Answer:
ΔV = 2 10¹ V
Explanation:
The calculation of the uncertainty or error in an expression is given by
ΔV = |Δi| + |ΔR |
V = i R
let's make the derivatives
= R
= i
we substitute
ΔV = R | Δi | + i | ΔR |
in the exercise give the values
i = (5.9 ± 0.4) A
R = (42.7 ± 0.6) Ω
we calculate
ΔV = 42.7 0.4 + 5.9 0.6
ΔV = 20.6 V
ΔV = 2 10¹ V
the voltage is
V = i R
V = 5.9 42.7
V = 251.9 V
the result is
V = (25 ± 2) 10¹ V
<span>____.
a. 20 drops to 4 cups
please move to maths group
</span>
Answer:
a. All the laboratory equipment given are very basic equipment used in all the laboratories. Name of each equipment is as follows:
- V refers to the tape measure.
- W refers to dropper.
- X refers to an inoculating loop.
- Y refers to a stopwatch.
- Z refers to the microscope.
b. Use of each laboratory equipment identified is:
- Tape measures (V) is used to measure the length of objects or distance in a laboratory.
- Dropper (W) is used to measure unit of drop required to dispensed as one drop or several drops in any experiment.
- Inoculating loop (X) is used by microbiologists to cultivate microbes on plates and retrieving an inoculum from a culture of microorganisms.
- Stopwatch (Y) is used to measure the time of any experiment.
- Microscope (Z) is used to magnify an object to look at it in detail.
The correct answer is A=V-U/T
A rocket is attached to a person in a sled with a combined mass of 79 kg. The sled is launched with 358 N of thrust up a frictionless icy hill sloped at 17.4° from the horizontal. The magnitude of acceleration of the sled while it travels up the hill is 1.60
F net = ma
where
F net = net force
m = mass
a = acceleration
F (thrust) - mg sin (theta) = ma
358 - (79)* 9.8 * sin(17.4) = 79 * a
acceleration = 358 - (79)* 9.8 * sin(17.4) / 79
= 1.60
To learn more about acceleration here :
brainly.com/question/2303856
#SPJ1