What happens when an object is moved against gravity, such as rolling a toy car up a ramp?

Physics

1 answer:

BlackZzzverrR [31]2 years ago

3 0

Answer:

it goes up until we help it to but the moment we stop support it gets affected by gravity and goes back

Explanation:

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3 years ago

Two resistors, A and B, are connected in parallel across a 6.0-V battery. The current through B is found to be 2.0 A. When the t

oksano4ka [1.4K]

Answer:

The resistance of A is 6 ohms and the resistance of B is 3 ohms

Explanation:

<u>Step 1:</u> For the first connection (parallel connection), the resistance of B will be calculated.

Note: in a parallel connection, the voltage through each resistor is the same.

$V = I_AR_A = I_BR_B\\\\R_B = \frac{V}{I_B} = \frac{6}{2} = 3 \ ohms$

<u>Step 2:</u> The resistance of A will be calculated from the second connection (series connection)

Note: in series connection, the current flowing in each resistor is the same

$V = V_A + V_B\\\\V = IR_A + IR_B\\\\The \ voltage \ drop \ in \ B; \ V_B = V- V_A\\\\V_B = 6 - 4 = 2 \ V\\\\IR_B = 2\ V\\\\I = \frac{2 \ V}{R_B}= \frac{2}{3} \ A\\\\The \ resistance \ of \ A \ is \ calculated \ as ;\\\\IR_A = 4 \ V\\\\R_A = \frac{4}{I} = \frac{4 \times 3}{2} = 6 \ ohms$