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GalinKa [24]
4 years ago
15

A rod made up of a single element is used to heat water using electricity. To which group does this element probably belong to?

Physics
2 answers:
nlexa [21]4 years ago
6 0

Answer:

Answered

Explanation:

A rod made up of a single element that is used to heat water is made of nichrome ( Nichrome is an alloy of nickel and chromium, which has majority of  nickel in it about 80% and 20% is chromium). Since, the majority is of nickel, nickel is a transition element belonging to D- Block in the periodic table and is found in 10th group. Nickel is ferromagnetic element. It is also used widely in stainless steel.

aliina [53]4 years ago
4 0
Nichrome is usually used as the rod to heat water using electricity.  It is an example of Nickel and  belongs to the element Nickel in the periodic table.  
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If the pressure of a gas sample is quadrupled and the absolute temperature is doubled. True or False
Vanyuwa [196]

The given statement"If the pressure of a gas sample is quadrupled and the absolute temperature is doubled" is false.

Answer: Option B

<u>Explanation:</u>

As we know the direct relationship between Pressure and Temperature by the Gay-Lussac’s Law,

                     P_{1} T_{1}=P_{2} T_{2}

From this, we get,

                     \frac{P_{1}}{T_{2}}=\frac{P_{2}}{T_{1}}

                     T_{2}=\frac{P_{1} T_{1}}{P_{2}}

So, according to given statement, we have P_{2} = 4 P_{1}

Then from the above expression, we can find out the value of T_{2} when pressure increased by 4 times of initial pressure as,

                     T_{2}=\frac{P_{1} T_{1}}{4 P_{1}}

Hence, we get,

                      T_{1}=4 T_{2}

Hence, from the above expression we can say that as we increase the pressure four times, the temperature does not get doubled. So, the given statement in the question is false.

6 0
4 years ago
A copper Wire has a length of 160 m,and a diameter of 1.0 mm,if ,the wire is connected to a 1.5-Volt battery ,How much Current f
makkiz [27]
Some guidance notes which may help.To calculate the current flow, Ohm's law can be used. This can be written as current=voltage/resistance, or I=V/R. V is 1.5V.R for the copper wire quoted would be calculated as R = resistivity x length/cross sectional area. The area would be calculated from the formula area = pi x diameter squared/4So, R=resistivity x length divided by (pi x diameter squared/4)Until is the resistivity of copper is known, that's about as far as can be gone.Any further questions, please ask.
3 0
4 years ago
Please help! Question is attached.​
il63 [147K]

Answer:

a. 6

b. 6 m/s²

c. 300 m to the right

d. 30 secs

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slope = rise /run

60-0/10-0

= 6

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c. d=ut+1/2at²

t=10 (segment A last for 10 secs)

u - initial velocity = 0

so d = 0(10)+1/2*6*10²

=300 m

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3 years ago
What is the force required to produce to produce a current of one ampere through a resistance of one ohm?
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1 Newton of force is required to produce that.....
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