Answer:
PART A)
External force will be 75 N
PART B)
distance moved will be 1.125 m
Explanation:
PART A)
Given that net force on the mower is
now we also know that friction force due to ground is given as
now we have
so external force will be 75 N
PART B)
deceleration due to friction when external force is removed from it
now we can find the distance by kinematics
so the distance moved will be 1.125 m
Answer:
current in series is 1.33 mA
current in parallel is 5.48 mA
Explanation:
given data
voltage = 8 V
resistors R1 = 2.5 kilo ohms
resistors R2 = 3.5 kilo ohms
to given data
current flow
solution
current flow in series is express as
current = voltage / resistor
put here all value
current = 8 / (2.5 + 3.5)
current = 8 / 6
current = 1.33 mA
and
current flow in parallel is express as
current = voltage / resistor
put here all value
current = 8 / (1/ (1/2.5 + 1/3.5))
current = 8 / 1.45
current = 5.48 mA
Answer:
(3) 3.2 × 10–19 C
Explanation:
The charge of a subatomic particle can only be an integer multiple of the fundamental charge, which is
So, let's analyze the 4 options:
(1) 5.0 × 10–20 C
--> not an integer number
(2) 8.0 × 10–20 C
--> not an integer number
(3) 3.2 × 10–19 C
--> integer number
(4) 5.0 × 10–19 C
--> not an integer number
So, the only option which is correct is (3).
THE DOPPLER EFFECT. Anyways, it would have a higher whistle as it approaches you, when it gets to you it only gets quieter because it leaves after. Think of a motorcycle going by, its loud coming to you then as it passes it gets quieter.
A scientific control: Is an experiment or observation designed to minimize the effects of variables other than the independent variable. This increases the reliability of the results, often through a comparison between control measurements and the other measurements.<span />