Who first conceived the idea of daylight saving time and when

Explain rate of decay of a material?

A car is traveling at a speed of 39.2m/s on an interstate highway where the speed limit is 65.0mi/h. Is the driver exceeding the speed limit? YesNo Justify your answer.

What is the frequency of a water wave that travels 20 m/s with a wavelength of 200 meters?

What type of energy transfer is made possible by a nine-volt battery in a calculator? a. light to mechanical b. electrical to chemical c. chemical to electrical d. electrical to electromagnetic

A spring requires 10 N of force to hold it 1 m past its natural length. How much work is required to stretch it from its natural length to 1 m past its natural length?

Noah Formula is in an airplane which is flying at constant speed in a circular course of radius 6500 m, circling O'Hare's airplane prior to landing. Noah observed that the plane completes each round trip in 345 seconds (5 minutes & 45 seconds).

Two pieces of metal with exactly the same mass are placed on a surface in bright sunlight. The temperature of the 1st block increases by 3°C while the temperature of the 2nd increases by 8°C. If the specific heat of the 2nd block is 0.

The correctly balanced equation for H202 - H2O + O, is A) H202 - 2H2O + O2 B) H302 - H20+20, C) 2H, 02 - - 4H20 + 0, D) 2H, 02 - 2H30 + 0,

What happens to the wavelength of a wave if you increase the frequency?

In a transverse wave, the particle motion is what to wave motion? A. perpendicular B. parallel