Which wave types refract when crossing from one medium to another? sound waves electromagnetic, sound, and water waves electromagnetic waves water waves only electromagnetic and sound waves

Aperson gives a shopping cart an initial push along a horizontal floor to get it moving, and then lets go. the cart travels forward along the floor, gradually slowing as it moves. consider the horizontal force(s) on the cart while it is moving forward and slowing. which of the following statements is correct? (a) both a forward and a backward force are acting on the cart, but the forward force is larger. (b) only a forward force is acting which diminishes with time. (c) both a forward and a backward force are acting on the cart, but the backward force is larger. (d) only a backward force is acting, no forward force.

Acar travels 40m in 8 seconds find the car speed

What are the similarities & differences between a thermistor and a light dependent resistor in physics?