The forces shown in theforce vs. time diagramin Figure P6.17 act on a1.5-kg particle. Find(a) the impulse for theinterval from t 5 0 to t 53.0 s and (b) the impulsefor the interval from t 50 to t 5 5.0 s. If the forces act on a 1.5-kg particle that isinitially at rest, find the particle’s speed (c) at t 5 3.0 sand (d) at t 5 5.0 s

Plzz worth 10 ! which statement about energy transformations is not true? a all forms of energy can be transformed into thermal b energy is never destroyed or created during transformations c potential chemical energy always transforms into kinetic d some thermal energy is always released during a transformation

Acar travels along a highway with a velocity of 24 m/s, west. the car exits the highway; and 4.0 s later, its instantaneous velocity is 16 m/s, 45° north of west. what is the magnitude of the average acceleration of the car during the four-second interval?

The membrane surrounding a living cell consists of an inner and an outer wall that are separated by a small space. assume that the membrane acts like a parallel plate capacitor in which the effective charge density on the inner and outer walls has a magnitude of 7.0 × 10-6 c/m2. (a) what is the magnitude of the electric field within the cell membrane? (b) find the magnitude of the electric force that would be exerted on a potassium ion (k+; charge = +e) placed inside the membrane.