance communications such as the carriage and transmission of data.

The distance from one peak to the next peak is called wavelength. This distance is also equal to the distance from one trough of a wave to another.

Mathematically, wavelength is calculated using this formula;

\( Wavelength = \frac {speed}{frequency} \)

Answer: it’s Supernovae that are moving away at an accelerating rate.

The evidence for the existence of dark energy is that Supernovae that are moving away at an accelerating rate.

is evidence for the existence of dark energy.

Much more evidence took taken earlier the year from a survey of 250,000 galaxies.

Dark matter are often known to be matter that we cannot see but one which can exerts a gravitational influence on stars and galaxies.

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Answer:

A=4

B=3

c=2

D=1

Explanation:

since the person moving in opposite direction so displacement =distance in east/west - distance in west/east

Answer:

light travels in a straight line

Explanation:

the others are wrong

Strong x-ray beams can be produced when cathode rays strike a metal anode.

This process is known as the production of bremsstrahlung radiation. When high-speed electrons, also called cathode rays, are accelerated and then collide with a metal target, they are abruptly decelerated, and the kinetic energy lost is converted into X-ray photons.

The resulting X-ray beam produced can be strong and intense, and its properties depend on the energy of the incident electrons and the material of the target.

Gamma rays moving through a magnetic field, alpha rays passing through a thin metal foil, or beta rays being absorbed by bones do not directly produce strong X-ray beams.

In summary, the correct answer is A) cathode rays striking a metal anode can produce strong X-ray beams.

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Combining elements into a compound can produce a new compound which is a mixture of the mixed elements.

A mixture in chemistry is a term used to denote the combination of two or more elements, which may or not conserve their original physical and chemical properties after forming a new combination.

Therefore, with this data, we can see that a mixture is caused by the combination of two or more elements in order to form a new which may or not preserve the original characteristics of these elements.

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Answer:

50m/s

Explanation:

v = f*w

Answer:

50 ans..

Explanation:

Data :

v = ?

wavelength= 2.5 m

f = 20 Hz

Formula:

speed = (frequency )(wavelength)

Solution:

v = ( 20 )( 2.5 )

v = 50 metre per second Ans ...........

The required dimensions which will result in the largest pond are calculated to be l = 50 feet, b = 50 feet.

The perimeter of the rectangular pond is given as 200 feet.

Mathematically, we know perimeter = 2( l + b)

So, 2( l + b) = 200

( l + b) = 100

Breadth = 100 - length

The area of rectangle = l b

A = l (100 - l) = -l² + 100 l

The function has a maximum and the parabola opens down if the x² coefficient is negative.

A = -x² + 100 x

We have a < 0, so f(x) has a maximum,

we know that, f(-b/2a) = maximum

l = -b/2a = -100/2(-1) = 50

b = 100 - l = 100 - 50 = 50

The dimensions for maximum area is given as, l = 50 feet, b = 50 feet.

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Answer:

If the Lego building is shaken side to side, it will withstand up to 60 seconds because front to back will cause the top of the building to collapse.

What's the relationship

\(\\ \rm\Rrightarrow T=2\pi \sqrt{\dfrac{l}{g}}\)

\(\\ \rm\Rrightarrow T^2g=4\pi ^2\ell\)

\(\\ \rm\Rrightarrow\ell=\dfrac{T^2g}{4\pi^2}\)

4A can be correct

The correct option is: 2A cm

In a simple harmonic motion, the particle moves back and forth around a mean position. The distance covered by the particle in one time period depends on the amplitude of the oscillation.

The time period (T) of a simple harmonic motion can be expressed in terms of the frequency (f) as:

T = 1/f

The frequency (f) of a simple harmonic motion can be related to the angular frequency (ω) as:

ω = 2πf

Therefore, the time period (T) can also be expressed in terms of the angular frequency (ω) as:

T = 2π/ω

The displacement of the particle at any time (t) during the simple harmonic motion can be expressed as:

x = A cos(ωt)

where x is the displacement, A is the amplitude, and cos(ωt) is the cosine function.

The particle moves from its initial position to its maximum displacement (+A), then back to its initial position, and finally to its maximum displacement in the opposite direction (-A), before returning to its initial position again. Therefore, the distance covered by the particle in one time period is twice the amplitude (2A).

Therefore, the correct option is:

2A cm

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Answer:

4 seconds

Explanation:

The frequency of a body is the number of oscillations in one second. It is the number of cycles per unit time. The S.I unit of frequency is the Hertz (Hz).

The period of a body is the time taken to complete one oscillation. The period is inversely proportional to the frequency of the body. It is the reciprocal of frequency and the S.I unit is second (s).

A body oscillates with 25hz. Therefore the frequency (f) = 25 Hz.

The period (T) is given as:

\(Period (T)=\frac{1}{frequency(f)} \\T=\frac{1}{f} =\frac{1}{0.25}=4\\T=4\ seconds\)

ANSWER:

$ 12177

STEP-BY-STEP EXPLANATION:

We must calculate the area of the playground, knowing that the area is equal to length times width, like this:

Now, knowing the area, we can calculate the total cost, like this:

The resurfacing cost is $ 12177

Answer:

C

Explanation:

a series circuit would be an odd choice to power a battery or light a lamp when a direct would be much more efficient, and it's not converting types of energy, so C is the best possible answer

Pressure = Force / area

m= mass = 17.3 kg

g= gravity = 9.8 m/s^2

Force = m * g = 17.3 kg * 9.8 m/s^2 = 169.54 N

P = F / A

A = area = 1.44^2 = 2.0736 m^2

P = 169.54 N/ 2.0736 m^2 = 81.76 Pa

When cycling forward in a straight line, the knee is rotating about a(n) horizontal axis.

Cycling, often known as bicycling or biking when done on a two-wheeled bicycle, refers to the use of cycles for transportation, recreation, exercise, or sport. Cycling enthusiasts are known as "cyclists," "bicyclists," or "bikers." In addition to riding a two-wheeled bicycle, "cycling" also refers to using a recumbent bike or other comparable human-powered vehicles (HPVs), such as a unicycle, tricycle, or quadricycle.

Since their invention in the 19th century, bicycles have grown to almost one billion in number globally. In many regions of the world, especially in heavily populated European towns, they are the main form of transportation. For short to medium distances, cycling is widely regarded as an effective and efficient means of transportation.

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