A student releases a marble from the top of a 210cm ramp. The marble increases speed steadily and reaches the bottom of the ramp with a speed of
70cm/s. Determine all unknowns and answer the following question.
Si
210
cm/s
S
140
cm/s
Sf
70
cm/s 7
d =
unity
t =
unit
How long did the marble take to reach the bottom of the ramp?
unit

Pleas

Amass attached to a spring is displaced from its equilibrium position by 5cm and released. the system then oscillates in simple harmonic motion with a period of 1s. if that same mass–spring system is displaced from equilibrium by 10cm instead, what will its period be in this case? a mass attached to a spring is displaced from its equilibrium position by and released. the system then oscillates in simple harmonic motion with a period of . if that same mass–spring system is displaced from equilibrium by instead, what will its period be in this case? a) 0.5sb) 2sc) 1sd) 1.4s

Does heating a metal wire increase or decrease its electrical resistance? why?

Another word for electromagnetic energy is a. heat b. force c. matter d. radiation