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Dmitry_Shevchenko [17]
3 years ago
8

A car has a mass of 8000 kg and a kinetic energy of 24,000 J. What is its speed?

Physics
1 answer:
Liula [17]3 years ago
8 0

Answer:

30 mph

Explanation:

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The current flowing in each resistor of the circuit is 4 A.

<h3>Equivalent resistance of the series resistors</h3>

The equivalent resistance of the series circuit is calculated as follows;

6 Ω and 4 Ω are in series = 10 Ω

5 Ω and 10Ω are in series = 15 Ω

<h3>Effective resistance of the circuit</h3>

\frac{1}{R} = \frac{1}{R_1} + \frac{1}{R_2} \\\\R = \frac{R_1R_2}{R_1 + R_2} \\\\R = \frac{10 \times 15}{10 + 15} \\\\R = 6 \ ohms

<h3>Current flowing in the circuit</h3>

V = IR

I = V/R

I = 24/6

I = 4 A

Learn more about resistors in parallel here: brainly.com/question/15121871

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The answer is letter c-0.068 j
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A cheetah runs with a positive acceleration. What does this tell you about the velocity time graph for the cheetah?
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B is the correct answer
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Which is correct about an ammeter?
s344n2d4d5 [400]

Answer:

b. The internal resistance must be much smaller than the other resistances in the circuit.

Explanation:

Ammeter is used to measure the current flowing through a circuit. It is connected in series configuration with the load. In such a scenario the resistance of the ammeter should be negligible so as to make sure that the voltage drop across the resistance of ammeter is zero and it shows the correct reading of the current in the circuit.

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Calculate the acceleration of a 1000 kg car if the motor provides a small thrust of 1000 N and the static and dynamic friction c
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Explanation :

It is given that,

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F_A-\mu mg=ma

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So, the acceleration of the car is -3.905\ m/s^2. Hence, this is the required solution.

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