You have landed a summer job with a company that has been given the contract to design the ski jump for the next Winter Olympics. The track is coated with snow and has an angle of 24 degrees from the horizontal. A skier zips down the ski jump ramp so that he leaves it at high speed. The winner is the person who jumps the farthest after leaving the end of the ramp. Your task is to determine the height of the starting gate above the end of the ramp, which will determine the mechanical structure of the ski jump facility. You have been told that the typical ski-jumper pushes off from the starting gate at a speed of 2.2 m/s. For safety reasons, your design should be such that for a perfect run down the ramp, the skier's speed before leaving the end of the ramp and sailing through the air should be no more than 81 km/hr. You run some experiments on various skies used by the jumpers and determine that the coefficient of static friction between the snow and the skis is 0.11 and its coefficient of kinetic friction is 0.02. Since the ski-jumpers bend over and wear very aerodynamic suits, you decide to neglect the air resistance to make your design. How tall (in meters) must the ramp be? Use SI units ONLY.Answer to 1 decimal place precision.DO NOT include text in your strictly numerical answer.

The shear deformation of the disk under the given conditions is approximately 0.00589 meters. To find the shear deformation of the disk, we can use the formula Shear Deformation = (Shear Force * Disk Height) / (Shear Modulus * Disk Area)

Shear Force = 540 N

Shear Modulus = 1.00×10^9 N/m^2

Disk Height = 0.700 cm = 0.007 m

Disk Diameter = 4.20 cm = 0.042 m

First, we need to calculate the area of the disk. Since the disk is equivalent to a solid cylinder, its area can be calculated using the formula:

Disk Area = π * (Disk Diameter/2)^2

Disk Area = π * (0.042 m/2)^2

Next, we can substitute the values into the shear deformation formula:

Shear Deformation = (540 N * 0.007 m) / (1.00×10^9 N/m^2 * π * (0.042 m/2)^2)

Shear Deformation ≈ 0.00589 m

To know more about shear modulus, click here:-

https://brainly.com/question/33473207

#SPJ11

The height at which the power shovel lifted the load is 6 meters.

Work done is simply defined as the energy transfer that takes place when an object is either pushed or pulled over a certain distance by an external force. It is expressed as;

Work done = force × distance

Given the data in the question;

Plug the given values into the above formula and solve for the height.

Work done = force × distance

24000kgm²/s² = 4000kgm/s² ×  h

h = 24000kgm²/s² ÷ 4000kgm/s²

h = 6m

Therefore, the value of the height is 6 meters.

Learn more about work done: brainly.com/question/26115962

#SPJ1

Answer:

2,500g is the answer yes

The net force needed to accelerate a 15.0 kg bag of groceries 2.00 m/s^2 is 30.0 N.

Newton's second law of motion states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. In other words, the greater the net force applied to an object, the greater its acceleration will be, and the greater its mass, the less its acceleration will be for a given force. This law can be mathematically expressed as F = ma, where F is the net force applied to the object, m is its mass, and a is its acceleration.

The net force needed to accelerate a 15.0 kg bag of groceries 2.00 m/s^2 can be calculated using Newton's second law of motion,

F = ma

Substituting the given values, we get:

F = 15.0 kg * 2.00 m/s^2

F = 30.0 N

Therefore, the net force needed to accelerate a 15.0 kg bag of groceries 2.00 m/s^2 is 30.0 N.

To learn more about Newton's law of motion click:

brainly.com/question/29775827

#SPJ1

The work done in stretching the spring from its natural length to 10 inches beyond its natural length is 112 lb·in.

