A) 140 degrees
First of all, we need to find the angular velocity of the Ferris wheel. We know that its period is
T = 32 s
So the angular velocity is
Assuming the wheel is moving at constant angular velocity, we can now calculate the angular displacement with respect to the initial position:
and substituting t = 75 seconds, we find
In degrees, it is
So, the new position is 140 degrees from the initial position at the top.
B) 2.7 m/s
The tangential speed, v, of a point at the egde of the wheel is given by
where we have
r = d/2 = (27 m)/2=13.5 m is the radius of the wheel
Substituting into the equation, we find
Show transcribed image text. Compare the work done by the electric field when the particle travels<span> from point W to point X to that </span>done<span> when the </span>particle travels<span> from point Z to point Y. ... Is the </span>work done<span> on the </span>particle<span> by the </span>electric field<span> positive, negative, or zero? Explain using force and displacement vectors.</span>
Answer:
1900 metres
Explanation:
Given that a train travels at a speed of 30 m/s. The train starts at an initial position of 1000 meters and travels for 30 seconds.
The parameters to be considered are:
Speed = 30 m/s
Time = 30 seconds
Speed = distance/time
Substitute the parameters into the formula
30 = distance / 30
Cross multiply
Distance = 30 × 30
Distance = 900 m
Since the train started from a position of 1000 m , the final position will be:
Final position = 1000 + 900
Final position = 1900 metres
In this equation
1 Cl2 + 3 F2---> 2 ClxFy
those coefficients are in MOLE (or molecule) ratios. BUT for gases at the same temp and pressure, they are also VOLUME ratios.. why? PV = nRT, V = nRT/P. if RT/P = constant.. V1/n1 = V2/n2 --> n1/n2 = V1/V2..make sense? mole ratios
= volume ratios
so.. what are x and y?
1 Cl2 + 3 F2---> 2 ClxFy
2 Cl's on the left.. x must = 1
6 F2's on the left. y must be 3
1 Cl2 + 3 F2---> 2 ClF3
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