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Physics

Uncover the laws that govern the universe, from the smallest particles to the vastness of space. Physics seeks to explain the fundamental mechanisms of the natural world.

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Questions
Q: True or false energy is required in order to produce any sound
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Q: What is the momentum of a 920-kg car moving at a speed of 25 ms
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Q: Two small space probes each have a mass of 100 kg. The momentum of one of the probes is 1100000 kgms. What is its velocity
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Q: Two ice skaters initially at rest have pushed off each other and are moving in opposite directions with equal speeds. What is known about their masses
1 answer
Q: A 50 kg cannon ball is shot horizontally from a cannon at a speed of 80 ms. At this speed what will its kinetic energy be
1 answer
Q: What is directly responsible for matter moving an changing inside a bear's body
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Q: A 45.0 kg skater is skating down a hill on roller blades at a speed of 10.0 ms. What is the kinetic energy of the skater
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Q: Suppose an impulse is applied to an object. What can you assume
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Q: Sara walks part way around a swimming pool. She walks 50 yards north then 20 yards east then 50 yards south. The magnitude of her total displacement during this walk is
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Q: A negative slope on the velocity vs. time graph indicates a negative acceleration
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Q: What is it called when energy is transferred by particles or waves
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Q: Choose the most appropriate name for the function described below. The output from a machine depends on the input to the machine.
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Q: Are waves on a rope and light waves are two examples of longitudinal waves.
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Q: Wh yis light refracted when it passes from air to water
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Q: How can knowledge of projectile motion can make us more competitive
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Q: Give the meaning of intensity
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Q: Why does an inflated ballon not sink in water
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Q: How much milk required for 1 kg curd
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Q: How does the sunlight indirectly generate waves
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Q: Energy can never be created or destroyed just coverted from one form to another describes
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Q: What is the efficiency principle
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Q: One pound rigatoni pasta in kilogram
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Q: What is the minimum time needed to lift a 2000-N weight 10 meters using a motor with a maximum power rating of 8000 watts
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Q: Weight or volume of a fluid displaced bya floating body
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Q: A 1.5m wire carries a 3 A current when a potential difference of 75 V is applied. What is the resistance of the wire
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Q: Can moving electrons through a magnetic field can produce an electric current
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Q: Alpha helices and beta-pleated sheets are examples of .
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Q: A machine is used to fill bags with sand. The average weight of a bag filled with sand is 22.3 pounds. Write an absolute value function describing the difference between the weight of an average bag o
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Q: Not allowing light to pass through'
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Q: How long does it take a 10 kHz sine wave to complete 100 cycles
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Q: What is the charge on the STEEL if you rub it with VINYL
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Q: Why do we use simple machines like the lever
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Q: Which kind of energy do you use to power a washing machine
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Q: Two boys were pulling the ends of a rope in opposite directions and neither of them moved from their positions Explain why this is so
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Q: The smaller the mass of an object the blank it's inertia
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Q: How is energy transformed when you rub your hands together
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Q: Choose the correct formula for determining specific heat.
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Q: Choose the best definition for this term. specific heat
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Q: How much does a stopwatch weigh
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Q: The energy in biomass is used to make electricity. How is the energy stored in biomass
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Q: What is a back and forth motion called
1 answer
Q: Changing the mass or volume of an object changes its density and
2 answers
Q: Is to feel a verb
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Q: Even though a brick weighs less than a metal-hull ship a brick in a bathtub sinks but a metal-hull ship in the ocean floats why
2 answers
Q: How high or low you think the sound is called what
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Q: Are based on connections. They are organized around a focal point and include the areas linked to the focus through patterns of trade communication andor transportation routes.
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Q: When a pitcher is holding a baseball the ball has energy. After the pitcher throws the ball the ball has energy.
2 answers
Q: How many vibrations are there in 1 wavelength
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Q: 29) Radiation burns which cause delayed irreversible changes of the skin can be caused by high doses of what form of ionizing radiation
1 answer
Q: The langth around a recrangle is called the
3 answers
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