The work done in stretching a spring is given by the formula:

\(\[ W = \frac{1}{2} k (x_f^2 - x_i^2) \]\)

In this case, the spring is stretched 4 inches beyond its natural length, so the initial displacement is 4 inches. The force required to hold the spring at this displacement is 16 lb. We can use Hooke's Law to find the spring constant:

\(\[ k = \frac{F}{x_i} = \frac{16 \, \text{lb}}{4 \, \text{in}} = 4 \, \text{lb/in} \]\)

Now, we can calculate the work done in stretching the spring to 10 inches beyond its natural length:

\(\[ W = \frac{1}{2} (4 \, \text{lb/in}) \left( (10 \, \text{in})^2 - (4 \, \text{in})^2 \right) = 112 \, \text{lb·in} \]\)

Therefore, the work done in stretching the spring is 112 lb·in.

To learn more about work done refer:

https://brainly.com/question/28356414

#SPJ11

Detection methods to measure the gravitational tug of a planet on its star that is allowing us to estimate planetary mass is : (c) the astrometric and doppler methods.

Method for finding extrasolar planets and brown dwarfs from radial-velocity measurements through observation of doppler shifts in the spectrum of the planet's parent star is called doppler spectroscopy.

It is also known as the radial-velocity method or the wobble method.

Method that detects the motion of a star by making precise measurements of its position on the sky is called astrometry. This technique can be used to identify the planets around a star by measuring small changes in the position of the stars.

To know more about astrometric and doppler methods, refer

https://brainly.com/question/14191724

#SPJ4

Helium nuclei splitting to form hydrogen, and the Sun will no longer release energy will occur when all the hydrogen in the sun undergoes fusion.

This occurs when two or more atomic nuclei are combined to form one or more different atomic nuclei and subatomic particles.

In a situation where all the hydrogen in the sun has undergone fusion, the helium nuclei will split to form hydrogen, and the Sun will no longer release energy.

Read more about Fusion here https://brainly.com/question/17870368

#SPJ4

Kepler used data to derive laws of planetary motion that confirmed Copernicus's heliocentric theory, but that showed the orbits were elliptical is the build upon the foundation established by copernicus. Option A is a correct option.

Kepler built upon the foundation established by Copernicus by using data to derive laws of planetary motion that confirmed Copernicus's heliocentric theory, but that showed the orbits were elliptical.

In other words, Kepler's work refined the model of Copernicus's heliocentric theory by describing planetary motion as elliptical instead of circular.

Kepler's contribution to astronomy was significant as it allowed for more accurate predictions of planetary motion, including the speed and distance of each planet's orbit.

Kepler's work was the first to include a precise understanding of the movement of the planets, and it laid the groundwork for future developments in astronomy.

In conclusion, Kepler built upon the foundation established by Copernicus by using data to refine the model of the heliocentric theory and derive laws of planetary motion.

For similar question on heliocentric theory

https://brainly.com/question/1683524

#SPJ11

Question:-

how did kepler build upon the foundation established by copernicus?

A. kepler used data to derive laws of planetary motion that confirmed copernicus's heliocentric theory, but that showed the orbits were elliptical.

B. kepler observed the heavens and proved that planetary motion was circular around the sun. kepler discovered the three laws of thermodynamics.

C. kepler used magic to prove that the earth moved in a manner based on geometric figures, trying to bring harmony of the human soul into alignment with the universe.

D. kepler demonstrated that the motion of the planets is steady and unchanging.

Answer:

too much :(

Explanation:

\overline{a} = \frac{v - v_0}{t} = \frac{\Delta v}{\Delta t}

\overline{a} = average acceleration

v = final velocity

v_0 = starting velocity

t = elapsed time

Answer:

a = Δv⁄t.

Explanation:

Molly's experiment involved kicking a soccer ball with varying amounts of force and observing the resulting change in the ball's motion.

Newton's three laws of motion can help explain how the force of Molly's kicks affected the ball's movement.

Newton's first law of motion states that an object at rest will stay at rest and an object in motion will stay in motion with a constant velocity unless acted upon by an unbalanced force. In this experiment, the soccer ball was at rest before each kick, so the force of Molly's kicks acted as an unbalanced force, causing the ball to accelerate and move. The greater the force of her kick, the greater the acceleration and resulting distance the ball traveled.

