4. Two cars are travelling along a straight road, as shown below. The pass each other at pointB and then continue in opposite directions. The red car travels for 0.25 hours from point B
to point C at a constant velocity of 32 km/hr east. The blue car travels for 0.25 hours from
points B to point D at a constant velocity of 48 km/hr. How far has each car traveled from
point B? What is the position of each car relative to the origin, point A?
Answers
Using the speed - time relation, the distance moved by the cars from point B are 8 kilometers and 12 kilometers respectively.
Distance of car 1from Point B :
- Speed of car × time traveled from point B
Distance traveled from point B = 32 × 0.25 = 8km
Distance of car 2from Point B :
- Speed of car × time traveled from point B
Distance traveled from point B = 48 × 0.25 = 12km
The diagram isn't attached, hence question 2 cannot be answered accurately.
Therefore, the distance traveled from point B by car 1 and 2 is 8km and 12 km respectively.
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Final answer:
The red car has traveled 8 km east of point B, while the blue car has traveled 12 km west of point B.
Explanation:
To determine how far each car has traveled, we need to use the formula: distance = speed × time. The red car travels for 0.25 hours at a constant velocity of 32 km/hr, so the distance it travels is: distance = 32 km/hr × 0.25 hr = 8 km. The blue car travels for the same amount of time at a constant velocity of 48 km/hr, so the distance it travels is: distance = 48 km/hr × 0.25 hr = 12 km.
The position of each car relative to the origin, point A, is as follows: The red car is 8 km east of point A (since its velocity is in the east direction). The blue car is 12 km west of point A (since its velocity is in the opposite direction to the east).
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A gas has an initial volume of 2.5 L at a temperature of 275 K and a pressure of 2.1 atm. The pressure of the gas increases to 2.7 atm, and the temperature of the gas increases to 298 K.The final volume of the gas, rounded to the nearest tenth, is.
Answers
Answer:
17.23L
Explanation:
The table lists pressure and volume values for a particular gas. Which is the best estimate for the value of V at P = 7.0 × 103 pascals?
P (pascals) V (liters) 1/v
1. 5.0 × 10^3 6.0 0.16
2. 1.5 × 10^4 3.0 0.33
3. 2.0 × 10^4 2.0 0.5
4. 2.5 × 10^4 1.5 0.66
if we are to plot the above data in a linear graph, the equation of a line graph below can be used
y-y1=m(x-x1)
y-y1=(x-x1)..............1
from the ideal gas law
pressure is inversely proportional to volume as nRT is the constant of proportionality
PV=nRT
P=nRT/V
from equation 1
let y1= 1.5 × 10^4
y2= 2.0 × 10^4
x1=0.33
x2= 0.5
y-1.5x10^4=2.0 × 10^4-1.5 × 10^4 /(0.5-.33)(x-0.33)
y-1.5x10^4=29411(x-0.33)
y=15000-9705.88+29411x
y=5294+29411x
at 7*10^3
7*10^3=5294+29411x
x=0.058
recall that x=1/V
inverse of both sides gives volume to be
V=17.23L
I think the question need to use extrapolation. FInd the linear function of the first and second data. And then, the anwser is 5.4 liters.
Answers
Hope this helps!
Answers
Answer:
0 J
Explanation:
Kinetic energy is defined as:
KE = 1/2 m v²
where m is mass and v is velocity.
The car starts at rest, so it has zero velocity. Therefore, its initial kinetic energy is 0 J.
b) Explain which one(s) hit the ground last
Answers
Explanation:
Balls A and C have the same initial vertical velocity of zero. Therefore, they land at the same time.
Ball B has a positive initial vertical velocity, so it hits the ground last.
Answers
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10N
Explanation:
Applying the Hooke law:
F = kx
F: Force
k: stiffness coefficient
x: stretched distance
F = 10N/m x 1m = 10N
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