The voltage between the cathode and the screen of a television set is 30 kv. if we assume a speed of zero for an electron as it leaves the cathode, what is its speed (m/s) just before it hits the screen? 1.48.7 x 10 2.23x 10 3. 10.2x 10 4.5.2x 105 5. 16.2x 10

Ablock of mass m slides on a horizontal frictionless table with an initial speed v0 . it then compresses a spring of force constant k and is brought to rest. the acceleration of gravity is 9.8 m/s2. how much is the spring compressed x from its natural length? 1) x = v0*sqrt(k/(mg)) 2) x=v0*sqrt(m/k) 3) x=v0*((mk)/g) 4) x=v0*sqrt(k/m) 5) x=v0*(m/kg) 6) x=v0*sqrt((mg)/k) 7) x=(v0)^2/(2g) 8) x=v0*(k/(mg)) 9) x=(v0)^2/(2m) 10) x=v0*((mg)/k)