Which statement accurately classifies helium?

A. it is an atom

B. It is a mixture

C. It is a molecule

D. It is a compound

Two stars, x and y, have the same temperature. star x is ten times more luminous than star y. which star has the larger radius

Why has the atomic model changed over the years from one of tiny, solid balls, to the current model of electrons orbiting the nucleus? Question 4 options:

What does pascals principle state

What kind of physics conduct theory's using mathematical problems?

An object which has a mass of 70 kg is sitting on a cliff 10 m high. Calculate the object's Potential energy. Given g = 10m/s2 Question 16 options: a) 7,000 Joules b) 3,500 Joules c) 70 Joules d) 35 Joules e) 700 Joules

What is the name of the effect that causes water to travel at an angle to trade winds?

Two books with different masses fall off the same bookshelf. As they fall, which has more kinetic energy and why

Which of the following is an example of convection? a a hot object transferring heat to a cooler one b the rays of the Sun warming the earth c a hot oven warming the air around it d hot air rising and cooler air falling

Bob drove from home to work at 60 mph. after work the traffic was? heavier, and he drove home at 50 mph. his driving time to and from work was 1 hour and 28 minutes. how far does he live from his? job?

How to measure voltage across an ungrounded component with a two channel oscilloscope?