Ablock is attached to the end of a horizontal ideal spring and rests on a frictionless surface. the other end of the spring is attached to a wall. the block is pulled away from the spring’s unstrained position by a distance x0 = 0.050 m and released from rest. the period of the subsequent periodic motion of the block is 0.64 s. at what distance from the unstrained position is the speed of the block equal to 0.30 m/s?

Solar cell a produces 100 joules of energy, when a light source is shown on it for 3 minutes. solar cell b produces 200 joules of energy when the same light source is shown on it for 5 minutes. which solar cell works better? a) solar cell b, because it produces more energy. b) solar cell b, because it generates more power. c) solar cell a, because it produces energy quicker. d) solar cell a, because it generates a greater wattage. eliminate

Aparticle initially moving east with a speed of 20.0 m/s, experiences an acceleration of 3.95 m/s, north for a time of 8.00 s. what was the speed of the particle after this acceleration, in units of m/s? give the answer as a positive number.

Choose all the answers that apply. our solar system: is in a spiral galaxy no longer includes pluto is made mostly of empty space is in the andromeda galaxy is the only known system that supports life