Element x has five valence neutrons, element y has one valence electron and element z has one valence electron. which two of these elements are most likely to have similar properties

Which type of electromagnetic radiation can not be focused

What does it mean to say mass and weight are preportional to each other?

Strictly speaking, as more and more skyscrapers are built on the surface of the Earth, does the day tend to become longer or shorter? And strictly speaking, does the falling of autumn leaves tend to lengthen or shorten the 24-hour day?

Platinum has a density of 21.4 g/cm3. if thieves were to steal platinum from a bank using a small truck with a maximum payload of 900 lb, how many 1 l bars of the metal could they take?

A ball is pushed from a stop and rolls 6 m in 2 s. Student A says the average speed of the ball is 3 m/s. Student B says the average speed of the ball is 1.5 m/s2. Which student is correct? Explain your answer.

An automobile having a mass of 2000 kg deflects its suspension springs 0.02 m under static conditions. Determine the nafural frequency of the automobile in the vertical direction by assuming damping to be negligible.

Samantha is checking the weather for her upcoming trip to Mexico City. The weather forecast predicts a high-pressure system for the four days of her trip. What kinds of conditions can she expect?

Compare the life cycles of flower less seed plant and flowering seed plants

A clock moves past you at a speed of 0.9 c. How much time passes for you for each second that elapses on the moving clock? 0.436 s 1.15 s 2.29 s infinity

A 0.18-kg ball on a stick is whirled on a vertical circle at a constant speed. When the ball is at the three o'clock position, the stick's tension is 19 N.