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vesna_86 [32]
3 years ago
15

Which would likely demagnetize a magnetized iron nail?

Physics
2 answers:
siniylev [52]3 years ago
6 0

Answer:

By heating or dropping

Explanation:

The magnetized iron nail becomes demagnetize by heating it or by dropping it frequently.

As we give energy by any manner, by heating or by dropping, the magnetic moments get disturbed and then the magnetic property becomes decreases.

Delicious77 [7]3 years ago
5 0
Dropping it on a hard surface. 
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How long does it take an automobile traveling in the left lane of a highway at 60.0 km/h to overtake (become even with) another
pashok25 [27]

Answer:

4.95 seconds

Explanation:

It is given that the speed of the cars are constant and not accelerating

The relative speed between the two cars will be the difference in their speeds

S_r=60-20\\\Rightarrow S_r=40\ km/h

Converting to m/s

1\ km/h=\frac{1}{3.6}\ m/s

\\\Rightarrow 40\ km/h=40\times \frac{1}{3.6}\ m/s\\ =\frac{100}{9}\ m/s\\ =11.11\ m/s

Time = Distance / Speed

Time=\frac{55}{\frac{100}{9}}=4.95\ seconds

Time it would take the faster car to cross the slower car is 4.95 seconds

8 0
3 years ago
Using a 1-kW heater for one hour consumes more energy than using a 100-W bulb for twenty-four hours. Please select the best answ
Ierofanga [76]
Power is the amount of work done per unit of time. It will have units of Watts which is equal to Joules per second. We determine the energy of each system above by multiplying the power with time. We do as follows:

E(heater) =1000 W (1 hr) (3600s/hr) = 3,600,000 J
E(bulb) = 100 W (24 hr) (3600s/hr) =   8,640,000 J

Therefore, the answer would be false. It is the bulb that consumes more energy.
8 0
3 years ago
Which of the following affects the rate constant of a reaction?
Dennis_Churaev [7]
Arrhenius' equation relates the dependence of rate constant of a chemical reaction to the temperature. The equation below is the Arrhenius equation
k = Ae ^{{ \frac{-Ea}{RT} } } where k is the rate constant, T is the absolute temperature. As the temperature of the system increases, the rate constant also increases and vice versa.
3 0
3 years ago
5) A 5 kg watermelon is raised 3 m by carrying it up the stairs to the second
Nutka1998 [239]

Answer: 150J

Explanation:

m = 5 kg

g = 10 m/s2

h = 3m

P.E = mgh

P.E = 5 x 10 x 3

P.E = 150J

3 0
3 years ago
How do exons and introns differ?
Norma-Jean [14]
Exons And Introns differ because Exons code for protein and Introns do not.

so your answer would be: Exons code for Proteins



Are you in K12?
7 0
3 years ago
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