All categories

3 years ago

Which of the following best describes this Image?

Physics

2 answers:

Orlov [11]3 years ago

7 0

Answer: 4. Good accuracy

Explanation: Considering the center red dot to be the target and the dark dots to be the patch of the attempted targets.

The given figure has all the three attempts close enough to the target on the penultimate circular white patch, therefore we can say that the figure defines a good accuracy.

Accuracy is the degree of closeness to the targeted value (or spot, as here the case is) of an attempt (or a series of attempts) made.

Precision is defined as the degree of closeness of a series of attempts made i.e. the attempts taken must be close to each other having lesser deviation be it far from the target or closer to the target it does not matters.

ratelena [41]3 years ago

5 0

Good precision because he is hitting the same spot 3 times but we don't know if he is accurate. SO the answer is 2

You might be interested in

A leaky 10-kg bucket is lifted from the ground to a height of 16 m at a constant speed with a rope that weighs 0.7 kg/m. initial

IrinaVladis [17]

$\displaystyle W =\lim_{n\to\infty}{\sum_{i=0}^{n}{(678.16 - 36.26\;x_i)\cdot\dfrac{16}{n}}}$ .

<h3>Explanation</h3>

The mass comes in three parts:

the mass of the rope,
the mass of the water in the leaky bucket, and
the mass of the bucket.

Both the mass of the rope $m_\text{rope}$ and the mass of the water in the bucket $m_\text{water}$ varies with the height $x$ of the bucket. Express the two masses as a function of $x$ :

$m_\text{rope} = 0.7\;(16 - x)$ ,

The water in the bucket behaves like yet another rope of density $48 \;\text{kg}/ 16 \;\text{m}= 3.0\;\text{kg}\cdot\text{m}^{-1}$ . The mass of the water left in the bucket at height $x$ will be

$m_\text{water} = 3.0\;(16 - x)$ .

The mass of the bucket is $10\;\text{kg}$ . Combining the three:

$m(x) = m_\text{rope}(x) + m_\text{water}(x) + m_\text{bucket} \\\phantom{m(x)} = 0.7\;(16-x) + 3.0\;(16 - x) + 10\\\phantom{m(x)} = 69.2 - 3.7\;x$ .

Weight of the bucket at height $x$ :

$F_\text{weight}(x) = m(x)\cdot g = 9.8\;(69.2 - 3.7\;x) = 678.16 - 36.26\;x$ .

The bucket moves upward at a constant speed. As a result,

$F(x) = W(x) = 678.16 - 36.26\;x$ .

Express the work required as a definite integral:

$\displaystyle W = \int_{0}^{16}{F(x) \cdot dx} = \int_{0}^{16}{(678.16 - 36.26\;x)\cdot dx}$ .

Rewrite the definite integral as a Riemann Sum:

$\displaystyle W = \int_{0}^{16}{(678.16 - 36.26\;x)\cdot dx} \\\phantom{W}= \lim_{n\to\infty}{\sum_{i=0}^{n}{(678.16 - 36.26\;x_i)\cdot\frac{16-0}{n}}}\\\phantom{W} = \lim_{n\to\infty}{\sum_{i=0}^{n}{(678.16 - 36.26\;x_i)\cdot\frac{16}{n}}}$ .

5 0

3 years ago

At which position would the electric force be the greatest?

Alenkasestr [34]

I would say at 4 because it's closer to the middle of both of the power source

7 0

4 years ago

Read 2 more answers

Mass of 25 kg and a KE of 450 J.

anyanavicka [17]

Answer:

6m/s

Explanation:

8 0

3 years ago

Cherise sets identical magnetic carts on two tracks. At the end of each track is a blue magnet that cannot move. Cherise can mov

Colt1911 [192]

Answer:

it's d

Explanation:

7 0

3 years ago

The first formal laboratory for research in psychology was established by B.F. skinner

guajiro [1.7K]

False, it was Wilhelm Wundt that founded the first formal laboratory for research in psychological studies.

*** B.F Skinner is known for inventing the operant conditioning chamber. ***

8 0

3 years ago