Acceleration is defined as the rate of change for which characteristic? position time displacement velocity
Which of these best describe the energy transformation that occur to generate electricity from wind energy
A ground state hydrogen atom absorbs a photon of light having a wavelength of 94.92 nm. it then gives off a photon having a wavelength of 4.050 × 103 nm. what is the final state of the hydrogen atom? values for physical constants can be found here.
A car travels up a hill at a constant speed of 40 km/h and returns down the hill at a constant speed of 60 km/h. calculate the average speed for the round trip.
A disk-shaped merry-go-round of radius 3.16 m and mass 147 kg rotates freely with an angular speed of 0.724 rev/s. a 52.3-kg person running tangential to the rim of the merry-go-round at 3.38 m/s jumps onto its rim and holds on. before jumping on the merry-go-round, the person was moving in the same direction as […]
In a video game, a flying coconut moves at a constant velocity of 20 meters/second. The coconut hits an obstacle and moves in the opposite direction with the constant velocity of 10 meters/second. What’s the change in velocity of the coconut? A. -30 m/s B. -10 m/s C. 10 m/s D. 30 m/s
A rightward force of 302 n is applied to a 28.6 kg crate to accelerate it across the floor. thye coefficient of friction between the crate and the floor is 0.750. determine the acceleration
An object has a position given by r⃗ = [2.0 m + (3.00 m/s)t] i^ + [3.0m−(4.00 m/s2)t2] j^, where all quantities are in si units. what is the magnitude of the acceleration of the object at time t = 2.00 s
An automobile engine slows down from 3000 rpm to 900 rpm in 3.0 s.(a) calculate its angular acceleration, assumed constant.rad/s2(b) calculate the total number of revolutions the engine makes in this time.rev 0
A light-rail commuter train accelerates at a rate of 1.55 m/s2. how long (in s) does it take to reach its top speed of 80.0 km/h, starting from rest?
