Units and Measurements
What is the process used to express very large or very small numbers in a more convenient form in physics?
What is scientific notation?
What type of quantity has both magnitude and direction, like displacement or velocity?
What is a vector quantity?
What is the unit used to measure work in physics?
What is the joule (J)?
Define the term "friction" in physics.
What is the force that opposes motion between surfaces in contact?
Define "specific heat" in the context of thermodynamics.
What is the amount of heat required to raise the temperature of one gram of a substance by one degree Celsius?
How many significant digits are in the number 5.60
What is three significant digits?
Define the term "equilibrium" in the context of forces.
What is a state where the net force acting on an object is zero?
Define the concept of mechanical energy in physics.
What is the sum of kinetic and potential energy in a system?
Explain the difference between static and kinetic friction.
What is static friction resists motion while the object is at rest, while kinetic friction opposes motion of moving objects?
What is the formula to calculate heat energy?
What is heat energy = mass × specific heat capacity × temperature change?
Convert 500 meters to kilometers. Show your work.
What is 0.5 kilometers?
Calculate the net force acting on an object with forces of 15 N and 10 N acting in the same direction.
What is 25 N?
Calculate the work done when a force of 20 Newtons is applied to move an object a distance of 5 meters.
What is 100 joules?
Describe the concept of torque and provide its formula.
What is the measure of the rotational effect of a force and torque = force × lever arm?
Explain the relationship between temperature and kinetic energy in the context of the kinetic theory of matter.
What is higher temperature correlates with higher average kinetic energy of particles in a substance?
If a speed is given as 60 miles per hour, what is its equivalent value in meters per second?
What is approximately 26.8 meters per second?
Describe the difference between average speed and average velocity in terms of their calculation and significance.
What is average speed being the total distance traveled divided by total time, while average velocity involves both magnitude and direction?
If an object has a kinetic energy of 200 joules and a mass of 20 kilograms, what is its speed?
What is 10 meters per second?
A 20 N force is applied at the end of a wrench that is 0.3 meters long. What is the torque applied?
What is 6 Nm (Newton-meters)?
Calculate the heat required to raise the temperature of 500 grams of water from 20°C to 40°C given the specific heat capacity of water as 4.18 J/g°C.
What is 41,800 joules?
Given a distance of 8.2 × 10^6 meters, and a time of 4.6 × 10^3 seconds, what is the speed in m/s (meters per second)?
What is approximately 1.78 × 10^3 m/s?
A force of 50 N is applied to a 10 kg mass. What is the resulting acceleration of the object?
What is 5 m/s²?
A 50 kg person climbs a set of stairs, gaining 500 joules of potential energy. How high did they climb?
What is 10 meters?
A block initially at rest is acted upon by a 10 N force. If the coefficient of kinetic friction is 0.2, what is the acceleration of the block?
What is 4 m/s²?
A 100 g piece of metal is heated from 20°C to 100°C. If it absorbed 2500 J of heat, what is the specific heat capacity of the metal?
What is 2.5 J/g°C?