Which of the following can indicate that a chemical change has occurred? A
burning
B
color change
C
light is emitted
D
a change in smell or taste
E
temperature change

Astudent pushes on a 20.0 kg box with a force of 50 n at an angle of 30° below the horizontal. the box accelerates at a rate of 0.5 m/s2 across a horizontal floor. what is the value of the normal force on the box? 200 n 243 n 156 n 225 n

Which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?

Acoil suspended freely, points in some direction when no current is passed through it . can you tell what will happen when a current is passed though it?