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3 years ago

It opens or close the circuit

Physics

1 answer:

gayaneshka [121]3 years ago

3 0

Answer:

The person above me is right i had a test a couple of days ago and thats kinda what u put and got it right!

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Objects with less density than water will?

ruslelena [56]

Objects with less density than water will float when you put them in water.

Objects with greater density than water will sink when you put them in water.

6 0

3 years ago

A diffraction grating has 300 lines per mm. If light of wavelength 630 nm is sent through this grating, what is the highest orde

True [87]

Answer:

The order of maximum is $n = 5$

Explanation:

From the question we are told that

The diffraction grating is k = 300 lines per mm = 300000 lines per m

The wavelength is $\lambda = 630 \ nm = 630 *10^{-9} \ m$

Generally the condition for constructive interference is mathematically represented as

$dsin \theta = n * \lambda$

Here n is the order maximum

d is the distance the grating which is mathematically represented as

$d = \frac{1}{k}$

=> $d = \frac{1}{300000}$

=> $d = 3.3*10^{-6}\ m$

$n = \frac{dsin \theta}{ \lambda}$

at maximum $sin\theta = 1$

$n = \frac{d}{\lambda}$

=> $n = \frac{3.3*10^{-6}}{630 *10^{-9}}$

=> $n = 5$

8 0

3 years ago

Because the block is not moving, the sum of the x components of the forces acting on the block must be zero. Find an expression

Viktor [21]

Answer:

$F_{xtotal} = F_{x} - \mu N$

Explanation:

Let the total force be F

The force that produces motion in the x direction is given as, $F_{x}$

Let the frictional force be given as:

$F_{fric} = \mu N$

Thus, the net force is given as:

$F_{xnet} = F_{x} - \mu N$

7 0

3 years ago

Which of the following has the fewest calence electrons?

dlinn [17]

Answer:

both magnesium and strontium have 2 valence electrons

Explanation:

potassium has 8 valence electrons, and nitrogen has 5.

8 0

3 years ago

Find the y-component of this vector:73.3,12.0m. Remember, angles are measured from the +x axis.

Rainbow [258]

Answer:

11.5 meters

Explanation:

73.3°, 12.0m

The y-component is the magnitude of the vector times the sine of the angle measured from the +x axis.

y = 12.0 sin (73.3°)

y = 11.5

The y-component is 11.5 meters.

7 0

3 years ago

It opens or close the circuit​

It opens or close the circuit