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Questions and Answers
Two forces of 15N and 20N act on an object in opposite directions. What is the net force acting on the object?
Two forces of 15N and 20N act on an object in opposite directions. What is the net force acting on the object?
- 5N in the direction of the 20N force (correct)
- 5N in the direction of the 15N force
- 35N in the direction of the 15N force
- 35N in the direction of the 20N force
A car is moving at a constant velocity. What can be concluded about the forces acting on the car?
A car is moving at a constant velocity. What can be concluded about the forces acting on the car?
- The forces acting on the car are balanced. (correct)
- The car is only experiencing gravitational force.
- There are no forces acting on the car.
- The forces acting on the car are unbalanced and causing acceleration.
A person pushes against a wall. Which of the following is true regarding work in this scenario?
A person pushes against a wall. Which of the following is true regarding work in this scenario?
- Work is done because the person is exerting a force.
- Work is done if the wall moves slightly.
- Work is done, and it depends on how heavy the wall is.
- No work is done because there is no displacement. (correct)
A 2 kg object is lifted 3 meters off the ground. What type of energy has increased, and what is its approximate value?
A 2 kg object is lifted 3 meters off the ground. What type of energy has increased, and what is its approximate value?
A roller coaster car is at the top of a hill. As it rolls down, how does its potential energy and kinetic energy change, assuming negligible friction?
A roller coaster car is at the top of a hill. As it rolls down, how does its potential energy and kinetic energy change, assuming negligible friction?
Considering the electromagnetic spectrum, which type of radiation has a shorter wavelength than violet light?
Considering the electromagnetic spectrum, which type of radiation has a shorter wavelength than violet light?
A metal spoon is placed in a hot cup of coffee. What describes the heat transfer that occurs?
A metal spoon is placed in a hot cup of coffee. What describes the heat transfer that occurs?
In a simple circuit, if the resistance is halved while the voltage remains constant, what happens to the current?
In a simple circuit, if the resistance is halved while the voltage remains constant, what happens to the current?
In a series circuit containing three light bulbs, what happens to the brightness of the other two bulbs if one bulb is removed?
In a series circuit containing three light bulbs, what happens to the brightness of the other two bulbs if one bulb is removed?
Two tectonic plates are sliding past each other horizontally. What type of fault is typically formed in this scenario?
Two tectonic plates are sliding past each other horizontally. What type of fault is typically formed in this scenario?
Which type of seismic wave is characterized by its ability to travel through both solid and liquid materials?
Which type of seismic wave is characterized by its ability to travel through both solid and liquid materials?
What aspect of an earthquake does the Mercalli scale measure?
What aspect of an earthquake does the Mercalli scale measure?
What governmental body provides weather forecasts?
What governmental body provides weather forecasts?
A small chunk of rock is orbiting the sun. It enters the earth's atmosphere and burns up completely. While burning in the atmosphere, it is called a:
A small chunk of rock is orbiting the sun. It enters the earth's atmosphere and burns up completely. While burning in the atmosphere, it is called a:
What is the relative air pressure inside the eye of a typhoon compared to the air pressure outside the eye?
What is the relative air pressure inside the eye of a typhoon compared to the air pressure outside the eye?
An element has 8 protons, 8 neutrons, and 8 electrons. If it loses two electrons to become an ion, what is its new charge?
An element has 8 protons, 8 neutrons, and 8 electrons. If it loses two electrons to become an ion, what is its new charge?
Which of the following subatomic particles contributes the most to the mass of an atom?
Which of the following subatomic particles contributes the most to the mass of an atom?
Which of the following is an example of a mixture, and not a compound or element?
Which of the following is an example of a mixture, and not a compound or element?
An element has an atomic number of 12. How are its electrons arranged in the electron shells?
An element has an atomic number of 12. How are its electrons arranged in the electron shells?
Flashcards
Net force when forces are balanced?
Net force when forces are balanced?
The net force is zero when equal forces act in opposite directions.
Acceleration occurs when?
Acceleration occurs when?
An object accelerates when the forces acting on it are unbalanced.
When is work done?
When is work done?
Work is done only when a force causes displacement of an object.
SI Unit of Work
SI Unit of Work
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Potential energy depends on?
Potential energy depends on?
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Energy Conversion: Rolling Ball
Energy Conversion: Rolling Ball
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Visible color with most energy
Visible color with most energy
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Thermal energy flow direction?
Thermal energy flow direction?
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Ohm's Law
Ohm's Law
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Bulb Failure in Series Circuit
Bulb Failure in Series Circuit
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Strike-slip Fault
Strike-slip Fault
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Fastest Seismic Waves
Fastest Seismic Waves
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Earthquake damage scale?
Earthquake damage scale?
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PAR
PAR
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Meteorite
Meteorite
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Typhoon's Eye
Typhoon's Eye
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Atomic Number
Atomic Number
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Neutron Charge
Neutron Charge
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Water
Water
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Configuration of Neon
Configuration of Neon
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Study Notes
Forces and Motion
- When two 10N forces act on an object in opposite directions, the net force is 0N.
- An object accelerates when forces acting upon it are unbalanced.
- Work is done only when a force causes displacement of an object.
- The SI unit of work is the Joule.
- Potential energy is dependent on both height and mass.
- A ball rolling down a hill converts potential energy into kinetic energy.
- Violet is the visible color with the most energy.
- Thermal energy flows from hot to cold.
- Ohm's Law relates voltage, current, and resistance in a circuit.
- In a series circuit, if one bulb burns out, all bulbs turn off.
Earth and Space
- A strike-slip fault is where rocks slide past each other horizontally.
- P-waves are the fastest type of seismic waves.
- The Mercalli scale measures earthquake damage.
- PAR stands for Philippine Area of Responsibility.
- A meteorite is a meteor that hits the Earth.
- The eye of a typhoon is the part with calm weather.
- The atomic number of an element equals the number of protons in the nucleus.
- Neutrons have a neutral charge.
- Water (Hâ‚‚O) is a compound.
- Neon, with 10 electrons, has an electron configuration of 2,8.
Critical Thinking
- If voltage doubles in a circuit, the current will also double.
- Condensation is the change of state from gas to liquid.
- Melting ice is a physical change.
- In a parallel circuit, the total resistance is less than the smallest resistor.
- S-waves cannot travel through liquids.
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