Why is stepping on a can considered a physical change?

What does it mean to have a velocity of zero?

What is the number of protons in the nucleus of an element called?

Look at the diagram showing resistance and flow of electrons. A top box labeled X contains 2 circles with plus signs and 2 circles with minus signs. A bottom box labeled Y contains 4 circles with minus signs and 8 circles with plus signs.

Suppose a wave carries 3 units of energy and has an amplitude value of 2. If you double the amplitude to 4, how many units of energy will the wave now carry? A. 3 B. 6 C. 9 D. 12 ... ?

A slice of pizza has 500 kcal. If we could burn the pizza and use all the heat to warm a 50-L container of cold water, what would be the approximate increase in the temperature of the water?

Which sequence of coefficients will balance the following equation Ca (s) O2 (g) 2CaO (s)

1.) how is climate different from weather 2.) How are desert plants adapted to their climate Describe the climate and give specific example's?

A bicycle takes 8 seconds to accelerate at a constant rate from rest to a speed of 4 m/s. If the mass of the bicycle and rider together is 85 kg, what is the net force acting on the bicycle?

How is Newton's Third Law important for snowboarding

What is the weight of a 250 g bag of sweets?