The temperature decreases as you go up.
Answer:
1.379 m/s2
Explanation:
F=ma
There is a negative force from the elevator...
F = (715 kg) (-9.81 m/s2)
F = -7014.15 N
Cable + elevator = 8000 N + (-7014.15 N)
F = 985.85 N
a = F/m
985.85 N/715 kg = 1.379 m/s2
Answer:
2.598×
Explanation:
The length of the contraction is given by
here
is length of the ruler at rest which is given as 12 inches
l is the length of the ruler in moving condition which is given as 6 inches c is the speed of the light and v is the velocity of the ruler.






Answer:
Step-by-step explanation:
<u>1. Find acceleration:</u>
<u>2. Find distance traveled:</u>
3. Find work done by friction:
(Work formula when angle between Force and Displacement vectors are 0°) 
Answer:
See the explanation below
Explanation:
To solve this problem we will take the definition of linear momentum, which tells us that momentum is equal to the product of mass by the velocity vector. Since velocity is a vector, we will take the right-hand movement as positive and the left-hand movement as negative, the left-hand members are taken as before the collision and the right-hand members as after the collision
ΣM1 = ΣM2
(m1*v1) + (m2*v1) = (m1*v2) + (m2*v2)
V1 = velocity before the collision [m/s]
V2 = velocity after the collision [m/s]
m1 and m2 = mass of the vehicles [kg]
Therefore:
(240*2.3) - (260*2.7) = - (240*2.9) + (260*2.1)
Resolving this arithmetic operation we will have:
720 - 702 = - 696 + 546
- 150 = - 150
We can see that before the crash and after the crash the momentum is preserved