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3 years ago

15

An elderly sailor is shipwrecked on a desert island but manages to save his eyeglasses. The lens for one eye has a power of 1.28

diopters, and the other lens has a power of 8.50 diopters. What is the magnifying power of the telescope he can construct with these lenses

1 answer:

ad-work [718]3 years ago

3 0

10.88 is the answer to the question

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A motorcycle accelerates from a stop at a rate of 4m/s 2 for 20 seconds. It then continues at a

8_murik_8 [283]

After 20 s, the motorcycle attains a speed of

$\left(4\dfrac{\rm m}{\mathrm s^2}\right)(20\,\mathrm s)=80\dfrac{\rm m}{\rm s}$

and it continues at this speed for the next 40 s. So at 45 s, its speed is 80 m/s.

4 0

3 years ago

A rope breaks when the tension reaches 205 N. What is the maximum speed at which it can swing a 0.477 kg mass in a circle of rad

jekas [21]

Answer:

Maximum velocity will be 17.651 m /sec

Explanation:

We have given a rope breaks when tension reaches 205 N

Mass m = 0.477 kg

Radius of the circle r = 0.725 m

Tension in the rope is given by

$T=\frac{mv^2}{r}$

$205=\frac{0.477\times v^2}{0.725}$

$0.477v^2=148.625$

$v^2=311.5828$

v = 17.651 m /sec

8 0

4 years ago

5) With a power of 0.12HP it is possible to move a piece of furniture from one place to another, in 14 seconds, applying a force

viva [34]

Answer:

a) 1250 J

b) 17.9 m

Explanation:

Convert horsepower to watts:

0.12 HP = 89.5 W

a) Work = power × time

W = (89.5 W) (14 s)

W = 1250 J

b) Work = force × distance

1250 J = (70 N) d

d = 17.9 m

7 0

3 years ago

Why does green light slow down more than orange light does when passing through an object?

jeka94

Because when a white light goes through a clear object like the glass pyrimide it divides into the different color lights the different color lights travel in different speeds like the red light traveles faster that the purple light thats why on a rainbow the red is on the top and purple is on the bottom
HOPE THIS HELPED

3 0

3 years ago

Read 2 more answers

Qualitative data from surveys and interviews can be obtained by

ivann1987 [24]

Answer:

averaging the number of responses to each sample equation

6 0

3 years ago