b) particle behavior
c) interference
Answer: Particle Behavior
Explanation:
Answer:
Particle Behavior
Explanation:
I did Gradpoint :)
that exerts a force of magnitude F 12.0 N at an angle
u 25.0°. (a) What is the magnitude of the
block’s acceleration? (b) The force magnitude F is
slowly increased. What is its value just before the
block is lifted (completely) off the floor? (c) What is
the magnitude of the block’s acceleration just before
it is lifted (completely) off the floor?
The magnitude of the block's acceleration is roughly 2.18 m/s². The force required just before the block is lifted off the floor is equal to the weight of the block, 49.05 N. Just before it is lifted, the block's acceleration is still due to the horizontal component of the force.
This problem involves physics concepts related to forces and acceleration of an object on a frictionless surface. The key to solving it involves understanding the relationship between mass, force, and acceleration (Newton's second law) and the concept of vertical and horizontal components of a force.
(a) The magnitude of the block's acceleration can be calculated using the horizontal component of the force (Fh = F cos θ) and Newton's second law (F = ma). So, a = Fh / m = (F cos θ) / m = (12.0 N cos 25) / 5.00 kg ≈ 2.18 m/s².
(b) The force F required to lift the block is equal to the weight of the block mg. Thus, F = m*g = 5.00 kg * 9.81 m/s² = 49.05 N.
(c) Just before the block is lifted off the floor, it is still in contact with the floor so the normal force is not zero. As such, there is no vertical acceleration, so the magnitude of the block's acceleration is still solely due to the horizontal component of F.
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. Calculate the distance between the planes after 6 hours. Give your answer in km, to the nearest km. km
Answer: 2392 kilometers.
Explanation:
To find the distance between the two aircraft after 6 hours, we can use the Pythagorean theorem because they are moving at right angles to each other (one due south and the other due east). Here's how to calculate it:
First, calculate the distance traveled by each aircraft in 6 hours.
1. Aircraft traveling south:
Distance = Velocity × Time
Distance = 85 m/s × (6 hours × 3600 seconds/hour)
Distance = 85 m/s × 21600 s
Distance = 1836000 meters
2. Aircraft traveling east:
Distance = Velocity × Time
Distance = 71 m/s × (6 hours × 3600 seconds/hour)
Distance = 71 m/s × 21600 s
Distance = 1533600 meters
Now, we have the two sides of a right triangle:
- The southbound distance is 1836000 meters.
- The eastbound distance is 1533600 meters.
We can use the Pythagorean theorem to find the hypotenuse (distance between the aircraft):
Distance = √(southbound distance² + eastbound distance²)
Distance = √((1836000 m)² + (1533600 m)²)
Distance ≈ √(3376416000000 m² + 2352089600000 m²)
Distance ≈ √(5728505600000 m²)
Distance ≈ 2391760.78 meters
Now, let's convert the distance to kilometers:
Distance ≈ 2391.76 kilometers
Rounding to the nearest kilometer, the distance between the two aircraft after 6 hours is approximately 2392 kilometers.
Answer:
50% of unpolarised light passes through the first filter because, on average, 50% of the waves are aligned with the fiter's axis. Intensity is reduced by a factor 0.5.
The second filter then reduces the intensity by a factor cos²(θ)
Explanation:
The mass of the liquid remains at 35 g regardless of its location or what it's placed inside.
The mass of a liquid is simply the amount of matter it contains, and it does not change regardless of where or in what you place it. So, if the mass of a certain liquid is given as 35 g, this mass value remains unchanged whether you place it in a beaker, cup, or any other container. Therefore, the mass of the liquid in the beaker is still 35 g, and the mass of the beaker doesn't affect it.
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