Physics, 02.08.2019 08:30 kenisonpaigebosma

An object is 25.0 cm from the mirror, its height is 5.0 cm, and focal length is 8.0 cm. what is the distance from the image to the mirror? 0.085 cm 1.6 cm 9.8 cm 12 cm

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1.) Use the formula to solve -
   1/f = 1/do + 1/di; Where f = focal length; 1/do + 1/di
   1/f = 1/do + di
   1/8 = 1/25 + 1/?
   .125 = .04 + 1/di
.125 -.04 = 1/di (transferred .04 to the left side of the equation)
.085/1 = 1/di
.085di/.085 = 1/.085 (multiplied both sides by di and divided both sides by .085)
   di = 11.76 or 12
2.) Therefore, 12 cm is the distance from the image to the mirror

Answer from: cardonaalfredo

The equation needed to solve the problem is
$\frac{1}{f} = \frac{1}{d_{o}} + \frac{1}{d_{i}}$
where
f = focal length, 8.0 cm
do = object distance, 25.0 cm
di = image distance

Therefore
$\frac{1}{8} = \frac{1}{25} + \frac{1}{d_{i}} \\ 0.125 = 0.04 + \frac{1}{d_{i}} \\ \frac{1}{d_{i}} =0.125-0.04=0.085\\d_{i}= \frac{1}{0.085} =11.765 \, cm$
The closest answer is 12 cm.

12 cm

Answer from: Quest

answer

procedural programming, object-oriented programming

explanation

procedural programming is a type of computer programming language that specifies a series of well structured steps and procedures within its development period of time. it contains a systematic order of statements, functions and commands to complete a computational task or program. it is centered on creating procedures. while object oriented programming is a programming language that is centered on creating objects rather that actions and data rather than logic.. it has four principles which are inheritance, polymorphism, abstraction and encapsulation

Answer from: Quest

Answerthe energy required is 1.60 × 10⁻¹⁸ j, to three significant figures.explanationwe define electric potential as the ratio electric potential energy to the charge, $v = \dfrac{e_p}{q}$ then the following gives us the potential difference, $\delta v = v_b - v_a$ $\begin{aligned} \delta v & = \dfrac{e_p_b}{q} - \dfrac{e_p_a}{q} \\ & = \dfrac{\delta e_p}{q} \end{aligned}$ the formula $\delta v = \delta e_p / q$ may be on your formula sheet.the change in electric potential energy would be the energy that would needed to move it from point a to point b. solving for that, we get $\delta e_p = q\delta v$ using q = 8.00 × 10⁻¹⁹ c and δv = 2.00 v, we get $\begin{aligned} \delta e_p & = (8.00\times10^{-19} \text{ c})(2.00\text{ v}) \\ & = 1.60\times 10^{-18}\text{ j} \end{aligned}$ the energy required is 1.60 × 10⁻¹⁸ j, to three significant figures.

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An object is 25.0 cm from the mirror, its height is 5.0 cm, and focal length is 8.0 cm. what is the...

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