X-component of length 5 and a y-component of length 4. What is the angle of the vector?

1 answer:

4 0

The direction of the vector with respect to the x-axis
is the angle whose tangent is (4/5) .

Arctan(4/5) = 38.7° counterclockwise from the x-axis.

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On the New York seismogram, the first P wave was recorded at 9:01 UTC. UTC is the international standard on which most countries

nevsk [136]

What do you mean by "actually" ? ? ?

Do you mean what time was it in New York when the earthquake began ?
OR
Do you mean what time was it at the place where the earthquake occurred
when the earthquake began ?

New York is in the Eastern Time Zone. That's five (5) zones west of UTC.

If the quake occurred between November and March, during the time
when the US is on Standard time or "Winter" time, then the first P-wave
was recorded in New York at 4:01 AM EST that morning.

If the quake occurred between April and October, during the time when
the US is on Daylight Saving time or "Summer" time, when clocks are set
1 hour ahead, then the first P-wave was recorded there at 5:01 AM EDT
that morning.

We have no way to calculate what the time was in the place where the earthquake occurred, because the question gives no information
regarding the location of its epicenter. We would need to know
not only its time zone, but also the actual distance from New York,
so that we could estimate the length of time it took for the P-wave
to reach the seismograph there.

4 0

3 years ago

A heat engine extracts 42. 53 kj from the hot reservior and exhausts 17. 69 kj into the cold reservior. what is the work done?

ludmilkaskok [199]

The answer is 24.84kJ.

We apply the expression for the work done by the heat engine is,

$W=E_{i n}-E_{o u t}$ . Putting all given values in the equation we get the final answer.

What is heat engine?

A heat engine is a machine that uses heat to generate power. It draws heat from a reservoir, uses that heat to produce work, such as move a piston or lift weights, and then releases that heat energy into the sink.
We are given:The heat input is $E_{i n}=42.53 \mathrm{~kJ}$ . The heat output is $E_{o u t}=17.69 \mathrm{~kJ}$ .
The expression for the work done by the heat engine is, $W=E_{i n}-E_{o u t}$
Substituting the given values in the above expression, we will get $W =42.53 \mathrm{~kJ}-17.69 \mathrm{~kJ}$ =24.84kJ.
Thus, the work done by the heat engine is 24.84kJ.

To learn more about heat engine visit: brainly.com/question/15735984

#SPJ4

6 0

2 years ago

Match the term with the appropriate image

Tamiku [17]

First figure shows the object position

Second shows the image position

Third shows the focal length.

8 0

3 years ago

9. A wave on Beaver Dam Lake passes by two docks that are 40.0 m apart.

Kobotan [32]

Answers:

a) 10 m

b) time=1.6 s, frquency=0.625 Hz

c) 6.25 m/s

Explanation:

a) If there is a crest at each dock and another three crests between the two docks, and the wavelength $\lambda$ is the distance between to crests; this means we have $4\lambda$ in $40 m$ :