Why would machine-operated stopwatches be used at sports events instead of hand-operated stopwatches?

The maps above show the arrangements of Earth's continents and oceans 65 million years ago and at present. Which of the following best explains the change seen in the Atlantic Ocean over the last 65 million years? A.

Why do people eat vegetables? Not just to stay healthy! But why else do we eat and need vegetables?

A cylindrical resistor of length l is made from a metal of mass m. It has a resistance R. Two resistors, each of length 2l and mass m/2 , are then created from the same volume of the metal.

Modern oil tankers weigh over a half-million tons and have lengths of up to a quarter of a mile. Such massive ships require a distance of 5.0 km (about 3.0 mi) and a time of 22 min to come to a stop from a top speed of 26 km/h.

How do white dwarfs compare with supergiants, in terms of temperature and luminosity? white dwarfs are cooler and have higher luminosity than supergiants. white dwarfs are cooler and have lower luminosity than supergiants.

What is the difference between speed and velocity and give an example.

Water flows over a section of niagara falls at the rate of 1.2x10^6 and falls 50.0 m. how much power is generated by the falling water

What is the darkest side of the moon called?

Brian is a healthy young man. He has been training with his teammates for a 50-yard dash for months. However, even with practice, he cannot run fast enough to qualify. What is the most likely reason that Brian can't qualify?

1. Are BEVs or hydrogen fuel cell vehicles a more promising transportation technology for the future? 2. Should car companies be required to produce electric cars?