Answer:
Explanation:
A block is moving with constant velocity action the action of 3 N force.
Statement A: False, as the block is moving with constant velocity so net force is zero.
Statement B: False, as the net force is zero.
Statement C: True, the friction force is equal to the applied force.
Statement D: True: The net force is zero so that the block is moving with constant velocity.
Statement E: True, the net force is zero so the acceleration is also zero.
Answer:
Explanation:
Ah is a unit of charge .
A battery with 12 V and charge capacity of 40 Ah will have energy content
= volt x charge
volt = 12 V
Charge = 40 Ah
= 40 x 60 x 60 A.s
= 144000 coulomb
energy content = 12 x 144000
= 1728000 J
energy content of heavy duty battery
= 12 x 60 x 60 x 60
= 2592000 J
Ratio = 1728000 / 2592000
= 2 / 3
Current can not be compared as current depends upon the resistance of appliance used . As resistance of appliance is unknown , current can not be compared.
The uniform acceleration of the car is 4.485 m/s².
<h3>
Acceleration of the car</h3>
The uniform acceleration of the car is calculated as follows;
v² = u² + 2as
a = (v² - u²)/2s
where;
- v is final velocity = 41 m/s
- u is initial velocity = 28 m/s
- s is distance = 100 m
- a is acceleration = ?
a = (41² - 28²)/(2 x 100)
a = 4.485 m/s²
Thus, the uniform acceleration of the car is 4.485 m/s².
Learn more about uniform acceleration here: brainly.com/question/2505743
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I believe the answer is 40,000 Hz to 100,000 Hz
