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?

Agas expands from an initial volume of 0.040 m^3 and an initial pressure of 210 kpa to a final volume of 0.065 m^3 while its temperature is kept constant. how much work is done by the system?

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final

1. a camcorder has a power rating of 19 watts. if the output voltage from its battery is 7 volts, what current does it use?answer units 2. a 1.5m wire carries a 6 a current when a potential difference of 57 v is applied. what is the resistance of the wire? yourunits 3. a clothes dryer uses about 2 amps of current from a 240 volt line. how much power does it use? yourunits 4.