Which of the following could classify as a non-essential need according to the hierarchy of needs? A. healthy food B. human contact C. more sleep D. new clothes
Answers
Answer:
D. New Clothes
Related Questions
1. In which medium does sound travel the fastest? a. salt water b. fresh water c. air d. cast iron 2. A wave has a wavelength of 10 mm and a frequency of 5 hertz. What is its speed? a. 50 mm/s b. 50 hertz/s c. 2 mm/s d. 0.50 mm/s 3. How does reflection differ from refraction and diffraction? a. Reflection is the only process in which the wave does not continue moving forward. b. Reflection is the only process that involves a change in the wave. c. Reflection affects all types of mechanical waves, but refraction and diffraction do not.
You are standing in a moving bus, facing forward, and you suddenly fall forward as the bus comes to an immediate stop. the force that pushes forward on you as the bus stops is
Which one of the following types of electromagnetic radiation causes certain substances to fluoresce? A. Cosmic raysB. Ultraviolet rays(C. X rays)D. Infrared wavesA virtual image produced by a lens is always A. located in front of the lens.(B. located in the back of the lens.)C. smaller than the object.D. larger than the object.Reflecting telescopes are popular because they're A. more durable than a refracting telescope.B. more powerful than a refracting telescope.C. easier to build than a refracting telescope.(D. smaller than a refracting telescope.)The unit for measuring the rate at which light energy is radiated from a source is the A. lux.B. lumen.(C. candela.)D. AngstromA magnifying glass is an example of a _______ lens. A. plano-concave(B. plano-convex)C. double-concaveD. convergingmy answer is in ( ) and the answers are wrong please tell me the correct answer because i dont have a clue
After the cart bounces, how far does it roll back up the ramp?
Answers
the spring will be compressed by 0.3072 m
Explanation:
acceleration of elevator=3 m/s²
mass of student= 60 Kg
spring constant=2.5 x 10³ N/m
the force on the student is given by F = m ( g +a)
F=60 (9.8+3)
F=768 N
now the formula for spring force is given by
F= k x
768= 2.5 x 10³ (x)
x=0.3072 m
Final answer:
The spring on which a 60kg student is standing in an elevator accelerating at 3.0 m/s² is compressed by approximately 30.72 cm. This is calculated using Hooke's Law, considering both the weight of the student and the additional force due to the elevator's acceleration.
Explanation:
The situation you've described involves Hooke's Law, which states that the force needed to extend or compress a spring by some distance is proportional to that distance. In this case, we can consider the student's weight plus the extra force from the acceleration of the elevator.
To determine the compression of the spring, we use the equation F = kx, where F is the total force exerted on the spring, k is the spring constant, and x is the amount the spring is compressed. Here, the total force (F) includes the weight of the student and the force due to the elevator's acceleration. So, F = mg + ma, where m is the mass of the student, g is the gravity (9.8 m/s²), and a is the acceleration of the elevator.
Substituting the given values, we get F = (60 kg)(9.8 m/s²) + (60 kg)(3.0 m/s²) = 768 N. The compression of the spring (x) is now obtained by rearranging the Hooke's law formula to x = F/k.
This results in x = 768 N ÷ 2.5 x 10³ N/m = 0.3072 m or 30.72 cm. Thus, the spring is compressed by approximately 30.72 cm due to the combined force of the student's weight and the accelerating elevator.
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Answer in units of rad/s2
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One rev/s is
Answer:
not sure lol
Explanation:
ummmmmm look it up on peersanswer.com
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The correct answer is Kepler
Final answer:
The concept that planets move in elliptical orbits was established by Johannes Kepler in his First Law of Planetary Motion. This significant idea disrupted the earlier belief of circular orbits and brought tremendous knowledge in our solar system understanding.
Explanation:
The fact that the orbits of planets are elliptical was part of the planetary laws developed by the renowned astronomer and mathematician Johannes Kepler. Damaging the former belief of circular orbits, Kepler, based on detailed and exhaustive astronomic observations, established his First Law of Planetary Motion which stated that planets move in elliptical orbits with the Sun at one of the two foci. This was a significant breakthrough in understanding our solar system and continues to be fundamental in physics and astronomy today.
Learn more about Kepler's Laws,
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Answer:
???????????????????????
Explanation:
The x - component of the initial velocity is given as:
Ux = Vi cos theta
Ux = 100cos 60
Ux = 50m/s
Answers
Side "p" is opposite Angle P
Side "d" is opposite Angle D = 45º + 23º = 68º
Side "q" is opposite Angle Q
Use the Law of Cosines:
d² = p² + q² − 2 • p • q • cos(D)
d² = (4.24)² + (4.24)² − 2 • (4.24) • (4.24) • cos(68º)
d² = 2(4.24)² − 2(4.24)² • cos(68º)
d² = 2(4.24)² • [ 1 – cos(68º) ]
d = 4.74 ft
The distance PQ is 4.74 feet.
Calculations and Parameters:
Triangle PDQ has:
- Side "p" is opposite Angle P
- Side "d" is opposite Angle D = 45º + 23º = 68º
- Side "q" is opposite Angle Q
If we use the Law of Cosines:
d² = p² + q² − 2 • p • q • cos(D)
d² = 2(4.24)² • [ 1 – cos(68º) ]
d = 4.74 ft
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Answers
Answer=Oil