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raketka [301]
4 years ago
13

Has luster

Physics
2 answers:
ruslelena [56]4 years ago
3 0

<span>The answer to this problem is magnesium. I hoped I helped someone with this</span>
natali 33 [55]4 years ago
3 0

Answer: A)  magnesium  


Explanation:

Magnesium is a metal which has luster. It is malleable and ductile as most of the metal. It is a good conductor of heat and electricity. It is solid at room temperature.

Rest of others do not have the listed properties .

As mercury is not malleable and ductile as it is a liquid metal.

Neon is noble gas. Phosphorus is a non-metal, cannot beaten up to make sheets.

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An electric fan has the power output of 60W. How much work is done if the fan operates for 120s?
Digiron [165]
Since power = work done/time, 60= work done/120, work done = 120*60 = 7200. So,work done = 7200N (Newton). 
I'm not sure if you're supposed to convert the seconds to time.
4 0
4 years ago
Which part of earths surface has the greatest rotational speed
Anni [7]
Every point on the surface must have the same rotational speed.
Otherwise some places would rotate away from other places.

If the next block of your city rotated faster than the block that you live on,
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6 0
3 years ago
A car is driving away from a crosswalk. The formula d = t 2 + 2 t expresses the car's distance from the crosswalk in feet, d , i
Ede4ka [16]

Answer:

1) No, the car does not travel at constant speed.

2) V = 9 ft/s

3) No, the car does not travel at constant speed.

4) V = 5.9 ft/s

Explanation:

In order to know if the car is traveling at constant speed we need to derive the given formula. That way we get speed as a function of time:

V(t) = 2*t + 2   Since the speed depends on time, the speed is not constant at any time.

For the average speed we evaluate the formula for t=2 and t=5:

d(2) = 8 ft     and      d(5) = 35 ft

V_{2-5}=\frac{d(5)-d(2)}{5-2}=9 ft/s

Again, for the average speed we evaluate the formula for t=1.8 and t=2.1:

d(1.8) = 6.84 ft     and      d(2.1) = 8.61 ft

V_{1.8-2.1}=\frac{d(2.1)-d(1.8)}{2.1-1.8}=5.9 ft/s

4 0
3 years ago
19. Find the recoil velocity of a 65 kg ice hockey goalie who
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Answer:

c. 0.12 m/s

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we get

v_2=\frac{0.15\times 50}{0.15+65}=0.12

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In which stars will you likely find fusion of heaveir elements such as helium and oxygen
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The answer would be red giants and supergiants
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