A quantity has a measured value of 8.4126. which number value has the uncertainty?

Answers

Answer 1

Answer: Heres my expert advice

In a measured value like "8.4126," the number value with the uncertainty is typically the last digit or the least significant digit. In this case, the number value with the uncertainty is "6." The uncertainty represents the potential variation or error associated with the measurement of the quantity.

So, for the measured value "8.4126," the uncertainty would be associated with the "6," and you might express it as ±0.0001 (if you consider it to be accurate to the thousandth's place) or ±0.1 (if you consider it to be accurate to the tenths place), depending on the level of precision and the measuring instrument used.

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If a force of 65 N is exerted on a 45 kg sofa and the sofa is moved 6.0 meters, how much work is done in moving the sofa? 17,550 J 171.990 J 390 J none of the above

Answers

Answer:

The answer to your question is: W = 390 J

Explanation:

Work is the transfer of energy when a body is moved from one place to another.

Data

Force = 65 N

mass = 45 kg

distance = 6 meters

work = ? J

Formula

W = F x d

Process

W = 65 N x 6 m

W = 390 J

Answer: 390 J

Explanation:

i got it right on my exam :D

Force is applied to an object and the object is moved over a distance in the same direction of the applied force" is the definition of (2 points)a. balanced force.
b. gravitational force.
c. power.
d. work

Answers

Answer:

The correct answer to your question is B. Gravitational force because the force is applied to one object as it is applied to the same direction.

Explanation:

its not work!!!

plz if you don"t know n answer to a question don"t answer it i could hurt others grade. brainly is for helping other not putting wrong answer and make the person get a bad grade

im just saying :)

Answer: IT IS NOT GRAVITATIONAL FORCE; I think it’s work

Explanation:

I put gravitational force and got it wrong

A graph of the motion of a pendulum shows that it swings from +5 centimeters to -5 centimeters for each cycle. What is the amplitude of the pendulum?

Answers

The amplitude of the pendulum is 5cm.

What is the amplitude?

Amplitude is the maximum displacement of the wave from its mean position upwards or downwards.

As the graph of the motion of pendulum swings from +5cm to -5cm for each cycle, the magnitude of peak amplitude of the pendulum is 5 centimeters.

Learn about amplitude.

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the peak amplitude of the pendulum is 5 centimeters, the peak to peak amplitude of the pendulum is 10 centimeters.

in this case, i think peak to peak amplitude makes more sense

Cucumbers are sold for 3.50 QAR per kilogram. If you purchase 0.7kg of cucumbers how much will it cost? a. 5.95QAR b. 4.20 QAR c. 2.80QAR d. 2.45QAR

Answers

Answer:

d. 2.45 QAR.

Explanation:

To calculate the cost of purchasing 0.7kg of cucumbers at a rate of 3.50 QAR per kilogram, we can use the formula:

Cost = Rate × Quantity

Here's how to calculate it:

1. Multiply the rate per kilogram (3.50 QAR) by the quantity (0.7kg):

- Cost = 3.50 QAR/kg × 0.7kg

2. Calculate the result:

- Cost = 2.45 QAR

Therefore, the cost of purchasing 0.7kg of cucumbers at a rate of 3.50 QAR per kilogram is 2.45 QAR.

Why can't alpha particles penetrate deeply into solids? Alpha particles have low mass. Alpha particles have high mass. Alpha particles have low velocity. Alpha particles have high velocity.

Answers

Alpha particles have both high mass and low velocity, but it would be the former that determines why they can't penetrate. An alpha particle is made of two protons and two neutrons, which is quite a large mass for a particle. This large mass keeps it from penetrating too deeply into anything, since it will essentially "get stuck" when it comes too near to another atom.
So the answer, I believe, is B. Alpha particles have high mass.

The answer is the Alpha Particles have low velocity

A 139 kg physics professor has fallen into the Grand Canyon. Luckily, he managed to grab a branch and is now hanging 89 m below the rim. A student (majoring in linguistics and physics) decides to perform a rescue/experiment using a nearby horse. After lowering a rope to her fallen hero and attaching the other end to the horse, the student measures how long it takes for the horse to pull the fallen physicist to the rim of the Grand Canyon. The acceleration of gravity is 9.8 m/s 2 . If the horse’s output power is truly 1 horsepower (746 W), and no energy is lost to friction, how long should the process take? Answer in units of s.

Answers

In order to lift the fat (306 lb) physics professor 89 meters up to
the rim, he'll need more potential energy, equal to

(mass) x (gravity) x (height) = (139 x 9.8 x 89) = 121,236 joules .

If the faithful horse delivers 1 constant horsepower = 746 watts,
AND if the cute-as-a-button student has instantly figured out a
way to keep the rope sliding around the edge without any friction,
then the soonest Prof. Tubby can arrive at the rim is

(121,236 joules) / (746 joules/sec) = 162.5 seconds .

Nowhere in this tense drama has the student needed her linguistics
skill yet, but I'll bet it comes in handy as she attempts gamely to
comprehend all of the various pleadings, prayers, and expletives
uttered by her heavy hero from the time he falls over the rim until
he's again lifted to it.

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