Q/4. The velocity of a bicycle is changed from - 1.2 m/s to -6.5 m/s during 25 min. What is its acceleration?
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5. Suppose that the bicycle in item (4) has an average acceleration of:
4.7 x 10^-3 m/s2
a. How much does its speed change after 5.0 min?
b. If the treadmill's initial speed is 1.7 m/s, what will its final speed be?

Two large, flat, horizontally oriented plates are parallel to each other, a distance d apart. half way betwween the two plates the electric field has magnitude e. if the separation of the plates is reduced to d/2 what is the magnitude of the electric field half way between the plates?

The discovery that the universe appears to be expanding led to a widely accepted theory called a.) the big bang theory b.) the doppler effect c.) hubble’s law d.) solar nebular theory e.) the seyfert theory

The speed of sound in ice, water, and steam is shown. what best explains the speed of sound in different states of matter? sound travels fastest in ice because energy is easier to transfer when the molecules are close together. sound travels slowest in steam because the sound has to move around the gas molecules that are far apart. sound travels fastest in ice because the temperature of solids is always greater, so the heat transfers the sound energy. sound travels slowest in steam because the pressure is so great the sound cannot travel though the steam particles.