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Mama L [17]
3 years ago
10

Which of these period three elements from the periodic table would you predict to be the MOST metallic and why? A) Al B) Si C) P

D) S E) Cl F) Ar
Physics
1 answer:
Sauron [17]3 years ago
6 0
Sorry I don’t even know
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A 40.0 kg block of lead is heated from -25°C to 200°C.
irga5000 [103]

Answer:

B. 1,170,000 J

Explanation:

Given;

mass of lead block, m = 40 kg

initial temperature, t₁ = -25 ⁰C

final temperature, t₂ = 200 ⁰C

The heat absorbed the lead block is calculated as;

H = mcΔt

where;

c is the specific heat capacity of lead =  130 J/kg⁰C

H = 40 x 130 x (200 - (-25))

H = 40 x 130 x (200 + 25)

H = 40 x 130 x 225

H = 1,170,000 J

Therefore, the heat absorbed the lead block is 1,170,000 J

4 0
3 years ago
Both car a and car b leave school at the same time, traveling in the same direction. car a travels at a constant speed of 75 km/
Zigmanuir [339]
1)
S₁ = V₁*t = 75*1,7 = 127,5 km

2)
S₂ = V₂*t = 91*1,7 = 154,7 km
4 0
3 years ago
A circular loop of wire with 15 turns, radius 0.129 m and resistance 0.251 Ohms is connected to a 16.7 V power supply. The magne
Licemer1 [7]

The magnetic field at the center of the circular loop is 3.24 x 10⁻⁴ T.

<h3>Current in the wire</h3>

The current in the wire is calculated as follows;

V = IR

I = V/R

I = 16.7/0.251

I = 66.53 A

<h3>Magnetic field at the center of the loop</h3>

The magnetic field at the center of the circular loop is calculated as follows;

B = \frac{\mu_0 I}{2R} \\\\B = \frac{4\pi \times 10^{-7} \times66.53 }{2\times 0.129} \\\\B = 3.24 \times 10^{-4} \ T

Learn more about magnetic field here: brainly.com/question/7802337

3 0
3 years ago
HEY CAN ANYONE PLS ANSWER DIS!!!!!!
snow_lady [41]

Answer:

Explanation:

1.wrap bar magnet in a plastic baggie and remove the iron filings from the mixture by using a bar magnet. Place a small piece of scrap paper on the scale and “tare” the scale. Then place filings on the scrap paper and record (e) the mass of the iron filings. Don't throw out the iron–save it to be recollected.

2.When sand is added to water it either hangs in the water or forms a layer at the bottom of the container. Sand therefore does not dissolve in water and is insoluble. It is easy to separate sand and water by filtering the mixture. Salt can be separated from a solution through evaporation.

3.Sand (mostly silicon dioxide) is not.

Pour the salt and sand mixture into a pan.

Add water. ...

Heat the water until the salt dissolves. ...

Remove the pan from heat and allow it to cool until it's safe to handle.

Pour the salt water into a separate container.

Now collect the sand.

Pour the salt water back into the empty pan.

Heat the salt water until the water boils. Continue boiling it until the water is gone and you're left with the salt.

Another way you can separate the salt water and sand is to stir up the sand/salt water and pour it through a coffee filter to capture the sand.

8 0
4 years ago
Read 2 more answers
What is the only continent with land in all four hemispheres?
dimaraw [331]
It’s either Asia or the America
7 0
3 years ago
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