What would be the meaning of a nonzero y intercept to a graph of total mass versus volume?

Answers

Answer 1

Answer: It would imply the object has some volume but 0 mass which isn't possible. Negligible masses with volumes can be considered however absolutely 0 mass really means the object doesn't exist at all. Thus, showing the graph is wrong.

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A cessna 150 airplane has a takeoff speed of 28 m/s. determine the minimum length of the runway which would be required for the plane to take off if it averages an acceleration of 1.9 m/s/s.

Answers

Given: Takeoff Speed (u) = 28 m/s

Final velocity (v) = 0.0 m/s

Acceleration (a) = 1.9 m/s²

To calculate: The minimum length of runway (s) =?

Solution: Apply 3rd kinematic equation of motion

v² = u² - 2as

Or, s = ( u² - v²) / 2 a

Or, s = ( 28² - 0²) / 2 × 1.9 m

Or, s = 206.3 m

Hence, the required minimum length of the runway will be 206.3 m

Final answer:

To determine the minimum length of the runway a Cessna 150 airplane would need to take off, you can use a kinematic equation. Plugging in a final velocity of 28 m/s, initial velocity of 0 m/s (since the plane starts from rest), and acceleration of 1.9 m/s/s gives an answer of approximately 207.11 meters.

Explanation:

The subject of your question is related to physics, specifically, kinematics, which studies the motion of objects. In your case, a Cessna 150 airplane needs to accelerate from rest to a speed of 28 m/s for takeoff, with an average acceleration of 1.9 m/s/s, and you're trying to find out the minimum length of the runway required. For this, we can use a kinematic equation.

The equation we can use is the following: v^2 = u^2 + 2as, where v is the final velocity (28 m/s), u is the initial velocity (0 m/s since the plane starts from rest), a is the acceleration (1.9 m/s/s), and s is the distance we want to find out.

When you plug in the known values into the equation, you will get: (28)^2 = (0)^2 + 2 * 1.9 * s. After rearranging the equation, you will have s = [(28)^2 - (0)^2] / 2*1.9 = 207.11 m. Therefore, the minimum length of the runway required for the Cessna 150 airplane to take off is approximately 207.11 meters, assuming constant acceleration and no other factors interfering.

Learn more about Kinematics here:

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What does the doppler effect tell astronomers about the universe

Answers

The doppler effect has red and blue shifts. A red shift means something is moving farther away, and a blue shift means it is moving closer. The universe has a red shift, and since a red shift means that it is moving farther away, this tells astronomers that the universe is still expanding.

What is the magnitude of force required to accelerate a car of mass 1.7 × 10³ kilograms by 4.75 meters/secondÆ?A. 3.6 X 10 ^3 N
B. 1.7X10^3 N
C. 8.1X10^3 N
D. 9.0X10^3 N

Answers

Answer:

Magnitude of force is $F=8.1* 10^3\ N$

Explanation:

It is given that,

Acceleration of car, $a=4.75\ m\s^2$

Mass of car, $m=1.7* 10^3\ kg$

We have to find magnitude of force. It is given by using Newton's second law of motion which states that force is given by the product of mass and acceleration :

F = m a

$F=1.7* 10^3\ kg* 4.75\ m/s^2$