What effect does the sun have on Earth's tides? A. The pull of the sun cancels the pull of the moon when they are on opposite sides of Earth, causing lower high tides. B. The pull of the sun combines with the pull of the moon when they form a right angle with Earth, causing very high tides. C. The pull of the sun cancels the pull of the moon when they form a right angle with Earth, causing very high tides. D. The pull of the sun combines with the pull of the moon when they are on the same side of Earth, causing very high tides.

As part of your daily workout, you lie on your back and push with your feet against a platform attached to two stiff springs arranged side by side so that they are parallel to each other. when you push the platform, you compress the springs. you do an amount of work of 79.0 j when you compress the springs a distance of 0.230 m from their uncompressed length. (a) what magnitude of force must you apply to hold the platform in this position? (b)how much additional work must you do to move the platform a distance 0.230 m farther? (c) what maximum force must you apply to move the platform a distance 0.230 m farther?