New e-bike (electric assist bicycle). i prop it up so that the back wheel can spin freely (its not touching the ground). i give it a push and watch it spin. then, at time t=0, when its angular velocity is 17.0 rad/s , i turn on the electric motor so that the wheel has a constant angular acceleration of 27.0 rad/s2 . then at time t = 2.40 s i turn the motor off. from then on, the wheel turns through an angle of 435 rad as it gradually slows to a stop, at constant angular deceleration.

Which of the following are used in an electrochemical cell? a. electrodes b. electrolyte c. terminals d. all of the above

When conducting an investigation to determine which type of fertilizer produces the most flowers on a plant, which variable would be graphed on the x-axis once you collected the data? a. type of fertilizer b. amount of flowers c. amount of water d. number of days that the plants grew

Ablock of mass m = 2.5 kg is attached to a spring with spring constant k = 740 n/m. it is initially at rest on an inclined plane that is at an angle of theta= 26 with respect to the horizontal, and the coefficient of kinetic friction between the block and the plane is uk = 0.17. in the initial position, where the spring is compressed by a distance of d = 0.16 m, the mass is at its lowest position and the spring is compressed the maximum amount. take the initial gravitational energy of the block as zero. the block's initial mechanical energy is 9.472 j.b. if the spring pushes the block up the incline, what distance l in meters will the block travel before coming to rest? the spring remains attached to both the block and the fixed wall throughout its motion.