How long would it take for a sound impulse to travel through a copper rod 25 kilometers long? the speed of copper is 3,500

0.071 sec

0.14 sec

7.1 sec

140 sec

if a spring stores 5j of energy when it is compressed by0.5m, what is the spring constant of the spring?

Light with a wavelength of about 490 nm is made to pass through a diffraction grating. The angle formed between the path of the incident light and the diffracted light is 9.2° and forms a first-order bright band.

The sun looks like a cloud of hot steam is exploding from its surface. What is the most likely explanation. A. Solar maria B. Sunspots C. Coronal mass ejections D. Impact basins

Describe what an electromagnet Give 2 examples of when an electromagnet is used in everyday lives

If different colored lights were shined through a prism would it still make a rainbow?

Which organization functions to privide clinics and surgeries i developing nations

What role do convection currents play in oceans and the atmosphere?

What causes density currents to form in the mediterranean sea? a. condensation b. evaporation c. transpiration d. upwelling

How long does it take a car to travel 450 km at 75 km/hr

A free-falling golf ball strikes the ground and exerts a force on it