Newton's second law of motion states that the acceleration of an object is directly proportional to the force applied and inversely proportional to its mass. In this case, the mass of the soccer ball remained constant, but the force of Molly's kicks varied. As a result, the acceleration of the ball was directly proportional to the force of her kick.

Finally, Newton's third law of motion states that for every action, there is an equal and opposite reaction. When Molly kicked the soccer ball, the ball exerted an equal and opposite force back on her foot, which is why she felt the impact of the kick.

Energy transfer also played a role in this experiment. When Molly kicked the ball, she transferred energy from her foot to the ball. The greater the force of her kick, the more energy was transferred to the ball, resulting in a greater distance traveled.

To know more about Newton's three laws of motion, visit:

https://brainly.com/question/29775827

#SPJ1

Answer:

Janaki temple and Pashupatinath Temple are found in Nepal. These structures are religious and they increase the pride of the country through tourism. These temples are important in the country and are mostly visited by tourists.

This also helps to bring in income for the country and also helps by attracting many visitors and a corresponding development of its tourism industry.

1. Force  necessary to stretch an ideal spring with a spring constant of 125 N/m by 35 cm is 437.5 N.

2. The mass of a fish that would stretch the spring by 7.55 cm from its normal length is 5.10 kg.

3. Spring constant is 267.94 N/m.

4. Spring constant is 285.71 N/m.

5. Distance will be 0.115 m.

6. Distance will be 1.986 m.

7. Spring constant is calculated to be 183.38 N/m.

8. Original length becomes 80 cm.

9. Distance covers to be 0.1924 m.

10. Equivalent spring constant becomes 150 N/m

1. The force necessary to stretch the spring can be calculated using Hooke's law, which states that F = kx, where F is the force applied, k is the spring constant, and x is the displacement from the equilibrium position.

Thus, F = kx

F = (125 N/m)(0.35 m)

F = 43.75 N.

2. Using Hooke's law again, we have

F = kx

F = (650 N/m)(0.0755 m)

F = 49.98 N.

This force is equal to the weight of the fish, so we can find its mass by dividing by the acceleration due to gravity:

m = F/g

m = 5.10 kg.

3. We can use Hooke's law once more to find the spring constant:

k = F/x

k = (43 kg)(9.81 m/s²)/(0.16 m)

k = 267.94 N/m.

4. Hooke's law gives us k = F/x

k = (80 N)/(0.28 m)

k = 285.71 N/m.

5. We can use Hooke's law to set up a proportion: F1/x1 = F2/x2, where F1 and x1 are the initial force and displacement, and F2 and x2 are the new force and displacement. Solving for x2, we get

x2 = (F2/F1)x1

x2 = (23 N/16 N)(0.08 m)

x2 = 0.115 m.

6. Hooke's law gives us F = kx = (36 N/cm)(0.073 m) = 2.628 N. This is the force required to stretch the spring by 1 cm, so the total displacement is

x = (7.3 kg)(9.81 m/s²)/(36 N/cm)

= 1.986 m.

7. We can use Hooke's law to set up an equation: mg = kx, where m is the mass, g is the acceleration due to gravity, and x is the displacement from the equilibrium position. Solving for k, we get

k = mg/x

k = (15 kg)(9.81 m/s²)/(0.80 m)

k = 183.38 N/m.

8. The original length of the cord is simply the length when no mass is attached, so it is 80 cm.

9. The total force on the bottom spring is the sum of the weights of the two springs and the mass, so

F = (0.58 kg)(9.81 m/s²) + (50 N/m + 100 N/m)(x), where x is the displacement of the two springs together. Using Hooke's law, we can write this as F = 19.24 N + 150 x.

Setting this equal to kx and solving for x, we get

x = F/(k1 + k2)

x = (19.24 N)/(50 N/m + 100 N/m)

x = 0.1924 m.

10. The spring constant of the system of springs is simply the sum of the individual spring constants, so

k = k1 + k2

k = 50 N/m + 100 N/m

k = 150 N/m.

