Answer: 52.94
Step-by-step explanation:
Length of train A = 480m
Tunnel length = 1320m
Time taken to cross tunnel = 2 mins = 120sec
Length of train B = 420m
Train B is slower than train A
Difference between their speed = 18km/hr
18km/hr = (18×1000)/3600 = 5m/s
Speed of train A :
Speed = distance / time
Speed = 1320 / 120 = 11m/s
Therefore, speed of train B :
(11 - 5)m/s = 6m/s
Relative speed of the two trains is therefore;
(Speed of A + speed of B)
Note : they are moving in opposite direction
( 11 + 6)m/s = 17m/s
Therefore time taken to cross each other :
(Sum of the length of both trains / relative speed of the trains)
Time taken = (480m + 420m) / (17m/s)
Time taken = 900m / 17m/s
Time taken = 52.94s
Yeah its D i just checked
Answer:
Step-by-step explanation:
I assume that the last question should read "cosE"
Answer:
<h2>A) Population A has a high water potential and loss due to transpiration because of the increased humidity.</h2>
Step-by-step explanation:
Notice that the hypothesis is that relative humidity affects the transpiration of the body. So, in order to prove such hypothesis, we need to find enough evidence about water loss due to higher humidity. Knowing the relative humidity as the relation between water vapor and the pressure of it.
Therefore, the right answer is A, because we need to prove that a high water potential and loss due to transpitation happens because of the increased humidity.
Answer:
C. Sales tax
Step-by-step explanation:
FICA taxes are payroll taxes which get deducted from your payroll as social security tax and medicare tax. Income tax is another tax which is withheld from you earnings as well.
Sales tax is not withheld from your earnings even if you collected the sales tax as a retailer. It is a liability until you submit all of the related tax to the government.
