Which of the following best explains why comets speed up when closer to the Sun?

Conservation of energy and Kepler's Second Law

The Sun exerts less force on them when closer

Orbits become circular near the Sun

The comet loses mass near the Sun

Which of the following correctly pairs Kepler's Laws with its description?

Third Law – Relationship between orbital period and distance

First Law – Equal areas in equal time

Second Law – Elliptical orbits

Third Law – Planets move in circles

Second Law – Sun at one focus

Which of the following is the best definition of Simple Harmonic Motion (SHM)?

A periodic motion where restoring force is proportional to displacement

A motion that increases uniformly with time

A random motion with varying acceleration

A motion that depends only on velocity

Which scenario indicates damping in SHM?

C. A guitar string vibrating in open air

A. A pendulum swinging in vacuum

B. A spring oscillating without friction

D. An ideal mass-spring in space

E. A tuning fork vibrating endlessly

If two identical pendulums are taken, one on Earth and one in a spacecraft far from gravity, how will they compare?

Pendulum in spacecraft has infinite period

Pendulum in spacecraft has zero period

Pendulum on Earth stops oscillating

Both stop oscillating instantly

When comparing sound traveling in air, water, and steel, which conclusion is correct about speed of sound?

It travels fastest in steel due to high particle density and strong bonding

It travels fastest in air because of low density

It travels fastest in water because it is a liquid

It travels equally in all three media

It does not depend on the medium at all

Which of the following best describes the relationship between frequency and wavelength in a wave, assuming the velocity is constant?

As frequency increases, wavelength decreases.

As frequency increases, wavelength increases.

As frequency increases, wavelength stays the same.

Frequency and wavelength are not related.

Wavelength depends only on amplitude, not frequency.

How does the amplitude of a sound wave affect its loudness?

Larger amplitude produces a louder sound.

Smaller amplitude produces a louder sound.

Amplitude has no effect on loudness.

Loudness only depends on frequency.

Loudness is determined only by wave velocity.

A student shakes one end of a rope up and down, creating waves that travel horizontally. What type of wave is formed, and why?

Transverse, because particles move perpendicular to energy transfer.

Longitudinal, because particles move in the same direction as energy.

Mechanical, because it requires a medium.

Electromagnetic, because it can travel without a medium.

Standing wave, because it doesn’t transfer energy.

A student claims that the Doppler Effect can explain why a car engine sounds different when it passes by a listener. Which of the following provides the best evaluation of this claim?

The claim is correct because relative motion between source and observer changes the observed frequency.

The claim is incorrect because sound frequency does not change.

The claim is correct because the sound’s speed increases as the car moves.

The claim is incorrect because only amplitude affects sound perception.

The claim is correct because sound travels faster when objects are moving.

A police siren emits a constant frequency as it moves toward a stationary observer. Which of the following best explains why the observer hears a higher pitch?

C. The sound waves are compressed, decreasing wavelength and increasing frequency.

A. The source produces a higher frequency as it moves.

B. The observer’s ear becomes more sensitive to higher pitches.

D. The air molecules vibrate faster when the siren approaches.

E. The observer is moving closer to the sound waves.

A student claims: “If you double your distance from a sound source, the intensity of the sound will be reduced to half.” Which of the following is the best evaluation of the student’s claim?

Incorrect, because intensity decreases with the square of the distance, so it becomes one-fourth.

Correct, because intensity is directly proportional to distance.

Correct, because loudness always decreases linearly with distance.

Incorrect, because intensity remains constant regardless of distance.

Correct, because the inverse-square law only applies to light waves, not sound waves.

Two observers stand at different distances from a loudspeaker. Observer A is 3 meters away, while Observer B is 6 meters away. A second student argues: “Observer B should hear the sound one-half as intense as Observer A.” Which evaluation is most accurate?

The claim is incorrect, because Observer B hears the sound one-fourth as intense.

The claim is correct, because doubling distance halves the intensity.

The claim is correct, because sound intensity only depends on amplitude.

The claim is incorrect, because both observers hear the same intensity if air is uniform.

