Answer:
3 m/s east
Explanation:
The velocity of the car is given by:
![v=\frac{d}{t}](https://tex.z-dn.net/?f=v%3D%5Cfrac%7Bd%7D%7Bt%7D)
where
d is the displacement
t is the time taken
The displacement of the car does not depend on the path of the car, but just on it the difference between its final position and its starting position, so it is equal to 15 metres east. The time taken is 5 seconds, therefore the velocity is equal to
![v=\frac{15 m}{5 s}=3 m/s](https://tex.z-dn.net/?f=v%3D%5Cfrac%7B15%20m%7D%7B5%20s%7D%3D3%20m%2Fs)
and the direction is east.
Answer:
1) force = 8.4 N
2) acceleration = 1 m/s^-2
Explanation:
I've attached the working
Answer:
The pressure will increase
Explanation:
Gay-
Lussac's Law states that the pressure of a
given mass of gas is directly proportional to the
absolute temperature of the gas, provided
volume is kept constant.
<span>Carnot cycle efficiency = work done/heat supplied = (Th - Tc)/Th
where, Th is temperature of hot reservoir and Tc is temperature of cold reservoir.
we have given the values as Heat supplied = 1.3 MJ or 1300 KJ, Th = 427 degree C and Tc = 90 degree C.
converting degree Celsius to kelvin temperatures, Th = 427 + 273 = 700 K
Tc = 90 +273 = 363
solving equations, (700 - 363)/700 = work done / 1300
work done = 625.86 KJ i.e. 0.626 MJ work is done .</span>