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Dmitriy789 [7]
3 years ago
5

The colour of star depend on its temperature, why?​

Physics
1 answer:
taurus [48]3 years ago
4 0

<em>Another key factor that determines a star's colour is its temperature. As stars become hotter, the overall radiated energy increases, and the peak of the curve changes to shorter wavelengths. To put it another way, when a star heats up, the light it produces moves toward the blue end of the spectrum.</em>

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What are the set of equations called that can be used to quantify motion in the case of uniform acceleration?
KATRIN_1 [288]
The kinematic equations are used to <span>quantify motion in the case of uniform acceleration.

The other name is : SUVAT equations, where the letters signify: 
 displacement (s),
initial velocity (u),
 final velocity (v),
acceleration (a), and
 time (t).

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7 0
4 years ago
A wagon is rolling forward on level ground. Friction is negligible. The person sitting in the wagon is holding a rock. The total
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When it comes to this equation, I always stick to good ol' momma bears solutions! Tell that boy to put the rock down, rocks are dangerous!! From- MommaBoi101
6 0
3 years ago
a straight, 2.5-m wire carries a typical household current of 1.5 a (in one direction) at location where the earth's magnetic fi
kotykmax [81]

Answer:

a

The magnitude of the force is  F=2.1*10^{-4}N

The direction is from south to north i.e upward

b

The magnitude of the force is  F=2.1*10^{-4}N

The direction is towards the west

c

The magnitude of the force is  F=2.1*10^{-4}N

the direction of the magnetic field is parallel to the direction of the current  (south to north ) hence the direction in 0 in comparison to the direction of the current

d

From the value of force  we got the answer to this question is No

Explanation:

Generally magnetic force is mathematically represented as

                  F = BIL

Where the B is the magnitude of the magnetic field which is given as

          B= 0.55 guass = \frac{0.55}{10000} = 0.55 *10^{-4}T

               I is the current with a value of I = 1.5A

               L is the length of the wire given as  L =2.5m

Substituting the value

             F =(0.55 *10^ {-4}) (1.5)(2.5)

                F=2.1*10^{-4}N

For the first case where the current is moving from west to east and we are told that the magnetic field is  from south to north the according to Fleming's right hand rule the force(exerted by earths magnetic field ) would be moving from south to north (i.e upward)

For the second case where current is moving vertically upwards the direction of the force is  to the west according to Fleming's right hand rule

 

7 0
3 years ago
Read 2 more answers
Children are ready for more complex storybooks:
FromTheMoon [43]

Answer:

4

Explanation:

Because that is when they're mind learns how to read

5 0
3 years ago
A 1000-kg whale swims horizontally to the right at a speed of 6.0 m/s. It suddenly collides directly with a stationary seal of m
anzhelika [568]

Answer:

Momentum after collision will be 6000 kgm/sec

Explanation:

We have given mass of the whale = 1000

Initial velocity v = 6 m/sec

It collides with other mass of 200 kg which is at stationary

Initial momentum of the whale = 1000×6 = 6000 kgm/sec

We have to find the momentum after collision

From conservation of momentum

Initial momentum = final momentum

So final momentum = 6000 kgm/sec

5 0
4 years ago
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