You walk 20 m north, then 5 meters south. What is your displacement?

Love, which can't be observed or measured directly, is an example of a psychological construct. a. True b. False

What is the pH range of an acid? 0 - 6 6 - 8 8 - 14 0 - 14

Light travels fastest when moving through

True or False: When a wire with a current is placed in a magnetic field, electrical energy is transformed into mechanical energy

A man pulls a sled at a constant velocity across a horizontal snow surface. if a force of 80 n is being applied to the sled rope at an angle of 53° to the ground, what is the force of friction between sled and snow?

A change from one form of energy into another is called a. gravitational potential energy. b. work. c. conservation of energy. d. an energy transformation

4. An airplane must achieve a velocity of 71 m/s for takeoff. If the runway is 1000 m long, what must the acceleration be?

As the average kinetic energy of the particles in a gas increases, which of the following occurs?

Power=170 watts time=20 seconds

What is the charge of alpha, beta and gamma rays?