Density of copper: 8,9
Density of steel: 7,7
Density of aluminum: 2,7
And
Resistivity of copper: 1,7
Resistivity of steel: 16,9
Resistivity of aluminum: <span>2,7</span>
Hope I Helped You!!! :-)
Have A Good Day!!!
for acceleration we can define that rate of change in velocity is know as acceleration
So whenever velocity of train is changing with time we can say train is accelerating
Now here if initially train is standstill then after some time its speed is 5 m/s
so here the train is accelerated first time
Then on straight path its speed changed from 5 m/s to 10 m/s so here train gets accelerated second time
After this train chugged around a curve with same speed 10 m/s
SO here since train is moving in curve so here its direction of velocity is continuously changing and this type of acceleration is known as centripetal acceleration
SO this is accelerated Third time
Then its speed decreases and it comes to speed of 5 m/s from 10 m/s
So here it is acceleration of train for Fourth time
Then finally train comes to stop so again its speed changed from 5 m/s to 0
so this is acceleration of train Fifth time
So total train will accelerate 5 times in whole path
Answer:
A.) 230 km
B.) 76.67 km/h
Explanation:
Given that On a straight road (taken to be in the +x direction) you drive for an hour at 50 km per hour, then quickly speed up to 90 km per hour and drive for an additional two hours.
A.) How far do you go?
When driving for an hour, the distance covered will be
Distance = speed × time
Distance = 50 × 1 = 50 km
When driving for additional 2 hours, the distance covered will be
Distance = 90 × 2 = 180 km
Total distance = 180 + 50 = 230 km
b. What is your average x component of velocity?
Average Velocity = total distance/ total time
Average velocity = 230/3
Average velocity = 76.67 km/h
c. Why isn't vavg,x equal to the arithmetic average of your initial and final values of vx, (50+90)/2 = 70 km per hour
They are not equal because of the displacement is the same as distance travelled.
Are you asking how to plot a against t?
It depends what the motion is...