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tatyana61 [14]
4 years ago
8

is using electrolysis to separate water molecules in hydrogen and oxygen atoms , a physical or chemical change?

Physics
1 answer:
DedPeter [7]4 years ago
8 0
Technically it's a chemical change even though the process is reversible.
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A resistor is connected in series with a power supply of 23.90 V. The current measure is 0.60 A. What is the resistance (in Ω) o
Yuliya22 [10]

The resistance in this circuit is 39.8 ohms.

Explanation:

Any circuit having resistor, battery and ammeter connected in series will obey the ohm's law in basic case. So according to the Ohm's law, the current flowing in the circuit through the ammeter will be equal to the voltage shown in the voltmeter or battery and resistor is the proportionality constant. So with this law

V = IR

So, Resistance R = V/I

As the voltage is given as 23.90 V and the current is given as 0.6 A, then resistance is

R = 23.90/0.6 = 39.8 ohms.

So, the resistance in this circuit is 39.8 ohms.

8 0
4 years ago
A laborer pushes a box to distance of 20m. if the force required to push the box is 25N what will be the quantity of work done​
Marrrta [24]

Answer:

500 J

Explanation:

In the case of a rectilinear movement, the work is calculated as the product of Force (N) * movement (m). In your case, unless the angle between the force vector and the displacement vector is different from 0, the work is:

25 N * 20 m = 500 J

7 0
3 years ago
How do I make a Bohr model of the boron atom?
4vir4ik [10]
This should help

there always needs to be the two electrons first if possible the 8 electrons for each shell till the number of electron runout

3 0
3 years ago
State the relation between acceleration and momentum​
polet [3.4K]

Answer:

Acceleration is the rate of change in velocity. Momentum is the mass times the velocity. So if you multiply the mass times the acceleration, you get the of change of momentum.

8 0
3 years ago
What does this mathematical expression mean? D 1/T
san4es73 [151]
The question is incomplete. If D=1/T then the answer is D, but if instead of =, there is a proportional sign, then the answer is C.
7 0
3 years ago
Read 2 more answers
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