Answer:
a=2.378 m/s^2
Explanation:
a=Δv/Δt------eq(1)
Δv=Vf-Vi=120 km/h-0 km/h=120 km/h
or Δv=33.3 m/sec
or time=t=14s
putting values in eq(1)
a=33.3/14
a=2.378 m/s^2
<span>Every planet with an atmosphere has clouds. That includes the moon.</span>
Answer:
Acceleration is the rate of change in velocity. Momentum is the mass times the velocity. So if you multiply the mass times the acceleration, you get the of change of momentum.
Answer:
Change in internal energy AU = 40 J
Explanation:
Given:
Amount of heat added = 70 J
Work done = 30 J
Find:
Change in internal energy AU
Computation:
The net thermal conductivity into a process less the net work performed by the system represents the shift in internal energy.
Change in internal energy AU = Q - W
Change in internal energy AU = 70 J - 30J
Change in internal energy AU = 40 J
Answer:
t = 20.96 seconds
Explanation:
given,
lightning strikes at = 4.5 mi( 23,760 ft)
air temperature =74.0°F
74.0°F = 23.3 °C
speed of the sound at 23.3 °C
V = 331.5 + 0.6 × T
V = 331.5 + 0.6 × 23.3
= 345.48 m/s
distance given = 4.5 mile
1 mile = 1609.4
4.5 mile = 4.5 × 1609.4 = 7242.3 m
time taken =
![t =\dfrac{d}{v}](https://tex.z-dn.net/?f=t%20%3D%5Cdfrac%7Bd%7D%7Bv%7D)
![t =\dfrac{7242.3}{345.48}](https://tex.z-dn.net/?f=t%20%3D%5Cdfrac%7B7242.3%7D%7B345.48%7D)
t = 20.96 seconds
hence, time taken by the sound to reach by the observer is 20.96 sec.