Physics

What represents the area under a speed-time graph?

Which of the following reduces friction between two surfaces?

How do you calculate the resultant of two forces acting in the same direction?

A $500\ N$ person stands on one leg. The area of the foot is $0.02\ m^2$. What is the pressure?

An experiment is conducted to compare the acceleration of four different objects when various resultant forces are applied. Based on the values shown in the diagram, which object will experience the greatest acceleration?

A cyclist's journey is represented by the sequence of points on a velocity-time graph as shown in the diagram. What is the distance traveled by the cyclist during Phase 2 of the journey?

If an object is moving with a constant acceleration of $2\ m/s^{2}$, its velocity:

Which of the following describes a pair of Action-Reaction forces according to Newton's Third Law?

A engine has a power output of $5.0 \text{ kW}$. It is used to lift a load of $200 \text{ kg}$ through a vertical height of $15 \text{ m}$. If the process takes $10 \text{ s}$, what is the efficiency of the engine?

A pendulum bob is released from a height $h$. At the bottom of its swing, the string hits a peg located at a distance $0.6h$ below the pivot. To what height does the bob rise on the other side?

What is the weight of a $60\ kg$ person on the Moon, where $g = 1.6\ N/kg$?

If a piece of material is heated and its volume expands while its mass remains constant, what happens to its density?

An object of mass $15\ kg$ is placed on a scale. If the scale reads $150\ N$, what is the local gravitational field strength?

A stone is lowered into a displacement can (eureka can) filled to the spout with water. The water that overflows is collected in a measuring cylinder. What does the volume of this overflow water represent?

A solid metal sphere has a volume of $250\ cm^3$ and a density of $8.0\ g/cm^3$. What is the weight of this sphere on the surface of a moon where the gravitational field strength is $4.0\ N/kg$?

A beam balance is in equilibrium with two blocks made of different materials. Block A has a volume of $600\ cm^3$ and a density of $1.2\ g/cm^3$. Block B has a volume of $150\ cm^3$. What is the density of the material used for Block B?

Mercury has a density of $13.6\ g/cm^3$. What is the mass of $10\ cm^3$ of mercury?

A block of material with density $4000\ kg/m^3$ is shaped into a cube with a side of $0.1\ m$. What is the weight of this cube on Earth ($g = 10\ N/kg$)?

A $100\ g$ mass is hung from a spring on Earth ($g = 10\ N/kg$) and the spring stretches by $5\ cm$. If the same mass and spring are taken to a planet where $g = 25\ N/kg$, what will be the extension?

Calculate the mass of a solid cone with a base radius of $3\ cm$, a height of $10\ cm$, and a density of $2.7\ g/cm^3$. (Volume of cone = $\frac{1}{3}\pi r^2 h$; use $\pi = 3.14$)

Which of these is a common application of the transmission of pressure in liquids?

In a liquid, if the density doubles but the depth remains the same, the pressure will:

A force of $60\ N$ acts on an area of $12\ m^{2}$. What is the pressure?

What happens to the pressure of air in a car tire on a very cold morning?

Which of the following units is used for pressure?

A water tank is $5\text{ m}$ high. If the pressure at the bottom is $50\text{ kPa}$, what is the pressure halfway down the tank? (Ignore atmospheric pressure)

What happens to the pressure of a gas if its volume is doubled and its absolute temperature is also doubled?

A container is filled with three layers of immiscible liquids: Water ($10\text{ cm}$), Oil ($10\text{ cm}$, density $800\text{ kg/m}^3$), and Mercury ($10\text{ cm}$, density $13600\text{ kg/m}^3$). What is the pressure at the very bottom, excluding atmospheric pressure? ($g = 10\text{ m/s}^2$)

In a hydraulic system, Piston A (area $4\text{ cm}^2$) is connected to Piston B (area $20\text{ cm}^2$). A force of $50\text{ N}$ is applied to A. If there is a constant frictional force of $10\text{ N}$ opposing the motion of Piston B, what is the actual lifting force exerted by B?

A closed gas cylinder can withstand a maximum internal pressure of $5.0 \times 10^6\text{ Pa}$. It currently contains gas at $2.0 \times 10^6\text{ Pa}$ and a volume of $0.1\text{ m}^3$. If more gas is pumped in at constant temperature, what is the maximum volume the gas would have occupied at the original pressure?

Calculate the efficiency of a motor that uses $500\,J$ of total energy to produce $200\,J$ of useful kinetic energy.

