A 23.0-kg file cabinet of is sliding down a frictionless ramp for a distance of 5.00 m as shown. Use g = 10.0 m/s2. Assuming the system is cabinet+earth+ramp, match the answers with questions. ΔK + ΔUg + ΔUsp + ΔEth + ΔEch = Wexternal What is the change in gravitational potential energy (ΔUg)? (Hint: what is Δy?)                                                                                              What is the change in thermal energy (ΔEth)?                                                                                              What is the change in kinetic energy (ΔK)? A. -230 J B. 0 J C. 1150 J D. 298 J E. -1150 J F. none of the given G. -298 J

A 2.11 kg cart moving along a horizontal track in the positive x direction has a changing force exerted on it. The force exerted on the cart is plotted in the graph shown. In the plot, Fmax has a value of 5.95 Newtons. Note that the friction between the cart and track is negligible. a.-Calculate the work done on the cart when it has reached a displacement of 21.3 cm along the track.  b.- If the cart starts from rest, calculate how fast the cart is going when it has reached a displacement of 21.3 cm along the track.

C @ 2 W S F2 (Figure 1) is the kinetic-energy graph for a 2.0 kg object moving along the x-axis. # 3 E D F3 $ 4 R F4 F % 5 T G F5 6 Y H F6 & 7 U COL * 8 J F8 9 K DELL O ww 20 < Part A P Determine the work done on the object during each of the four intervals AB, BC, CD, and DE Express your answers using one significant figure. Enter your answers numerically separated by a comma. WB WBC. WCD. WDE= Submit < Return to Assignment X Incorrect: Try Again: 5 attempts remaining F10 [ ? | W Previous Answers Request Answer F11 m IVO ΑΣΦ 1 F12 Provide Feedback ► Backspace Insert Print Screen Enter Delete Shift Ctrl Home Scroll Lock End Review | Constants PgUp → O Pause Break PgDn ? 7:09 PM 11/6/2023 + Num Lock 7 J 2 Home 4 1 LO 5 End

Four identical masses of 7.3 grams are placed at the corners of a square with a side length of d = 27 cm, as shown below. What is the gravitational potential energy of the system? d d