Ask question

Ask question

All categories

4 years ago

12

A magnifying glass or a hand lens is a bi-convex lens. It is convex on both sides, meaning that the glass is curved outward to

1 answer:

tankabanditka [31]4 years ago

7 0

Answer:

Refracted

Explanation:

If on UsaTestPrep

You might be interested in

Which of the following is the best example of kinetic energy being transformed into potential energy

poizon [28]

A pendulum is probably the most common showing of this example. As the pendulum swings down, it converts its potential energy (height) into kinetic energy (velocity). At the lowest point the kinetic energy is the highest and the potential is the lowest. At the highest point in its swing the velocity is zero so the kinetic energy is zero and the potential energy is at a maximum (greatest height).

3 0

4 years ago

Read 2 more answers

An electron is accelerqated in the uniform field betwen two parallel charged oplates. The separation of the plates is 1.20 cm

marysya [2.9K]

Answer:

The speed of electron is $8.7\times10^{6}\ m/s$

Explanation:

Given that,

Separation of the plate = 1.20 cm

Suppose the field is $E=1.80\times10^{4}\ N/C$ .

If the electron is accelerated from rest near the negative plate and passes through a tiny hole in the positive plate.

What the speed does it leave the hole?

We need to calculate the acceleration

Using formula of electric force

$F = qE$

$ma=qE$

$a=\dfrac{qE}{m}$

We need to calculate the speed of electron

Using equation of motion

$v^2=u^2+2as$

$v^2=2as$

Put the value of acceleration in the formula

$v^2=2\times\dfrac{qE}{m}\times s$

Put the value into the formula

$v^2=2\times\dfrac{1.6\times10^{-19}\times1.80\times10^{4}\times1.20\times10^{-2}}{9.11\times10^{-31}}$

$v=\sqrt{2\times\dfrac{1.6\times10^{-19}\times1.80\times10^{4}\times1.20\times10^{-2}}{9.11\times10^{-31}}}$

$v=8.7\times10^{6}\ m/s$

Hence, The speed of electron is $8.7\times10^{6}\ m/s$

7 0

3 years ago

alayn h uderstands the half life of a certain substance is 90days. how long would it take for 80lbs of her substance to be reduc

yan [13]

Answer:

135 days...............

7 0

3 years ago

In Robin’s linguistics class, the teacher and students are discussing how the word “nice” once meant “foolish” and how “awful” u

aleksklad [387]

The answer would be B.

Semantics means the study of words and their meanings.

Hope this helped!

4 0

3 years ago

Read 2 more answers

The science of classifying and naming organisms based on their different characteristics is called ______________.

Fofino [41]

Answer:

Biology

Explanation:

Hopethis helps!

8 0

3 years ago

Read 2 more answers