A zoom Question 10
Which of the following is true of lunar eclipses?
Alunar eclipse happens when the Sun is blocked by the Moon
Alunar eclipse occurs when Earth is between the Sun and the Moon
Alunar eclipse happens when the Sun's shadow is blocking the Moon
D
Alunar eclipse happens every lunar cycle when the Moon is full,

True or false when elements combine to form a mixture, the resulting chemical properties may be very different from those of the elements that make it.

An insulated 40 ft^3 rigid tank contains air at 50 psia and 120°f. a valve connected to the tank is now opened, and air is allowed to escape until the pressure inside drops to 25 psia. the air temperature during this process is kept constant by an electric resistance heater placed in the tank. determine the electrical work done during this process.

Two students, each riding bicycles, start from the same apartment building and ride to the same building on campus, but each takes a different route. the first student rides 1100 m due east and then turns due north and travels another 1430 m before arriving at the destination. the second student heads due north for 1930 m and then turns and heads directly toward the destination.at the turning point, how far is the second student from the destination?