1. A 2.0 kg block is dropped from a height of 80 cm onto a spring of force constant k = 1960 N/m, as shown in Fig. 12-19. Find the maximum distance the spring will be compressed. I figured that energy due to gravity must equal the energy of the spring -...
Try to minimize ground contact time and increase flight time, a strategyshown to increase maximum velocity when sprinting. Think: fast feet, balls of feet. Don’t overstride.1Monte, A., Muollo, V., Nardello, F., & Zamparo, P. (2016). Sprint running: how changes in step frequency af...
A magnifying globe shows a plane and boats over a map of the Bermuda Triangle, the site of many 'mysterious' disappearances. Lightguard/Getty Images You won't find it on any official map, and if you're sailing in the Atlantic, you're likely not to even notice when you cross its vag...
An anemometer can also measure wind direction using a wind vane or a weather vane. The wind vane is a flat or arrow-shaped plate that is mounted on top of the anemometer. The vane is free to rotate horizontally, and it always points into the wind, providing information about the wind di...
Use the formula v = λf to find the resonance frequency of a single continuous wave. The letter "v" stands for the wave velocity, whereas "λ" represents the distance of the wavelength. This formula states that the wave velocity equals the distance of the wavelength multiplied by the resona...
That is to say, you accelerate the 1-pound baseball with your arm so that it obtains a velocity of 21 mph. Your body reacts, but it weighs 100 times more than the baseball. Therefore, it moves away at one-hundredth the velocity of the baseball, or 0.32 feet per second (0.21 mph)....
Flapping wings produce lift and thrust in bio-inspired aerial robots, leading to quiet, safe and efficient flight. However, to extend their application scope, these robots must perch and land, a feat widely demonstrated by birds. Despite recent progress,
A Beginner's Guide to Electricity This guide for consumers and students explains all about volts, amps and watts and how they apply to home appliances and circuits. The equations are really quite simple, and you'll find some examples on how to apply them to home appliances.©...
I understand why the spring has maximum stretch right before the block moves. I don't get why we use this value. Because when the block starts moving this will move by dx, this causes a compression of dx in the spring. Therefore the deflection when the block moves should ...
6. Adoption of order ahead and delivery (where permitted) will continue to grow. While ecommerce has become a major trend for dispensaries since the pandemic, traditional brick-and-mortar retail shopping in-store remains by far the preference for consumers on 420. Dispensaries that offer both op...