A) voltage available to each light remains constant regardless of the number of lights that are on
I took the test
If a coin is dropped at a relatively low altitude, it's acceleration remains constant. However, if the coin is dropped at a very high altitude, air resistance will have a significant effect. The initial acceleration of the coin will be the greatest. As it falls down, air resistance will counteract the weight of the coin. So, the acceleration will decrease. Although the acceleration decreases, the coin still accelerates, that is why it falls faster. When the air resistance fully counters the weight of the coin, the acceleration will become zero and the coin will fall at a constant speed (terminal velocity). So, the answer should be, The acceleration decreases until it reaches 0. The closest answer is.
a. The acceleration decreases.
Answer: 4.03 m/s
Explanation: Kinetic energy is
KE = 1/2 m v²
So we derive the equation to have v.
v = √ 2KE / m
= 2 x 568 J / 70 kg
= 16.23
= √ 16.23
= 4.03 m/s
Given the time and the horizontal velocity, we can simply
compute for the distance how far the ball travelled using the formula:
distance = velocity * time
<span>Since velocity is in units of m/s and time is seconds,
therefore we can directly get a unit in meters.</span>
D. Volume will increase
Volume and temperature are directly proportional for a gas.