The claim is correct, because sound intensity does not follow the inverse-square law.

An ambulance moves toward a listener at rest. The siren produces a frequency of 500 Hz. Which statement best explains what the listener perceives?

The listener hears a frequency higher than 500 Hz because wave crests are compressed.

The listener hears exactly 500 Hz because the source frequency never changes.

The listener hears a lower frequency because the sound energy decreases with distance.

The listener hears no difference unless the ambulance passes directly in front.

The listener hears the same wavelength but at a higher frequency.

When a sound source moves toward a stationary listener, what happens to the frequency and wavelength of the sound perceived?

Frequency increases, wavelength decreases.

Frequency decreases, wavelength increases.

Frequency stays the same, wavelength increases.

Frequency decreases, wavelength decreases.

Frequency increases, wavelength increases.

If a liquid has a specific gravity of 0.8, what does this mean compared to water?

The liquid is less dense than water.

The liquid is heavier than water.

The liquid has the same density as water.

The liquid has twice the density of water.

The liquid's density cannot be compared to water.

A teacher asks students to design an experiment that compares the densities of oil and water. Which of the following plans best demonstrates an original and correct design?

Measure equal volumes of oil and water, weigh them, and compare their masses.

Pour both liquids into a container and observe which one stays on top.

Shake oil and water together and see if they mix.

Heat both liquids and record their boiling points.

Place a ball in both liquids and check if it floats.

A container holds two liquids of different densities. At the same depth, in which liquid will the pressure be greater?

Both liquids produce the same pressure

Pressure depends only on the shape of the container

Pressure is not affected by density at all

A student claims: "The pressure at the bottom of a container depends only on the total weight of liquid, not on its depth." Which evaluation is most accurate?

The claim is incorrect; pressure depends on depth and density, not total weight.

The claim is correct because weight determines pressure directly.

The claim is correct because heavier liquids always create more pressure.

The claim is incorrect; pressure depends only on the surface area of the container.

The claim is correct if the container is very wide.

A mechanic uses a hydraulic lift to raise a car. A student claims: "The lift works because pressure applied to the small piston is transmitted equally to the larger piston, allowing a small force to lift a heavy car." Which evaluation is most accurate?

The claim is correct; it explains Pascal's principle accurately.

The claim is incorrect; pressure cannot be transmitted through fluids.

The claim is correct, but only when the pistons have the same area.

The claim is incorrect; the lift works because air pushes the car upward.

The claim is correct, but only when the fluid is compressible.

According to Archimedes' principle, what causes an object to float in water?

The buoyant force equals or is greater than the weight of the object.

The object is heavier than the water it displaces.

The object displaces water equal to its own volume.

The object has less surface area than water.

The buoyant force is always less than the object's weight.

A block of wood floats in water. Which of the following statements best explains why it floats?

The buoyant force equals the weight of the wood.

The wood has the same density as water.

The buoyant force is less than the weight of the wood.

The density of water is less than that of the wood.

The buoyant force does not depend on displaced fluid.

An egg is placed at the bottom of a bowl filled with water. Salt is slowly added to the water until the egg rises and floats. From this experiment, one concludes that _______.

The density of salt water exceeds the density of egg

Buoyant force does not always act upward

Salt helps the water, keeping the egg at the bottom

Calcium in the eggshell is repelled by sodium chloride

A student places a solid block into a container of water. The block seems lighter when submerged, and a spring balance shows that the loss of weight is exactly equal to the weight of the displaced water. Which principle best explains this observation?

A body immersed in a fluid loses weight equal to the weight of the fluid displaced

The pressure in a fluid increases as velocity increases

Fluids at rest exert equal pressure in all directions

Fluid density has no effect on buoyancy

A body submerged in a fluid experiences pressure proportional to velocity

Maria places a thermometer in a cup of hot coffee. After a while, she uses the same thermometer to measure the temperature of her tea, and it shows the same reading. She concludes that the coffee and tea are at the same temperature without directly comparing them. In the concept of Zeroth Law, why is the Zeroth Law more fundamental than the First and Second Laws?

