2 years ago

Who invented the first telescope

Physics

2 answers:

mylen [45]2 years ago

5 0

Answer:

Hans Lipperhey

....................................

Lapatulllka [165]2 years ago

3 0

Hans Lipperhey and Lyman Spitzer

You might be interested in

A young man walks daily through a gridded city section to visit his girlfriend, who lives m blocks East and nblocks North of whe

Arada [10]

Answer:

The man ate eggs.

Explanation:

He should brush his teeth before seeing his girlfriend.

4 0

2 years ago

provides one model for solving this problem. The maximum strength of the earth's magnetic field is about 6.9 x 10-5 T near the s

jeka57 [31]

Answer:

The minimum no. of turns is $3.126 \times 10^{5}$

Explanation:

Given:

Magnetic field $B = 6.9 \times 10^{-5}$ T

Frequency $f = 84.5$ Hz

Area of turn $A = 0.021$ $m^{2}$

Voltage $V_{rms} = 170$ V

From the formula of induced emf,

$V = NBA \omega$

Where $\omega = 2\pi f$ and $V = \sqrt{2} V_{rms}$

So number of turn is,

$N = \frac{\sqrt{2} V_{rms} }{AB2\pi f }$

$N = \frac{\sqrt{2} \times 170 }{0.021 \times 6.9 \times 10^{-5} \times 6.28 \times 84.5 }$

$N = 3.126 \times 10^{5}$

Therefore, the minimum no. of turns is $3.126 \times 10^{5}$

4 0

3 years ago

How can scientists know for sure that the cell theory is true ? What evidence do we have to prove it

Nikolay [14]

The basic unit of life, it can be seen wit microscopes

3 0

3 years ago

Which of the following scenarios will cause the current to stop flowing within a circuit?

statuscvo [17]

A. The switch within the closed circuit is opened.

If the switch is opened current will stop flowing, as the current will meet a gap, that is not connected by a conductor.

8 0

2 years ago

Read 2 more answers

When we say Mohit has Blue Eyes which part of the ice is begin referred to US blue

oksian1 [2.3K]

Answer:

The iris

Explanation:

6 0

2 years ago

Read 2 more answers

Who invented the first telescope​

Who invented the first telescope