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Anestetic [448]
3 years ago
12

A vector R is resolved into its components, Rx and Ry. If the ratio of is 2, what is the angle that the resultant makes with the

horizontal?

Physics
2 answers:
Umnica [9.8K]3 years ago
7 0

Answer: The angle formed will be 26.56° .

Explanation: Vector R is resolved in two components, which are R_x and R_y, the resultant R is given by:

R=\sqrt{R_x^2+R_y^2

From the diagram, the ratio of R_y\text{ and }R_x is given by the equation:

\tan\theta=\frac{R_y}{R_x}

We are given the ratio of R_x\text{ and }R_y which is 2, so ratio of R_y\text{ and }R_x will be \frac{1}{2}

\frac{R_y}{R_x}=\frac{1}{2}

Putting value in \tan\theta equation, we get:

\tan\theta =\frac{1}{2}\\\\\theta=\tan^{-1}(0.5)\\\\\theta=26.56^o

Artemon [7]3 years ago
6 0
The angle is 26.56 degrees
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5,000 meters

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DNA’s diameter is 0.000000002 meters. What is this measurement in scientific notation? a. 2.0 x 109 m
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Answer:

0.000000002 m=2.0*10⁻⁹ m

Explanation:

Scientific notation allows us to write very large or very small numbers in abbreviated form. This notation simply consists of multiplying by a power of base 10 with a positive or negative exponent.

A number written in scientific notation has the form:

a*10ⁿ

where:

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So to write the number 0.000000002 in scientific notation, the following steps are performed:

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So, you get: <u><em>0.000000002 m=2.0*10⁻⁹ m</em></u>

3 0
3 years ago
If the car went 30 km west in 25 min. and then 40 km east in 35 min., what would be its total displacement?
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The total displacement is 10 km.
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Why is random sampling and random assignment in experimental research important?
Hunter-Best [27]

So the result is not biased or affected in some way

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3 years ago
Light does not move infinitely fast but has a finite speed. We normally use ""c"" to indicate the speed of light in science. Wri
Ede4ka [16]

Answer:

6.71 × 10^8 mi/hr

Explanation:

Light is usually defined as an electromagnetic wave that is comprised of a definite wavelength. It is of both types, visible and invisible. The light emitted from a source usually travels at a speed of about 3 × 10^8 meter/sec. This speed of light is commonly represented by the letter 'C'.

To write it in the metric system, it has to be converted into miles/hour.

We know that,

1 minute = 60 seconds

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Now,

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= \frac{1.08 \times\ 10^{12} meter \times\ 1 km \times\ 1 miles}{1 hr \times\ 1000 meter \times\ 1.6 km}

= 6.71 × 10^8 mi/hr (miles/hour)

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