Which of these energy stores is primarily found in food and fuels?

If a crane lifts a load more quickly, which of the following is true?

What energy transformation occurs in a solar cell?

A ball is released from point P. If there is no friction, what will be its kinetic energy at point Q?

Which energy store is increased when you compress a spring?

A person of mass $60\,kg$ runs up a flight of stairs $5\,m$ high. If the power output is $300\,W$, how long did it take? ($g = 10\,N/kg$)

A ball is thrown at an angle. At its highest point, which of the following is true regarding its energy (ignore air resistance)?

A $50\,kg$ crate is pushed across a floor at a constant speed of $1.5\,m/s$ by a force of $100\,N$. How much work is done by the pushing force in $10\,seconds$?

Which of the following units is NOT equivalent to the Watt?

What happens to the temperature of a gas if it is compressed rapidly?

Which of the following is an example of conduction?

If the temperature of a gas in a container is increased, what happens to the collisions of the gas molecules with the walls?

What is the main reason for using a vacuum between the two glass walls of a thermos flask?

Two objects are in 'thermal equilibrium' when:

If a thermometer is 'linear', what does this mean regarding its scale?

A thermometer has a range from $-10^{\circ}C$ to $110^{\circ}C$. What does the term 'range' refer to?

A $0.2\text{ kg}$ sample of a solid substance is heated from $20^{\circ}C$ using a heater with a constant power of $100\text{ W}$. The diagram shows the temperature and time coordinates at key points during the heating process. Based on this information, what is the specific heat capacity of the substance in its liquid state?

A fixed mass of gas is in a container. If the volume is halved and the pressure is doubled, how does the average kinetic energy of the molecules change?

The specific latent heat of vaporization of a substance is always greater than its specific latent heat of fusion. Why?

A wave has a frequency of $10$ Hz. What is the time period of this wave?

When waves pass through a gap, they spread out. What is this effect called?

In which state of matter does sound usually travel the slowest?

Which property of a wave does NOT change when it passes from one medium into another during refraction?

A sound wave travels from air into a body of water. In air, the wave speed is $340\text{ m/s}$ and its wavelength is $1.7\text{ m}$. If the speed of sound in water is $1500\text{ m/s}$, what is the wavelength of the sound wave when it enters the water?

A person standing $300$ m from a wall claps their hands. If the speed of sound is $330$ m/s, how long does it take for them to hear the echo?

A light ray enters a parallel-sided glass block from air. After the ray emerges back into the air from the other side, how is the emergent ray related to the original incident ray?

A monochromatic ray of light is incident at $60^{\circ}$ on a glass-air boundary. The refractive index of the glass is $1.5$. What is the angle of refraction?

Which of the following statements about real and virtual images is true?

A student standing between two parallel cliffs claps his hands. He hears the first echo after $1.5\text{ s}$ and the second echo after $2.5\text{ s}$. What is the distance between the cliffs? (Speed of sound = $340\text{ m/s}$)

Which of the following is used to detect the presence of static charge?

What describes the relationship between current and potential difference for an Ohmic conductor at constant temperature?

What is the conventional direction of electric current?

Which effect of an electric current is used in a standard electric heater?

A transformer is $100\%$ efficient. It has an input of $230\, V$ and $2.0\, A$. If the output voltage is $46\, V$, what is the output current?

Two resistors are connected in parallel to a battery. Resistor X has a resistance of $10\, \Omega$ and Resistor Y has a resistance of $20\, \Omega$. Which statement is true?

An AC generator uses slip rings rather than a split-ring commutator. What is the result of using slip rings?

A logic gate has two inputs. The output is 0 only if both inputs are 1. Which gate is this?

What happens to the magnetic field lines of a solenoid when the direction of the current is reversed?

In a household ring main circuit, where are the fuses or circuit breakers typically located?

What is the space around a magnet where a magnetic force can be detected called?

Which metal is typically attracted to a magnet?

Which part of the motor allows the coil to rotate freely while still being connected to the power source?

In a simple D.C. motor, what provides the force to turn the coil?

In the diagram logic below, if the coil is currently horizontal, which component ensures it continues to rotate in one direction?

What provides the external magnetic field in a large industrial DC motor?

An electron moves horizontally through a magnetic field that is pointing vertically upwards. According to the Left-Hand Rule (remembering current is opposite to electron flow), what is the direction of the force on the electron?

Which rule is used to determine the direction of the magnetic field around a straight current-carrying wire?

