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4 years ago

Which quantity best describes this description? Justin walks at 3 miles per hour north, and then speeds up to 4 miles per hour.

1 answer:

4 0

Personally, I agree with your answer, namely that the likely-intended event happening here is one of acceleration. Having said that, I also want to add: it pains me to see this type of wording because, clearly, it is vague and only invites confusion of the type you are talking about.

Good luck!

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Think about routine tasks that astronauts might need to do inside and outside a

xz_007 [3.2K]

<h3><u><em>Answer:</em></u></h3><h3><u><em>Ok, here we go...</em></u></h3><h3><u><em>Explanation:</em></u></h3><h3><u><em>Astronauts perform many tasks as they orbit Earth. The space station is designed to be a permanent orbiting research facility. Its major purpose is to perform world-class science and research that only a microgravity environment can provide. The station crew spends their day working on science experiments that require their input, as well as monitoring those that are controlled from the ground. They also take part in medical experiments to determine how well their bodies are adjusting to living in microgravity for long periods of time.</em></u></h3><h3><u><em></em></u></h3><h3><u><em>Working on the space station also means ensuring the maintenance and health of the orbiting platform. Crew members are constantly checking support systems and cleaning filters, updating computer equipment: doing many of the things homeowners must do to ensure their largest investment stays in good shape. Similarly, the Mission Control Center constantly monitors the space station and sends messages each day through voice or email with new instructions or plans to assist the crew members in their daily routines.</em></u></h3><h3><u><em></em></u></h3>

from the NASA website, COPYRIGHT Jun 8, 2015

7 0

3 years ago

In a simple series circuit, why does the bulb light up when you close the switch

photoshop1234 [79]

<span>closing the switch completes the circuit</span>

8 0

4 years ago

A new record for running the stairs of the Empire State Building were set on February 4, 2003. The 86 flights, with a total of 1

Roman55 [17]

Answer:

Power = 377.35 W or Power = 0.5065 hp

Explanation:

Given:

Number of steps, n = 1576

height of each step, h = 0.20 m

Total height achieved, H = nh = 1576 × 0.20 = 315.2 m

Mass of the runner, M = 70.0 kg

Total time taken, t = 9 minutes 33 seconds = (9 × 60) + 33 = 573 seconds

Now, the potential energy gained by the runner,

E = MgH

where, g is the acceleration due to the gravity

on substituting the values in the above formula, we get

E = 70 × 9.8 × 315.2

E = 216227.2 J

also,

Energy = Power × time

therefore,

Power = Energy/time

Power = 216227.2 J / 573

Power = 377.35 W

Now,

745 watt = 1 hp

1 watt = 1/745 hp

thus,

Power = 377.35 W = 337.35 × (1/745) hp

Power = 0.5065 hp

4 0

3 years ago

A device that has the capacity to receive and store electrical energy is a(n)

sergeinik [125]

The answer to your question is capacitor :)

6 0

3 years ago

Read 2 more answers

Unpolarized light with intensity I0I0I_0 is incident on an ideal polarizing filter. The emerging light strikes a second ideal po

Montano1993 [528]

Answer:

A) I = Io 0.578, B) he light that leaves the polarized is completely polarized, being perpendicular to the axis of the second filter

Explanation:

A) Light passing through a polarizer must comply with the / bad law

I = Io cos2 tea

Where is at the angle of the polarizer and incident light

I = Io cos2 45

I = Io 0.578

Therefore the beam intensity is 0.578 of the incident intensity

.B) the light that leaves the polarized is completely polarized, being perpendicular to the axis of the second filter

3 0

4 years ago