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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: How do the tension of the cord and the force of gravity affect a pendulum
1 answer
Q: According to the Hooke and law formula the force is proportional to what measurement
1 answer
Q: What kind of high energy radiation is released from a nuclear reaction
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Q: List two details that support the idea that matter has properties that can be observed
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Q: As a wave nears the shore its characteristics begin to change when the water depth is half of its .
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Q: What if your mass is 75kg. You stand on a scale in an elevator that is about to go down. Starting from rest the elevator accelerates at 2.0ms squared for 2.0s then travels at a constant speed. What do
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Q: If the temperature is 273 in kelvins what is the degrees in celsius
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Q: Describe the behavior of light that enables magnifying lenses and contact lenses to bend light rays.
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Q: What does absolute zero
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Q: What of the following is a form of stored energy
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Q: Which state of matter is made up of particles that are held firmly in place
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Q: If an object is suspended in a fluid neither sinking nor floating then
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Q: A 10 kg rock is pushed off the edge of a bridge 50 meters above the ground. what was the kinetic energy of rock befor it began to fall
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Q: Is climbing mountain an example of force and motion
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Q: Newton's Second Law of Motion states that when an unbalanced force acts on an object the object decelerates.
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Q: Newton's First Law of Motion states that an object at rest tends to stay at rest and an object in motion stays in motion with a force that is equal to its propelling force.
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Q: A golfer tees off and hits a golf ball at a speed of 31 ms and at an angle of 35 degrees. What is the vertical velocity component of the ball Round the answer to the nearest tenth of a ms.
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Q: Boy is pushing a 30 kg box across the floor at a constant velocity of 0.5 ms. How much work in Joules is done by the boy on the box if the velocity change to 1.0 ms
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Q: The force of gravity on a projectile in motion is considered positive.
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Q: A player kicks a soccer ball from ground level and sends it flying at an angle of 30 degrees at a speed of 26 ms. How far did the ball travel before it hit the ground Round the answer to the nearest m
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Q: How waves move at angles to the direction of movement
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Q: The brain waves that characterize the sense of relaxed wakefulness we experience while lying on a beach or in a hammock or when resting after a big meal are waves.
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Q: Why is white light made of many colours
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Q: Example pushing on a wall
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Q: The gravitational force between two masses is 36 N. What is the gravitational force if the distance between them is tripled
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Q: The fine adjustment knob is used to focus an image on what powers
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Q: In an isolated system two cars each with a mass of 1000 kg collide. Car 1 is initially at rest while Car 2 was moving at 10 ms. They move off together. What is their speed
2 answers
Q: What is between the north and south ploe and 60 begres latitude buzzing along in cold dry dense air horizanatl air currens are called
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Q: Which situation would produce a total displacement of zero
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Q: At a given moment in time instantaneous speed can be though of as the magnitude of instantaneous of what
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Q: The nuclear accident at Chernobyl was than the accident at Three Mile Island.
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Q: Hot air rises due to its difference in
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Q: The term for free electrons in metals transferring energy by colliding with other atoms or electrons
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Q: What is the pressure of an air conditioning unit on a 90 degree day
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Q: The term for free electrons in metals transferring energy by colliding with other atoms or electrons is
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Q: Liquids that do not mix form into layers when they have different densities.
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Q: How much time would it take for the sound of thunder to travel 1500 meters if sound travels at a speed of 330 meters second
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Q: Distance is the magnitude of average volicity
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Q: If your speed changes from 10 kmh to 6 kmh you have a(n) acceleration.
1 answer
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
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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
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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
1 answer
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
2 answers
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