3 years ago

Eclipse of the sun occurs(A).When the moon is between the sun and the earth.(B).

Physics

1 answer:

lina2011 [118]3 years ago

6 0

Answer:

option a

Explanation:

You might be interested in

If you drag a 50kg block across the floor which has a coefficient of friction of .30, what is

torisob [31]

Answer:

750 Newton

Explanation:

force=mass(acceleration)

6 0

2 years ago

In thermodynamics, a closed system is a system where _____

Nady [450]

In a closed system, energy in form of heat (work) can be exchanged but not matter.

The answer to your question is C.

Hope it helped!

3 0

3 years ago

What is meant by radioactivity?

vladimir1956 [14]

What that means is the atom is so radioactive that the nucleus is unstable.

4 0

3 years ago

A diffraction pattern forms when light passes through a single slit. The wavelength of the light is 691 nm. Determine the angle

expeople1 [14]

Explanation:

Given that,

Wavelength of the light, $\lambda=691\ nm=691\times 10^{-9}\ m$

(a) Slit width, $a=3.8\times 10^{-4}\ m$

The angle that locates the first dark fringe is given by :

$sin\theta=\dfrac{\lambda}{a}$

$sin\theta=\dfrac{691\times 10^{-9}}{3.8\times 10^{-4}}$

$\theta=0.104^{\circ}$

(b) Slit width, $a=3.8\times 10^{-6}\ m$

The angle that locates the first dark fringe is given by :

$sin\theta=\dfrac{\lambda}{a}$

$sin\theta=\dfrac{691\times 10^{-9}}{3.8\times 10^{-6}}$

$\theta=10.47^{\circ}$

Hence, this is the required solution.

7 0

3 years ago

Some machines do not multiply the force that is applied to them

Katyanochek1 [597]

Answer:

Machine Efficiency

Explanation:

Efficiency is the percent of work put into a machine by the user (input work) that becomes work done by the machine (output work). The output work is always less than the input work because some of the input work is used to overcome friction. Therefore, efficiency is always less than 100 percent

5 0

3 years ago