A man is walking while riding a train. He says he is moving at 2 mph. A woman standing on a platform at a train station says the man on the train is moving at 72 mph. Which person is correct?

What is the wavelength of an earthquake wave if it has a speed of 3 km/s and a frequency of 6 Hz?

Finding the spring constant as shown, spring 3, which has an unknown spring constant k3, replaces spring 2. the mass of the weight and pulley are unchanged: m=5.8 kg and mp=1.7 kg.

How can you differentiate between elements and compounds

How much time does it take 9,560 joules of work with 860 watts of power

Is light a type of electromagnetic radiation? I know it has radiation but ... ?

Acceleration is a vector quantity. O O A. True B. False

What will happen to the brightness of a string of bulbs hooked up in series when you increase the number of bulbs in the string? A. Each light in the string will get brighter. B. Each light in the string will get dimmer. C.

What are the two factors that influence the composition of beach material

Which of the following indicates that a ChemicL change has taken place? (A) a change from liquid to a gas (B) an increase in the volume of a substance (C) a change in the color of a substance (D) a change from a solid to a liquid A precipitate is a

Which of these circuit schematics has an ammeter?