Một chất điểm dao động điều hòa trên trục x'x, có phương trình:x=2cos(5πt-π/4) (cm, s) xác định piên độ chu kì tần số pha pan đầu và chiều dài quỹ đạo của dao động

Why is alchemy not considered to be a science ?

(01.02 mc) nicole pushes her bike up a hill. overhead, the sun exerts a gravitational force on earth. which statement is true about the bike and earth? they both experience contact forces. they both experience non-contact forces. the bike experiences a non-contact force and earth experiences a contact force. the bike experiences a contact force and earth experiences a non-contact force. they both experience non-contact forces.

Much of the information taught in earth-space science would not be available if it weren’t for our remote sensing abilities. explain two ways our remote sensing strategies contribute to our knowledge of these topics.