Answer a) impulse is 1360 kg.m/s
Explanation: impulse is impact force times the time of impact
I = 3400 * 0.4 = 1360kg.m/s
Answer b) final velocity is 10.1m/s
Explanation: impulse is the change of momentum
I = m(v-u)
V and u are final and initial velocities respectively.
1360 = 200 (v - 3.3)
1360 = 200v - 660
V = (1360+660)÷200
V = 10.1m/s
Q2 answer is: astronaut has KE approximately 208 times that of the truck
Explanation :
KE = 0.5mv^2
For truck
KE = 11000 * 33.3^2 = 12197790J
For astronaut
KE = 42 * 7777.7^2 = 2540689926J
Comparing
2540689926/12197790 = 208.2
NB: speed has been converted to m/s by multiplying with 0.28 I.e 1000/3600
Answer: 0.1524 km
Explanation:
We have to convert to kilometers, and we can do it knowing and :
Hence:
Not necessarily, it just means that the Scientific theory was not complete and needs additional information, research, and ideas.
Answer:
The volume of the gas decreases 140 times.
Explanation:
The equation of state of the ideal gas is described below:
(1)
Where:
- Pressure.
- Volume.
- Molar quantity.
- Ideal gas constant.
- Temperature.
From this formula we construct the following relationship:
(2)
Where:
, - Initial and final pressure.
, - Initial and final volume.
, - Initial and final temperature.
If we know that and , then the change in the volume of the gas is:
The volume of the gas decreases 140 times.
Answer:
Explanation:
As we know that current density is ratio of current and area of the crossection
now we have
so the current through the wire is given as
now we have
here we have
now plug in the values in above equation
now we have
now plug in both limits as mentioned
here R = 2.11 mm