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BlackZzzverrR [31]
2 years ago
6

A convex mirror has a focal length of -13.0 cm. When you place a 6.00 cm tall pencil 60.0 cm in front of that mirror, what is th

e location of the pencil's image?
Physics
1 answer:
wlad13 [49]2 years ago
6 0

The location of the pencil's image is =16.6cm

<h3>Calculation of image location</h3>

The focal length of the convex mirror (f)= -13.0 cm

The object distance (u) = 60cm

The image distance (v) = xcm

Using the formula,1/f= 1/v + 1/u

Make 1/v the subject of formula,

1/v = 1/f -1/u

1/v = 1/13 - 1/60

1/v = 60-13/780

1/v = 47/780

V = 780/47

V = 16.6 cm

Therefore, he location of the pencil's image is = 16.6cm

Learn more about mirror here:

brainly.com/question/13164847

#SPJ1

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Calculate the equivalent of 20 degrees Celsius in degrees Fahrenheit and Kelvin.
alekssr [168]

Answer:

68 °F, 293.15 K

Explanation:

Fahrenheit, Kelvin and Celsius are the different scales of temperature in which temperature is measured.

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The conversion of T( °C) to T(K) is shown below:

T(K) = T( °C) + 273.15  

So,  

<u>T = (20 + 273.15) K = 293.15 K </u>

The conversion of T( °C) to T(F) is shown below:

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So,

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3 years ago
A stationary speed gun emits a microwave beam at 2.10*10^10Hz. It reflects off a car and returns 1030 Hz higher. What is the spe
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Answer: V = 15 m/s

Explanation:

As  stationary speed gun emits a microwave beam at 2.10*10^10Hz. It reflects off a car and returns 1030 Hz higher. The observed frequency the car will be experiencing will be addition of the two frequency. That is,

F = 2.1 × 10^10 + 1030 = 2.100000103×10^10Hz

Using doppler effect formula

F = C/ ( C - V) × f

Where

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f = source frequency

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Substitute all the parameters into the formula

2.100000103×10^10 = 3×10^8/(3×10^8 -V) × 2.1×10^10

2.100000103×10^10/2.1×10^10 = 3×108/(3×10^8 - V)

1.000000049 = 3×10^8/(3×10^8 - V)

Cross multiply

300000014.7 - 1.000000049V = 3×10^8

Collect the like terms

1.000000049V = 14.71429

Make V the subject of formula

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3 years ago
A space station in the shape of a 100 m-diameter (50m radius) wheel is spinning so as to impart a linear tangential speed of 22.
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Answer:

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given data

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solution

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solve it

v2 = \sqrt{2 } × 22.1

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