Physics

Which of these can a force NOT change about an object?

What is the force of gravity on a $1\text{ kg}$ mass on Earth?

How do you calculate the distance traveled if you know the speed and the time?

Which of these represents a 'pulling' force?

Which force causes a balloon to stick to a wall after being rubbed on a sweater?

A hiker walks $5 km$ North and then $5 km$ South. What is their total distance traveled?

If an object is moving at $10 m/s$ and then speeds up to $20 m/s$ over $5$ seconds, what has happened to the object?

A car traveling at $30\text{ m/s}$ brakes and comes to a stop in $5\text{ seconds}$. What is the deceleration of the car?

A ball is kicked and rolls along the grass, eventually coming to a stop. Which energy transfer primarily causes it to stop?

A force of $10\text{ N}$ acts on a surface area of $0.5\text{ m}^2$. If the force is doubled and the area is halved, what is the new pressure?

If an object travels $0\ meters$ in $10\ seconds$, its speed is:

A cheetah can run at $30\ m/s$. How long would it take to run $90\ meters$?

Using the scenario in the previous question (total $120\ km$ in $2\ hours$), what is the average speed?

A car travels $50\ km$ in the first hour and $70\ km$ in the second hour. What is the total distance?

Which of the following is required to calculate velocity but not speed?

If a car travels at $90\ km/h$, how many meters does it travel in $1\ second$?

A ball is thrown upwards and then caught at the same height. If the total distance traveled is $6\ m$, what is the displacement?

How many hours does it take for a satellite to orbit the Earth once if it travels at $28,000\ km/h$ and the orbit circumference is $42,000\ km$?

A car travels $10\ m$ in the 1st second, $20\ m$ in the 2nd second, and $30\ m$ in the 3rd second. Is the speed constant?

A person walks $100\ m$ North, then $100\ m$ South, then $100\ m$ North again in $300\ seconds$. What is the average velocity?

In a steam engine, what is the main energy transfer used to move the pistons?

What happens to the total amount of energy in a closed system after a transfer?

Which of these objects has the most kinetic energy?

Which energy transfer occurs in a microphone?

In a thermal power station, energy is converted through several stages to produce electricity. Using the energy flow diagram provided, identify the primary energy transformation that occurs within the Boiler.

If a system is $100\%$ efficient, what does this mean for the energy transfers?

Which energy store is related to the position of an object in a gravitational field?

A $100\%$-efficient machine is theoretically possible only if which condition is met?

A catapult uses a rubber band to fire a stone. What is the energy transfer sequence?

Which of the following is the correct unit for Power?

Which of the following is true about sound?

If an object vibrates 1,000 times in 2 seconds, what is its frequency in $Hz$?

What is the main medium that sound travels through when we listen to a radio in a room?

A student blows into four different pipes of different lengths. Which pipe produces the highest pitch?

Which part of the ear is the first to vibrate when sound waves enter the ear canal?

If you decrease the amplitude of a sound wave but keep the frequency the same, how does the sound change?

What do we call sounds with frequencies below the range of human hearing?

If you double both the frequency and the wavelength of a sound wave, what happens to the calculated speed of that sound?

Which of the following would produce a sound that is most likely to be in the ultrasonic range?

A sound wave has a period of $2\ milliseconds$. A second sound wave has a period of $4\ milliseconds$. How does the pitch of the first sound compare to the second?

A ray of light that strikes a surface is called the:

Light travels much ______ than sound.

Which statement is correct about the image formed by a plane mirror?

The point where the incident ray strikes the mirror is called the:

A ray of light (Ray 1) is directed towards a transparent glass block. As it hits the surface, the light divides into two paths, Ray 2 and Ray 3. If Ray 2 bounces back into the air and Ray 3 enters the glass, which of the following correctly identifies the processes occurring at Ray 2 and Ray 3?

What happens to light when it passes from a dense medium like diamond into a less dense medium like air?

If a reflected ray is at $90^\circ$ to the incident ray, what is the angle of incidence?

Two plane mirrors are joined together at an angle of $120^\circ$. A ray of light is incident on the first mirror at an angle of $40^\circ$ to the normal. This ray reflects off the first mirror and then strikes the second mirror. What is the angle of reflection at the second mirror?

If a light ray passes through a boundary where the refractive index changes from $n=1.5$ to $n=1.2$, what happens to the light ray?

A ray of light travels from air into glass. The angle of incidence is $60^\circ$ and the angle of refraction is $35^\circ$. What is the refractive index of the glass?

In the following circuit diagram, which electrical component is represented by the symbol located at the top of the loop?

Identify the component shown in this circuit that provides the electrical energy.

In the following series circuit, what happens to the second lamp if the first lamp breaks?

Which component is represented by the symbol shown in the circuit diagram?

In the parallel circuit shown, what happens to Lamp 2 if Lamp 1 is disconnected?

What is the difference between a cell and a battery in circuit diagrams?

If you add another battery in series to the circuit shown, what will happen to the reading on the ammeter?

A technician is troubleshooting a complex control panel. They notice a specific symbol consisting of two parallel lines of different lengths and need to determine how the current behaves in the loop. Based on the diagram provided, which statement accurately identifies the power source symbol and the direction of conventional current?

A student sets up a circuit to compare the brightness of two identical lamps in different configurations. In the diagram shown, if one lamp is unscrewed and removed from its holder, what will happen to the remaining lamp, and how is this circuit classified based on its schematic symbols?

In a complex toy car, there are two headlights. The designer wants to ensure that even if one bulb blows, the other one continues to function so the child can still see. Which circuit diagram correctly represents this design requirement, and what is the technical name for this arrangement?

Which material would be the best choice for shielding a sensitive device from a magnetic field?

If the North pole of a magnet is free to rotate, in which geographic direction will it point?

Which of these devices does NOT typically contain a magnet or electromagnet?

When using the 'stroking' method to magnetize a needle, what is important?

If a wire is placed vertically and a current flows upwards through it, what is the shape of the magnetic field around it?

A student places a piece of paper over a bar magnet and sprinkles iron filings on top. Where will the most filings cluster?

Where is the Earth's Magnetic North Pole located relative to its Geographic North Pole?

What happens to the magnetic domains in a permanent magnet if it is repeatedly hammered?

Which of the following determines the direction of the magnetic field around a straight wire?

If the current in a solenoid is increased by a factor of 4, and the number of turns is halved, what is the net effect on the magnetic field strength?