An electromagnet is used in a scrap yard to lift heavy iron objects. Why is an electromagnet preferred over a permanent magnet for this task?

A student connects a galvanometer to a coil and moves a magnet in and out of the coil. Which of the following would NOT result in a larger deflection of the galvanometer needle?

The diagram shows the paths of three types of radiation—alpha ($\alpha$), beta ($\beta$), and gamma ($\gamma$)—as they pass through an electric field between two charged plates. Which path represents the $\beta$ particles?

When using a Geiger-Müller tube, what is the 'count rate'?

What does it mean if a nucleus is 'unstable'?

What property of an atom determines which element it belongs to?

Why are radioactive isotopes with very long half-lives particularly difficult to dispose of?

The activity of a sample falls from $480\text{ Bq}$ to $60\text{ Bq}$ in 120 minutes. What is the half-life?

Which of the following statements about radioactive decay is correct?

Which of the following is the primary reason why alpha-emitting isotopes are extremely dangerous if ingested, but relatively harmless if kept in a sealed container at a distance?

A sample has an initial activity of $R_0$. After two half-lives, the activity is $R_1$. After four half-lives, the activity is $R_2$. What is the ratio $R_1/R_2$?

A radioactive source is tested with different absorbers. The results are: Paper (No change), $2\text{ mm}$ Aluminum (Significant drop), $5\text{ cm}$ Lead (Small drop remaining). What radiation types are present?

Which planet is famous for its 'Great Red Spot', a giant storm?

The curvature of space-time around a massive object is what we perceive as:

Which of the following is true about stars in the 'Main Sequence'?

What unit is most commonly used to measure the distance between Earth and the Sun?

The diagram illustrates the temperature conditions in the early solar nebula during the formation of the Solar System. Based on the process of accretion, why are the inner planets primarily rocky while the outer planets are composed mostly of gases and ice?

The diagram shows the early stages of stellar evolution. Which stage is represented by the label 'X', where a cloud of interstellar gas and dust has contracted under gravity and increased in temperature, but nuclear fusion has not yet commenced?

Which of the following is a characteristic of all planets in our Solar System?

Why is the iron core of a massive star the 'beginning of the end'?

The Hubble constant is roughly $70\text{ km/s/Mpc}$. What does this value imply about the expansion of the universe?

Which of the following elements is NOT typically formed by nucleosynthesis inside a stable star during its lifetime, but rather during a supernova?

What is $250 ms$ in seconds?

Which of the following is used to measure very small time intervals in a lab experiment?

What is the mass of $1 liter$ of pure water at room temperature?

How many micrometers ($\mu m$) are in $1 mm$?

Convert $0.025\ amperes$ to milliamperes ($mA$).

Which quantity is represented by the gradient of a displacement-time graph?

Calculate the volume of a cylinder with a radius of $3.0\ cm$ and a height of $10.0\ cm$. (Use $V = \pi r^2 h$)

Which derived unit is equivalent to $kg \cdot m^2 \cdot s^{-2}$?

A measuring cylinder has a scale where the smallest division is $1\text{ cm}^3$. A student records the volume of a liquid as $24.0\text{ cm}^3$. Is this recording appropriate?

A force of $5\text{ N}$ acts towards the East and a force of $12\text{ N}$ acts towards the North. What is the magnitude of the force required to bring the system into equilibrium?

1. The Solar System: practice question 1 for Physics?

1. The Solar System: practice question 2 for Physics?

1. The Solar System: practice question 3 for Physics?

1. The Solar System: practice question 4 for Physics?

1. The Solar System: practice question 5 for Physics?

1. The Solar System: practice question 6 for Physics?

1. The Solar System: practice question 7 for Physics?

1. The Solar System: practice question 8 for Physics?

1. The Solar System: practice question 9 for Physics?

1. The Solar System: practice question 10 for Physics?

1. Stars and the Universe: practice question 1 for Physics?

1. Stars and the Universe: practice question 2 for Physics?

1. Stars and the Universe: practice question 3 for Physics?

1. Stars and the Universe: practice question 4 for Physics?

1. Stars and the Universe: practice question 5 for Physics?

1. Stars and the Universe: practice question 6 for Physics?

1. Stars and the Universe: practice question 7 for Physics?

1. Stars and the Universe: practice question 8 for Physics?

1. Stars and the Universe: practice question 9 for Physics?

1. Stars and the Universe: practice question 10 for Physics?