1. the most suitable cutting process to use on ferrous metals such as straight carbon steel is

a. carbon arc cutting

b. oxyfuel cutting

C. powder cutting

d. plasma arc cutting

If a wave has a wavelength of 4m and a frequency of 2.5hz what is the velocity of the wave

A lamp converts electrical energy to light energy in addition to light energy much of this electrical energy is also converted to what?

How does friction apply a force to a moving object?

Which of these most directly impacts a person's physical health?

Which part of the year first gather sound and is often pierced?

What does the speed of sound depend on? A. Medium that the sound travels through B. Acoustics C. Frequency of the sound D. Loudness of the sound

Which of these is not a source of the shock waves that lead to protostars?

Which kind of information is known about a person if that person's DNA is in a database? A. how old the person is B. where the person was probably born C. some diseases the person might have D. whether the person is likely to commit a crime

A science teacher ran a marathon. After the race she showed her students the silver blanket she was given to keep her warm. A group of students investigated how the colour of the blanket affected how much infrared radiation is absorbed

Students asked to measure the temperature of a reaction beaker recorded the following temperatures. 103.7°C, 108.4°C, 105.8°C, 104.6°C The actual temperature is 105.1°C. Which measurement is the most precise