Answer:
419815.72 N
Explanation:
F = Force
t = Time
Average speed
Time = Distance / Speed
Impulse
The force exerted on the pier is 419815.72 N
Answer:
Answer: Because it at rest indefinitely without any external force acting upon it. Newton's first law also applies when the rocket is gliding through space with no external forces on it, it will travel in a straight line at a constant speed forever
Explanation:
Answer
given
Case 1-Speed of car 50 Km/h for 15 min
Case 2-Speed of car 85 Km/h for 19 min
Case 3 - Speed of car 60 km/h for 55 min
lunch break time = 25 min
a) total distance travel
we know,
distance = speed x time
D = 94.42 Km
b)
Thomson's results from experiments with cathode ray tubes produced a big change in scientific thought about atoms because <u>his results gave the first evidence that atoms were made of smaller particles.</u>
Particularly, he proved the existence of negatively charged sub-atomic particles that are called as electrons which together with a positively charged nucleus form an atomic unit.
Thomson's plum pudding model of the atom had negatively-charged electrons embedded within a positively-charged "soup." Thomson also made the following conclusions from his experiment:
- The cathode ray is composed of negatively-charged particles.
- The particles must be as part of an atom because the mass of each particle is only ~ 1/2000
compared to one hydrogen atom mass.
- Within the atoms of all elements, these subatomic particles are found.
Initially it was controversial, but later Thomson's discoveries were gradually accepted by scientists. After then, his cathode ray particles were given a name called as electrons.
When water evaporates of your body it cools you down, hence why after a shower when the water droplets begin to evaporate you feel cold