Which of the following is group 1? a. alkali metals b. alkaline earth metals c. halogens d. transition metals

Name three ways that scientists can ensure their results are reliable

What happens when the diaphragm is lowered?

Suppose gene A on the left chromosome is damaged and no longer functions. what form of the trait would show? Why?

A 30 kg child sitting 5.0 m from the center of a merry-go-round has a constant speed of 5.0 m/s. while she remains seated in the same spot and travels in a circle, the work the seat performs on her in one complete rotation is

A student adds 75.0 g of hot water at 80.0 0C into a calorimeter containing 100.0 g cold water at 20.0 0C. The final temperature is 42.5 0C. The heat capacity of water is 4.186 J/gK. What is the heat capacity of the calorimeter?

An empty capacitor is connected to a 12.0 V battery and charged up. The capacitor is then disconnected from the battery, and a slab of dielectric material (dielectric constant "k" = 2.8) is inserted between the plates.

how long can you afford to stop for lunch if you can drive a steady 90 km/h on the highway and must take a 225 km trip in 210 min?

Which layer of the Sun's atmosphere is farthest from the surface of the Sun? A) troposphere B) corona C) chromosphere D) photosphere

Which of the following is a supersonic speed? Mach 0.005 Mach 0.05 Mach 0.5 Mach 5

How do you solve this equation ___ Al + ___ Na1 O1 H1 - ___Na3 Al1 O3 + __ H2