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Aliun [14]
3 years ago
14

Why is zinc chloride a substance and not a mixture

Physics
1 answer:
Natalija [7]3 years ago
7 0

It is considered a substance because it has a uniform and definite composition.

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If jack was traveling at 100 miles in 2 hours what was his speed in miles per minute?
Ludmilka [50]

Speed = (distance) / (time)

Speed = (100 mi/2 hr)

Multiply by a fraction equal to 1 :

Speed = (100 mi/2 hr) x (1 hr/60 min)

Speed = (100 x 1 / 2 x 60) (mi-hr/hr-min)

Speed = (100 / 120) (mi / min)

Speed = 5/6 mi/min

<em>Speed =  0.833... mi/min</em>

4 0
3 years ago
A rocket moves upward, starting from rest with an acceleration of +30.0 m/s2 for 5.00 s. It runs out of fuel at the end of this
olchik [2.2K]

Answer:

The distance covered by the rocket after fuel ran out is 3442.04 m

Explanation:

Given that the rocket moves with an acceleration a=30m/s^2

time t=5 s

Since the rocket starts from rest initial velocity  u=0 s

The distance it travelled within this time is given by  s=ut+ \frac{1}{2} at^2                                                                                                  =0 \times 5+ \frac{1}{2} (30\times25)=375 m

Velocity at this point is given by v=u+at

v=0+30\times5=150m/s

Given that at this height it runs out of fuel but travels further. Here final velocity v=0(maximum height), initial velocityu=150 m/s  and time to zero velocity t=\frac{v}{g} = \frac{150}{9.8} =15.3 s.

Thus it travels 15.3 seconds more after fuel running out. The distance covered during this period is given

s= ut+\frac{1}{2} gt^2=150 \times 15.3+1/2 \times9.8 \times 15.3^2=3442.04 m

7 0
3 years ago
A transformer's secondary coil has twice as many turns as its primary. If the primary is connected to 6 V of DC, how many volts
Aleksandr-060686 [28]
Zero is induced in the secondary, and the total output of the transformer consists of smoke.
Transformers only work with AC.
6 0
4 years ago
When an object is lifted against the force of gravity it has gravitational potential energy. The energy depends on the object's
USPshnik [31]
The answer is actually True, I just took the test and it was correct.
5 0
4 years ago
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Which would most likely cause molten rock material to become glassy igneous rock?
Ainat [17]
The cooling on earth's surface (extrusive)  makes a molten rock to become glassy. The lava cools so fast that crystals don't have time to form, which makes it glassy. Hope this helps!
6 0
3 years ago
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