A boat at anchor is rocked by waves whose crests are 28 m apart and whose speed is 7 m/s. How often do these waves reach the boat? State your answer in terms of frequency (Hz) and period T (seconds).

Which statement is true about additional force being applied to an object in motion? A. if an object is in motion and more force is applied in the direction of its motion, the object will remain at a constant speed. B.

A patient with lung disease usually has difficulty breathing

What does the band of stability for atomic nuclei refer to

Where does the word 'robot' come from?

Which is NOT unique to each element? Select one: a. neutron number b. atomic number c. proton number d. chemical symbol

What does Kepler's second law state? A. Planets travel in ellipses. B. Planets sweep equal areas in equal times. C. A planet's apparent backward movement is termed retrograde motion. D.

Why do charges build up in a cloud

How does the wave model of electrons orbiting the nucleus account for discrete energy values?

An ecosystem is all the populations of organisms that live together and A. the microorganisms that depend on them. B. the organisms that generate energy from sunlight. C. the physical factors with which they interact. D.

Which statement about magnetic poles is accurate? A) Same magnetic poles attract, while different magnetic poles repel. B) Same magnetic poles attract, while different magnetic poles attract.