To learn more about spring constant, here

https://brainly.com/question/14159361

#SPJ1

Answer:

Buoyancy or Upthrust

Explanation:

This is an upward force exerted by a fluid that opposes the weight of a partially or fully immersed object.

Answer: UV rays, either from the sun or from artificial sources like tanning beds, can cause sunburn. Exposure to UV rays can cause premature aging of the skin and signs of sun damage such as wrinkles, leathery skin, liver spots, actinic keratosis, and solar elastosis. UV rays can also cause eye problems.

Explanation: Uv means ultraviolet

Answer:

c

Explanation:

bouncing on a trampoline

Answer:

D: All of the Above

Explanation:

I checked C and was wrong so trust me it is D

The distance covered by the body after 15 seconds down the inclined plane is approximately 1102.5 meters.

We can use the equations of motion to solve this problem. The acceleration of the body down the inclined plane can be found using trigonometry:

a = gsin(30°) = (9.8 m/s²)(1/2) = 4.9 m/s²

where g is the acceleration due to gravity.

Using the equation of motion:

s = ut + (1/2)at²

where s is the distance covered, u is the initial velocity (which is zero in this case), and t is the time taken, we can find the distance covered after 15 seconds:

s = (1/2)4.9(15)² = 1102.5 meters

Therefore, the distance covered by the body after 15 seconds down the inclined plane is approximately 1102.5 meters.

Learn more about equations of motion:

https://brainly.com/question/30459518

#SPJ4

If a force of 20 n begins acting on the object in the opposite direction, its velocity will rise.

If there are no forces acting to accelerate or decelerate an object that is already moving with a constant speed, it will continue to move at that speed in a straight line. By defining force as a vector quantity, Newton helped to clarify the aforementioned statement.

Newton's first law of motion states that any object moving at a constant speed experiences no net external forces, so the total amount of forces acting on the object must be zero.

To know more about force visit:

https://brainly.com/question/13191643

#SPJ4

You did 122,400 Joules of work. Work is a measure of energy transfer, and in this case, it represents the energy you exerted to move yourself through the snow by applying a horizontal force.

Work is defined as the product of force and displacement in the direction of the force. In this scenario, you are pulling yourself through the snow with a horizontal force of 240 Newtons over a distance of 510 meters.

To calculate the work done, you multiply the force applied (240 N) by the distance moved in the direction of the force (510 m):

Work = Force × Distance

Work = 240 N × 510 m

Work = 122,400 Joules

Therefore, you did 122,400 Joules of work. Work is a measure of energy transfer, and in this case, it represents the energy you exerted to move yourself through the snow by applying a horizontal force.

To know more about force, refer here:

https://brainly.com/question/30526425#

#SPJ11

Answer:

start a healthy diet. But starting a healthy diet doesn't mean only eating greens, you should minimize the amount of regular food you take and eat a balanced diet.

Weight is the measure of the mass of the body. Mass is the amount of matter a body contains.

Learn more here: https://brainly.com/question/9693067

The magneto-electric effect causes both a magnetic and an electric field to exist, which is the right response to the question.

The area in which the force of magnetism acts around a magnetic material or a moving electric charge is known as the magnetic field.

If the Earth's magnetic field is perpendicular to the ground at your location, it means that the magnetic field lines are vertical and pointing downwards (or upwards) into the Earth. Since the electric field is zero, we can conclude that there is no electric current or charge in the vicinity.

If you run through this field, you will experience a magnetic field. This is because your motion through the magnetic field induces an electric field according to Faraday's law of electromagnetic induction. The induced electric field is perpendicular to both the magnetic field and your direction of motion, and it generates a magnetic field that is perpendicular to both the electric and magnetic fields. This phenomenon is known as magneto-electric effect or electromagnetic induction.

Therefore, the correct answer to the question is: you will find both a magnetic and an electric field due to the magneto-electric effect.

Learn more about magnetic field on:

https://brainly.com/question/14411049

#SPJ11

Explanation:

Particles in solids are always vibrating (moving back and forth) in place.

