A car travels 30.0 km to the south and then turns around and travels 20.0 km to the north in 1.5 hours time. What is the car's total displacement? What is the car's average velocity?

An ideal gas undergoes isothermal compression from an initial volume of 4.81 m^3 to a final volume of 2.78 m^3. There is 7.25 mol of the gas, and its temperature is 23.1°C.

What does a metallurgist study

How do many coal-powered factories change the environment? by causing increased erosion by releasing pesticides into the air by releasing oil into the ocean by causing acid rain

Your glass falls to the ground name the forces acting on the glass Choose all that apply Gravity, Spring, Tension, Normal, Friction, Air resistance

What is Aeronautical Science?

if the accepted thickness of aluminum foil is 1.5x10^5 is your answer percise, accurate or both. explain your answer

An object is thrown upwards with the speed of 40.0 km/hr in 5 second, calculate the distance in millimeters (mm).

What controls the net direction of molecules?

Dispersion is the separation of white light into separate colors by A. differences in wavelength B. differences in wave amplitude C. the blocking of light D. constructive interference

Why would a person choose to tie a helium-filled balloon to a child's wrist instead of simply having the child hold on to it? A. Helium is less dense than air, so it will float above air if the child lets go of the balloon. B.