Which kind of mirror can produce real images? A)concave B)convex C)flat

Stephanie is riding her bicycle to the park. The chemical energy used to pedal the bicycle is transformed into __________.

Jet001 [13]

Answer:I'm gonna say mechanical or kinetic depending on how you look at it.

Explanation:

4 0

2 years ago

Read 2 more answers

A. How long does it take light to travel through a 3.0-mm-thick piece of window glass?

hodyreva [135]

Answer:

a) $1.517\times10^{-11}$ s

b) 3.41 mm

Explanation:

a)

We take the speed of light, c = $3.0\times10^8$ m/s and the refractive index of glass as 1.517.

Speed = distance/time

Time = distance/speed

Refractive index, n = speed of light in vacuum / speed of light in medium

$n=\dfrac{c}{s}$

$s=\dfrac{c}{n}$

$t=\dfrac{d}{c/n}$

$t=\dfrac{dn}{c}$

$t=\dfrac{3\times10^{-3}\times1.517}{3.0\times10^8}$

$t=1.517\times10^{-11}$

b)

We take the refractive index of water as 1.333.

Speed in water = speed in vacuum / refractive index of water

Distance = speed * time

$d=s\times t$

$d=\dfrac{c}{n_w}\times \dfrac{3\times10^{-3}\times1.517}{c}$

$d=\dfrac{3\times10^{-3}\times 1.517}{1.333}$

d = 3.41 mm

6 0

3 years ago

Which statement applies only to electric force instead of both electric and magnetic

garri49 [273]

Answer:

C

Explanation:

7 0

2 years ago

Which of the following examples does not make use of total internal reflection?

liubo4ka [24]

Answer:

laser pointer does not make use of total internal reflection

7 0

2 years ago

A bowling sphere is sitting on the ground. One of your classmates

ikadub [295]

normal force because it is perpendicular to the surface

4 0

2 years ago