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AveGali [126]
3 years ago
5

QUICKKK I NEEEED HELP PLZ!!!!!!!!!!!!

Physics
1 answer:
avanturin [10]3 years ago
4 0
There would be martial law (just elaborate on the definition) and the population would go awry(elaborate on subject)
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A __________ score allows a researcher to compare scores across different scales.
cupoosta [38]
The correct answer should be C. standard

When you have standardization developed, then it is possible to compare scores across different scales and make sure that everything works relatively fine.
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3 years ago
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Brain surgery. Surgeons can remove brain tumors by using a cavitron ultrasonic surgical aspirator, which produces sound waves of
dmitriy555 [2]

Answer:\lambda =1.304\times 10^4\ m

Explanation:

Given

frequency of wave \nu =23\ kHz

We know velocity is given by

v=\nu \times \lambda

where \lambda=wavelength

\lambda =\frac{velocity}{\nu }

\lambda =\frac{3\times 10^8}{23\times 10^3}

\lambda =1.304\times 10^4\ m

7 0
3 years ago
if you throw a ball straight up into the air at a velocity of 15 m/s you want to know how high above your hand the ball will be
xxMikexx [17]

Answer:

 Assuming that gravity has not caused the ball to start falling then after 2.5 seconds the ball will be 37.5 meters in the air

Explanation:

The ball travels 15 meters every second so for 2 seconds we would multiply 15*2=30. We have 2.5 seconds so to calculate the time traveled in half a second we would divide 15/2=7.5

Then we add 30+7.5= 37.5 meters

4 0
3 years ago
Which nasa program of unmanned probes, which is a synonym for an innovator, were the first to visit the outer planets and the fi
aksik [14]
The synonym for innovator and a NASA program for unmanned probes is Pioneer. Pioneer 10, launched in 1972. and Pioneer 11 launched in 1973. were the first probes that visited the outer planets and went beyond Pluto, Kuiper belt and into interstellar space. They both carry the gold-anodized aluminum plaque with naked human male and female and a map to Earth, designed by Carl Sagan, in case they are found by an extraterrestrial civilization outside the Solar system. 
6 0
3 years ago
Please help on Problem 2.5 <br><br> I also need a short (or detailed) explanation. Thank you !!
NNADVOKAT [17]

Explanation:

Problem 2.5, mixing dough.

Please note dimensional units and standard formulas for energies.

Input:

Electrical energy = VIT = 110 V * 1.5 A * 5 min. * 60 s/min = 49500 joules = 49.5 kJ

Output:

Warming of dough = mCΔT = 1 kg  * 4.2 kJ/(kg*K) * 5 deg.K = 21 kJ

Dissipation of energy = remainder of input energy = (49.5-21) kJ = 28.5 kJ

Fraction of energy converted to energy of dough = 21 kJ / 49.5 kJ

= forty-two percent (to the nearest percent)

The last item, dissipation of energy could be attributed to:

1. Loss in efficiency of mixer in the form of mechanical friction, heating up due to resistance of motor circuit, etc.

2. Loss in mechanical mixing of dough due to friction between mixer paddle and dough in the form of heat, part of which stays with dough (thus heating up of dough), and the remainder heats up the dough container, loss of heat to environment, air, heat of vaporization of water content of dough, etc.

8 0
3 years ago
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