A.) <span>If no unbalanced force acts upon the house of cards, then it will remain standing forever.
[ Other Statements doesn't make any sense in Physics, they can be true in some situation & can't be false, option A is the only answer ]
Hope this helps!</span>
The answer is 4 kg m/s
because p = m x v , 2 kg x 2m/s = 4 kg m/s
Answer:
The approximate change in entropy is -14.72 J/K.
Explanation:
Given that,
Temperature = 22°C
Internal energy
Final temperature = 16°C
We need to calculate the approximate change in entropy
Using formula of the entropy
Where, = internal energy
T = average temperature
Put the value in to the formula
Hence, The approximate change in entropy is -14.72 J/K.
Answer:
1.) 1.5 A
2.) The repulsive electric force becomes four times as strong.
3.) 8 W
4.) Does the current in the wire create a magnetic field?
5.) A magnetic field created by the electric current causes the compass needle to move.
6.) Resistor
7.) Battery
Explanation:
1.) Let's use ohms law. V = IR
Current I = 6/4 = 1.5 A
2.) Since the particles are of same charges, the will experience a repulsion electric force. As their charges doubled, The repulsive electric force becomes four times as strong. Because the repulsive force between is proportional to the product of the two magnitude of charges.
3.) Since power P = IV
Greatest power supplied will be the product of maximum current and voltage
P = 2 × 4 = 8 A
4.) Does the current in the wire create a magnetic field?
There was a magnetic repulsion when the switch was closed because of the magnetic field created by the current in the wire.
5.) A magnetic field created by the electric current causes the compass needle to move.
6.) That is the symbol of a resistor
7.) That is the symbol of a cell or Battery