I'm sorry, but as a language model AI, I don't have the ability to see or access any pictures. Therefore, I cannot confirm whether you have a big eye picture or not. If you have a specific picture in mind, you may want to check your own photo collection or ask someone who has seen the picture. **

The ice skates are typically sized similarly to regular shoes, ranging from children's sizes around 6 inches in length to adult sizes that can be over 12 inches long. The size of the ice skates will vary depending on the brand and style, but they are generally designed to fit snugly to provide support and control while skating. It is important to choose the correct size ice skates to ensure comfort and proper performance on the ice. **

To determine if the inline skates are too big, you should check if there is excess space between your toes and the front of the skate. If your toes are not snugly fit and have room to move around, then the skates may be too big. Additionally, if you experience difficulty in controlling the skates or feel unstable while wearing them, it could be a sign that they are too big. It's important to ensure a proper fit for safety and comfort while skating. **

When entering a 90-degree curve, it is best to enter in a lower gear to maintain control and stability. This allows the engine to provide more power and helps to slow the vehicle down, reducing the risk of skidding or losing control. Typically, entering a 90-degree curve in second or third gear is recommended, depending on the speed and size of the curve. It's important to adjust your speed and gear selection based on the specific conditions of the road and the vehicle you are driving. **

The demand curve represents the relationship between the price of a good or service and the quantity demanded by consumers. It slopes downward from left to right, showing that as the price decreases, the quantity demanded increases. On the other hand, the supply curve represents the relationship between the price of a good or service and the quantity supplied by producers. It slopes upward from left to right, indicating that as the price increases, the quantity supplied also increases. Both curves are essential in understanding how prices are determined in a market economy. **

It depends on the speed and sharpness of the curve. If the curve is very sharp and you are going at a low speed, it is best to downshift to 1st gear to maintain control and prevent stalling. However, if the curve is not very sharp and you are going at a moderate speed, downshifting to 2nd gear should be sufficient to navigate the curve smoothly. Always consider the specific conditions of the road and your vehicle when deciding which gear to downshift to. **

The size of the gear depends on the specific application and requirements. Factors such as the amount of torque needed, the speed of rotation, and the space available will all influence the size of the gear. It is important to carefully consider these factors and consult with a mechanical engineer or gear specialist to determine the appropriate size for the gear in order to ensure optimal performance and longevity. **

The curve shown in the image is a cosine curve, which is similar to a sine curve but with a phase shift of 90 degrees. This means that the cosine curve starts at its maximum value when the sine curve is at its zero point, and vice versa. Additionally, the cosine curve has the same periodicity and amplitude as the sine curve, but it is shifted to the right by 90 degrees. Overall, the main difference between the two curves is the phase shift. **