Answer:

E kin = 1/2 • m • v^2

E kin: kinetic energy

m: mass

v: velocity

Explanation:

The thinnest film of magnesium fluoride that can limit the reflection of 550-nm light is approximately 9.821 × 10^-7 m or 982.1 nm.

The thinnest film of magnesium fluoride that can limit the reflection of 550-nm light can be calculated using the concept of thin film interference. The formula for the minimum thickness of the film is given by t = (λ / 4) / (n - 1), where t is the thickness of the film, λ is the wavelength of light, and n is the refractive index of the film material.

In this case, the film is designed to limit the reflection of 550-nm light. Therefore, λ = 550 nm = 5.5 × 10^-7 m. The refractive index of magnesium fluoride is given as 1.38, and the refractive index of glass is 1.52.

Using the formula, the minimum thickness of the magnesium fluoride film can be calculated as follows:

t = (5.5 × 10^-7 m / 4) / (1.38 - 1.52)

  = (1.375 × 10^-7 m) / (-0.14)

  ≈ -9.821 × 10^-7 m

Therefore, the thinnest film of magnesium fluoride that can limit the reflection of 550-nm light is approximately 9.821 × 10^-7 m or 982.1 nm.

The explanation behind this is based on the principles of interference of light waves. When light passes through a thin film, some of the light reflects from the upper surface of the film and some from the lower surface.

These reflected waves can interfere constructively or destructively, depending on the thickness of the film and the wavelength of the light. In the case of destructive interference, the reflected waves cancel each other out, resulting in minimal reflection.

To achieve this, the thickness of the film needs to be such that the reflected waves from both surfaces are exactly out of phase and interfere destructively.

The formula mentioned earlier, t = (λ / 4) / (n - 1), calculates the minimum thickness required for destructive interference. By using the given values of λ (550 nm) and the refractive index of magnesium fluoride (1.38), we can calculate the minimum thickness to be approximately 982.1 nm.

Coating lenses with this thin film of magnesium fluoride helps reduce reflections and improve image clarity in sophisticated cameras, ensuring that the maximum amount of light is transmitted through the lens rather than being reflected away.

Learn more about reflection here; brainly.com/question/29788343

#SPJ11

Answer:

W = F × d

W = 15 × 3

W = 45 Joules

Answer:

A black hole is a region of spacetime where gravity is so strong that nothing—no particles or even electromagnetic radiation such as light—can escape from it. The theory of general relativity predicts that a sufficiently compact mass can deform spacetime to form a black hole.

The Kidney transplants are a highly sought after treatment option for individuals with kidney failure. However, not everyone who needs a kidney transplant can have potential one due to several reasons. One of the primary reasons is the shortage of donor organs.

There are far fewer organs available than there are individuals who need them. Additionally, not everyone is eligible to receive a transplant. Individuals with certain medical conditions, such as cancer or infections, may not be suitable candidates for a transplant. Age and overall health can also be factors that affect eligibility. Even for those who are eligible and have a suitable donor, the process of finding a compatible donor can be lengthy. Dialysis machines are used to help keep individuals with potential kidney failure alive while they wait for a transplant or until their condition improves. Dialysis can be time-consuming, uncomfortable, and can require multiple sessions a week. In conclusion, while kidney transplants can be a life-changing treatment option for individuals with kidney failure, the scarcity of donors, eligibility requirements, and the time-consuming process of finding a compatible donor can limit access to this treatment option. Dialysis machines remain an essential treatment option for those who cannot receive a transplant.

learn more about potential here.

https://brainly.com/question/16267680

#SPJ11

Answer:

I think true but im not sure sorry if this didnt help/

Explanation:

Answer:

true 50%

Explanation:

Answer:

This is a paradox — an inconsistency that often leads people to think that time travel cannot occur in our universe." A variation is known as the "grandfather paradox" — in which a time traveler kills their own grandfather, in the process preventing the time traveler's birth

Explanation:

hope this Wil help ....