(Figure 1) is the kinetic-energy graph for a 2.0 kg object moving along the z-axis. ▼ Part A 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. D ΑΣΦ ?
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- Hello, Please help me complete the table using law of conservation of mechanical energy.(Figure 1) shows a rope with 15.0 N tension pulling a 2.0 kg physics textbook up a frictionless slope with angle . The book's speed after being pulled 2.0 m is 3.0 m/s. What is the angle ø? Figure Ar < 1 of 1 v₁ = 0 m/s This could be solved with Newton's laws and kinematics, but we will use the energy principle. How much work does tension do on the book as it moves 2.0 m? Express your answer with the appropriate units. ► View Available Hint(s) WT = Submit Part B W₁ = μà Submit Value How much work does the normal force do on the book as it moves 2.0 m? Express your answer with the appropriate units. ► View Available Hint(s) μÀ Units Value ? Units ? Activate Windows Go to Settings to activate WindowY A = 10 N 0 = 60° X 0 = 20° B = 14 N Calculate the following. Show all work (20 minutes) a) The magnitude and direction of A + B b) A• B с) Ах В
- An E. coli bacterium can be modeled as a 0.50-um-diameter sphere that has the density of water. Rotating flagella propel a bacterium through 40° C water with a force of 75 EN, where 1 fN=1 femtonewton = 10-15 N. Part A What is the bacterium's speed in μm/s? Express your answer in micrometers per second. ΨΕ ΑΣΦ 7.16 107 DMC Submit Previous Answers Request Answer X Incorrect; Try Again ? um/sPart A A spring of force constant 240.0 N/m and unstretched length 0.220 m is stretched by two forces, pulling in opposite directions at opposite ends of the spring, that increase to 15.0 N. How long will the spring now be? Express your answer in meters. V ΑΣφ m = 1 Submit Request Answer Part B How much work was required to stretch it that distance? Express your answer in joules.Susan's 13.0 kg baby brother Paul sits on a mat. Susan pulls the mat across the floor using a rope that is angled 30° above the floor. The tension is a constant 28.0 N and the coefficient of friction is 0.210. Part A Use work and energy to find Paul's speed after being pulled 2.90 m Express your answer with the appropriate units. 1.93 Submit μA m S ? Previous Answers Request Answer X Incorrect; Try Again; 26 attempts remaining
- Part A A child pulls a sled with constant speed pulling the rope at an angle of 30° to the horizontal and drags the sled for 100 m. The friction coefficient is 0.40. What work did the friction force do if the sled's mass is 5.1 kg? Express your answer with the appropriate units. W = 1624.2 J Ć ?A block 4-kg mass m located 7.0 m above the ground slid down on smooth inclind surface (35°) a. What is the speed of block when it reaches the bottom? b. How far does the block move on the incline smooth surface (15°) 4 kg Begin h d End 35° 150A process occurs in which a system's potential energy decreases while the system does work on the environment. Does the system's kinetic energy increase, decrease, or stay the same? Or is there not enough information to tell? Explain. Match the words in the left column to the appropriate blanks in the sentences on the right. positive negative zero unknown ‒‒‒‒‒‒‒‒‒‒ only the potential energy does the work the system does work on the environment Submit the mechanical energy does not change the change in potential energy may be greater as well as less than the work the system does on the environment the body cannot do more work than the change of its potential energy Request Answer The change in kinetic energy is because Reset Help