It defines temperature measurement

A metal spoon is placed in a cup of hot coffee. After a few minutes, the spoon no longer feels hotter or cooler than the coffee when touched. What does this situation indicate?

The spoon and coffee have reached the same temperature

The spoon and coffee now have equal heat content

The spoon and coffee stop conducting electricity

The spoon and coffee emit the same radiation

The spoon and coffee expand equally

Which of the following best describes thermal expansion?

Increase in length, area, or volume of a material when heated

Increase in mass of a material when heated

Increase in chemical composition when heated

Increase in density of a material when heated

Increase in entropy when heated

A blacksmith places an iron ring in a furnace to heat it before fitting it onto a wooden wheel. After some time in the fire, the iron ring becomes slightly larger in diameter and can be easily placed around the wheel. Why does the heated metal ring expand?

Decrease in intermolecular attraction due to increased vibrations

Increase in the number of molecules

During a bridge construction project, both a steel rod and an aluminum rod of equal length are installed side by side at 20°C. As the temperature rises in the afternoon, the engineers notice that the aluminum rod expands more in length than the steel rod. Why does the aluminum rod expand more?

It has a greater coefficient of linear expansion

It has lower specific heat capacity

According to the First Law of Thermodynamics, which of the following best describes the conservation of energy in a closed system?

Energy can neither be created nor destroyed.

Energy always increases in a closed system.

Energy is only conserved in mechanical systems.

Energy can be destroyed if work is done on the system.

Energy can be created as long as it is transformed into heat.

When applying the First Law of Thermodynamics to analyze a thermodynamic process, what does a positive value for work done by the system imply?

The system is doing work on its surroundings.

The system is losing energy as heat.

The system is undergoing a phase change.

The surroundings are doing work on the system.

GENERAL PHYSICS 1

Authored by MARCHIN BACERDO

Biology

University

Used 13+ times

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50 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

According to Newton's Law of Universal Gravitation, the gravitational force between two masses is:

Directly proportional to the square of the distance between them

Inversely proportional to the product of their masses

Directly proportional to the product of their masses

Independent of the distance between them

Inversely proportional to their velocity

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to the gravitational force if the mass of one of the objects is tripled?

It decreases to one-third

It remains constant

It doubles

It triples

It becomes one-ninth

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following best describes the nature of gravitational force?

Always repulsive

Always attractive

Attractive or repulsive depending on mass

Independent of distance

Zero in outer space

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following best describes the orbital motion of planets around the Sun?

Newton's First Law of Motion

Newton's Third Law of Motion

Newton's Law of Universal Gravitation

Coulomb's Law

Kepler's First Law

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following statements is TRUE about gravitational force?

It only acts on Earth

It decreases linearly with distance

It depends on the medium between two objects

It acts between any two objects with mass

It is stronger than electrostatic force

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does Kepler's Third Law mathematically relate?

Orbital speed and distance

Orbital period and distance from the Sun

Mass of the planet and orbital speed

Gravity and mass of the Sun

Distance and eccentricity

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If Planet A is farther from the Sun than Planet B, then according to Kepler's Third Law:

Planet A orbits faster than Planet B

Planet A has the same orbital period as Planet B

Planet A has a shorter orbital period than Planet B

Planet A has a longer orbital period than Planet B

Both planets orbit with the same speed

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GENERAL PHYSICS 1

According to Newton's Law of Universal Gravitation, the gravitational force between two masses is:

What happens to the gravitational force if the mass of one of the objects is tripled?

Which of the following best describes the nature of gravitational force?

Which of the following best describes the orbital motion of planets around the Sun?

Which of the following statements is TRUE about gravitational force?

What does Kepler's Third Law mathematically relate?

If Planet A is farther from the Sun than Planet B, then according to Kepler's Third Law:

Which of the following best explains why comets speed up when closer to the Sun?

Kepler's First Law states that planets move around the Sun in what type of path?

Which of the following correctly pairs Kepler's Laws with its description?

Access all questions and much more by creating a free account

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