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3 years ago

10

A contour map has 14 concentric circles, each placed 1/2 centimeters apart. The map's scale indicates 1cm = 10 ft. What is the s

tructure, and what are its dimensions?

1 answer:

Sever21 [200]3 years ago

3 0

Answer:

B. A hill 70ft tall.

Explanation:

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How does the wavelength emitted by an object relate to its temperature?

OlgaM077 [116]

Explanation:

I haven't actually seen the answer I'm looking for but I think the answer is when temperatures are lower the wavelength is longer

8 0

3 years ago

To tugboats pull a disabled supertanker. Each tug exerts a constant force of 1.50•10^6 N, one at an angle 19.0° west of north, a

irina1246 [14]

Answer:

Work done by a tug boat, W = 1.735 x 10⁸ J

Explanation:

Given,

The of each tugboat, F = 1.5 x 10⁶ N

The angle of each tugboat forms with the resultant force, θ = 19°

The displacement of the supertanker, s = 710 m

The individual tugboat will be responsible for the displacement, d = 710/2

= 355 m

The displacement component in each tugboat direction = 355 · sin θ meter

Therefore, the work done by each tugboat is

W = F x S joules

Substituting the values in the above equation

W = 1.5 x 10⁶ x 355 · sin θ

= 1.735 x 10⁸ J

Hence, the work done by each tugboat is, W = 1.735 x 10⁸ J

6 0

3 years ago

Gravitational pull is determined by _____

strojnjashka [21]

mass is the correct answer

7 0

3 years ago

an object is placed 15.8 cm in front of a thin converging lens with an unknown focal length. if a real image forms behind the le

storchak [24]

<span>On what:

f (is the focal length of the lens) = ?
p (is the distance from the object to the lens) =15.8 cm
p' (is the distance from the image to the spherical lens) = 4.2 cm

</span><span>Using the Gaussian equation, to know where the object is situated (distance from the point).
</span>
$\frac{1}{f} = \frac{1}{p} + \frac{1}{p'}$
$\frac{1}{f} = \frac{1}{15.8} + \frac{1}{4.2}$
$\frac{1}{f} = \frac{2.1}{33.18} + \frac{7.9}{33.18}$
$\frac{1}{f} = \frac{10}{33.18}$
Product of extremes equals product of means:
$10*f = 1*33.18$
$10f = 33.18$
$f = \frac{33.18}{10}$
$\boxed{\boxed{f = 3.318\:cm}}\end{array}}\qquad\quad\checkmark$

6 0

4 years ago

Beginning 156 miles directly east of the city of Uniontown, a truck travels due south. If the truck is travelling at a speed of

timurjin [86]

Answer:

14.3

Explanation:

The distance s as a function of time can be written as:

$s(t) = \sqrt{156^{2} + (31t)^2}$

The rate of change is the derivative of d with respect to time:

$\frac{ds}{dt} =\frac{961t}{\sqrt{156^{2}+(31t)^{2}}}$

The time t when the track has been traveling for 81 miles is given by:

$81 = 31t\\ t = \frac{81}{31}$

Using t in the previous equation gives:

$\frac{ds}{dt}(\frac{81}{31} ) =\frac{2511}{\sqrt{156^{2}+81^{2}}}=14.3$

5 0

3 years ago