Answer:
Explanation:
Acceleration is equal to the change in velocity over the change in time.
The initial velocity is 35.8 meters per second. The final velocity is 0 meters per second when the car comes to a complete stop. The time is 2.0 seconds.
Substitute the values into the formula.
Solve the numerator.
Divide.
The car's acceleration is <u>-17.9 meters per square second.</u> The acceleration is negative because the car was coming to a stop and slowing down.
Answer:
4.95 seconds
Explanation:
It is given that the speed of the cars are constant and not accelerating
The relative speed between the two cars will be the difference in their speeds
Converting to m/s
Time = Distance / Speed
Time it would take the faster car to cross the slower car is 4.95 seconds
<span>Energy is calculated by molecule dividing energy by mole by Avogadro's number (6.022*10^23)
941kJ=9.41*10^5 J
so energy by molecule
E= 9.41*10^5/6.022*10^23=1.563*10^-18 J
Wavelength (w) given by E=hc/w
where, E = energy
h = planks constant (6.6262 x 10-34 J·s)
c = speed of light (3 x 10^8 m/s )
So,
w= hc/E
= (6.6262*10^-34)*(3*10^8) /1.563*10^-18
= 127.2 Nm
Longest wavelength of radiation =127.2 Nm</span>
Answer:
light waves can travel in vacuum but sound waves require a medium to travel
also light waves are electromagnetic waves while sound waves are mechanical, light waves are transverse waves while sound waves are longitudinal waves
