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uysha [10]
3 years ago
10

2. Using a giant screw, a crew does 650 J of work to drill a hole into a rock.

Physics
2 answers:
WINSTONCH [101]3 years ago
3 0
Yeah un jsjsjsjjsos isnsisoowam
otez555 [7]3 years ago
3 0

Answer:

42,250

Explanation:

It goes inside=

Displacemt

It does work=

Work done

To find efficiency of jule we do=

Dicplacement × Work done

650 × 65

42,250

Please mark me as a brainlist

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Which of the following has the most momentum? proton (m=1.67 x 10-27 kg) moving at 2.0 x 104 m/s,an electron (m=9.11 x 10-31 kg)
Tom [10]

Answer:

The North American tectonic plate.

Explanation:

recall the formula for momentum: p = m * v

the subatomic particles have very small masses while high speeds, so the product results in values with negative exponents in scientific notation.

Negative exponents also result for the house fly when converting mg into kg (10^-6).

The positive exponents in scientific notation for the momentum come for the gigantic mass of the continental plate which exceeds the negative exponents contributed by the small velocity.

5 0
2 years ago
PLZ HELP!!WILL MARK THE BRAINLIEST!!The diagram shows a chromosome pair for an offspring.Which best describes the inheritance of
Dmitrij [34]

Answer:

The offspring is homozygous for eye color

Explanation: I had this question on my test and this was the answer, i hope this helps :)

6 0
3 years ago
Read 2 more answers
A 0.20-kg block rests on a frictionless level surface and is attached to a horizontally aligned spring with a spring constant of
solmaris [256]

Answer:

0.57 ms^{-1}

Explanation:

k = spring constant of the spring = 40 Nm⁻¹

A = amplitude of the simple harmonic motion = 4 cm = 0.04 m

m = mass of the block attached to spring = 0.20 kg

w = angular frequency of the simple harmonic motion

Angular frequency of the simple harmonic motion is given as w = \sqrt{\frac{k}{m} } \\w = \sqrt{\frac{40}{0.20} }\\w = 14.14 rads^{-1}

v = Speed of the block as it pass the equilibrium point

Speed of the block as it pass the equilibrium point is given as

v = A w\\v = (0.04) (14.14)\\v = 0.57 ms^{-1}

6 0
3 years ago
What type of wave is produced when you move one end of a horizontal spring up and down?
Volgvan
A. a transverse wave is produced
7 0
3 years ago
Object A weighs 750 N on earth. Object B weighs 750 N on Jupiter.
Katarina [22]

The object A has the greater mass compared to object B.

<u>Explanation: </u>

The weight of any object on any planet is the measurement of gravity’s influence acting on the mass of the object. So for Earth, the acceleration will be acting on the object A’s mass (m) in Earth leading to the weight of the object A as 750 N.

While the acceleration of Jupiter will be acting on the object B’s mass kept in Jupiter to attain the weight of 750 N. So, the mass of both the objects at their respective planet will vary depending on the acceleration of each planet. We can check this as below:

            \text { object A's weight }=\text { m of object A } \times \text { Acceleration of Earth}

So,

           750 \mathrm{N}=\text { m of object } A \times 9.8 \mathrm{m} / \mathrm{s}^{2}

Thus,

          \text { m of object } A=\frac{750}{9.8}=76.5 \mathrm{kg}

Similarly for object B,

          \text { Weight of object } B=m \text { of object } B \times \text { Acceleration due to gravity of Jupiter }

          750 = m \text { of object } B \times 24.79 \mathrm{m} / \mathrm{s}^{2}

Thus,

          \text { m of the object } B=\frac{750}{24.79}=30.25 \mathrm{kg}

Thus, the mass of object A is greater than the mass of object B.

5 0
3 years ago
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