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avanturin [10]
4 years ago
13

What happens when light from the Sun passes through any type of matter?

Physics
1 answer:
pickupchik [31]4 years ago
6 0
When Sun's light passes through any type if matter, some rays get absorbed while others get reflected. This is how colors are made and how we perceive them.
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A block of mass m moving due east at speed v collides with and sticks to a block of mass 2m that is moving at the same speed vv
lapo4ka [179]

Answer:

30.36°

Explanation:

By using linear momentum; linear momentum can be expressed by the relation:

mv_xi + mv_yj

where ;

m= mass

v_x = velocity of components in the x direction

v_y = velocity of components in the y direction

If we consider the east as the positive x and north as positive y which is synonymous to what we usually have on a graph.

Then;

Initial momentum = mvi + 2mvcos 45i + 2mvsin45 j

= (mv+2mvcos45)i + (2mvsin45)j

However, the masses stick together after collision and move with a common velocity: V_xi +V_yj

∴ Final momentum = 3mv (V_xi +V_yj)

= 3mV_xi + 3mV_yj

From the foregoing ;

initial momentum = final momentum

3mV_xi + 3mV_yj = (mv+2mvcos45)i+(2mvsin45j)

So;

3mV_x = mv + 2mv cos 45 \\\\3mV_y = 2mV sin 45

V_x = \frac{mv+2mvcos45 }{3m}\\\\V_x = \frac{v+2vcos45}{3}

V_y = \frac{2mvsin45}{3m} \\\\V_y = \frac{2vsin45}{3}

Finally;

The required angle θ = tan^{-1} = \frac{V_y}{V_x}

θ = tan^{-1} = \frac{\frac{2vsin45}{3}}{\frac{v+2v.cos45}{3}}

θ = tan^{-1} = \frac{2sin 45}{1+2cos45}\\\\

θ = 30.36°

7 0
3 years ago
What is the change in air pressure a good indicator of a change in temperature be a change in the weather I decrease in humidity
Elza [17]

Answer:

A

Explanation:

warm air rises creating low presure

cold air sinks creating high presure

so this means that temprature is realated to presure.

3 0
3 years ago
When all parts of a circuit are composed of conducting materials, the circuit is said to be
den301095 [7]

When all parts of a circuit ... all the way from one terminal of the
battery or power supply to the other terminal ... are composed of
conducting materials, then current can flow in the circuit, and the
circuit is said to be 'closed'.

4 0
4 years ago
Please help! If the instantaneous speed of an object remains constant, can its instantaneous velocity change? If the instantaneo
kondaur [170]
<span>
I think the the answer would be no. </span> If the instantaneous speed of an object remains constant, then its instantaneous velocity would not change. S<span>ince v = c for c is some constant, then |v| = |c|. This is regardless of the sign of c. Hope this answers the question.</span>
4 0
4 years ago
Alguien me ayuda con calculos estequiometricos?
ruslelena [56]

Answer:

SURE!!!...

But what to calculate!!!....

5 0
3 years ago
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