If an object is moving with a constant velocity, then by definition it has zero acceleration. So there is no net force acting on the object. The total work done on the object is thus 0 (that's not to say that there isn't work done by individual forces on the object, but the sum is 0 ).
<u>Out of all given choices, the following statements are true:</u>
- An ammeter is used to measure current.
- A voltmeter is used to measure voltage.
- A voltmeter must be placed in parallel with a resistor to measure the voltage across the resistor.
Options A, E, and F
<u>Explanation:</u>
An instrument by which the current in a circuit is measured is called ammeter whereas an instrument in which voltage is measured in a circuit is called a voltmeter . The ammeter is placed in series with the resistor while the voltmeter is placed in parallel with the resistor.
For the option B, since the ammeter must be placed in series with the resistor to measure current, it is false. Option C is false because an ammeter has zero internal resistance. Option D is also false because a voltmeter has a high internal resistance and is actually infinite.
Answer:
A
Explanation:
Pushing a car up a steep hill is the most work. First of all a car is heavy. Secondly, its hard to walk up a steep hill let alone push a car up one.
Answer:
D
Explanation:
Jack nd Jill did the same amount of work but jack had more power
Please give brainlist
The rate at which velocity changes over time is <em>acceleration</em>.
If you walk 3m in a straight line then turn 60 degrees until you are standing at your original position then you have walked a hexagon
