<span>the mechanical advantage of a pulley is 1.0
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1.
Answer:
Part a)

Part b)

Explanation:
Part a)
Length of the rod is 1.60 m
diameter = 0.550 cm
now if the current in the ammeter is given as

V = 17.0 volts
now we will have


R = 0.91 ohm
now we know that



Part b)
Now at higher temperature we have


R = 0.98 ohm
now we know that



so we will have



2.
Answer:
Part a)

Part b)

Explanation:
Part a)
As we know that current density is defined as

now we have

Now we have


so we will have

Part b)
now we have

so we have


so we have


Answer:
42 grams
Explanation:
you multiply the value by 1000 to get your answer
Answer:
The acceleration is 11.25 km/hr
Explanation:
Divide the velocity over time to find the acceleration. The bus is accelerating 11.25 km/hr per second in the range of 8 seconds
Answer:
Radius = 3.96m
Explanation:
In a cyclotron motion, the radius of a charged particle path in a magnetic feild is given by:
r = mv/qB
Where r = radius
m = mass of particle= 9.1×10^-31kg
q = charged electron = 1.6×10^-19C
B = magnetic feid = 7.65×10^6T
V = velocity = 7.65×10^6
r = (9.1×10^-31)×(7.65×10^6) / (1.6×10^-19)(1.10 ×10^-5)
r = (6.9615×10^-24)/(1.76 ×10^-24)
r = 3.96m