A train travels 79 kilometers in 4 hours and then 65 kilometers in 3 hours what is it average speed

What causes current to alternate in ac circuit

What is true about radio waves

Which of the following statements about arranged marriages is not true? A. They generally occur in third-world countries. B. They generally occur in collectivist societies. C. They generally occur in traditional societies. D.

The scientist is investigating the cause of an unusual color in the lake water of a specific location

A constant force of 3.3 N to the right acts on a 16.6 kg mass for 0.54 s. (a) Find the final velocity of the mass if it is initially at rest.

Do you think an observer on another planet in the solar system might see eclipses

A. A vector is any element of a vector space. Is this statement true or false? A. True by the definition of a vector space B. False; not all vectors are elements of a vector space. C. False; a vector space is any element of a vector.

19 Which gas is the most abundant greenhouse gas? A. ozone B. chlorofluorocarbon C. carbon dioxide OD. methane E. water vapor Reset Next

The plates of a parallel-plate capacitor are maintained with a constant voltage by a battery as they are pushed together, without touching. How is the amount of charge on the plates affected during this process? a.

Which of the following creates a longitudinal wave? A. striking a gong B. turning on a flashlight C. shaking a rope up and down D. dropping a stone into a pond