15. How mh energy does a 850W microwave transfer reheating a meal for 30s?

The earth exerts a gravitational force of 500 n on amy. what is amy’s mass in kg?

What is reflection, what is refraction, and what is diffraction. what some similarities or differences between the three.

Veronica’s velocity was measured as 4.3 m/s. she displaced 20 meters in 4.7 seconds. which piece of information is missing for the correct calculation of velocity? the starting point the direction the end point the time per meter