If an electrically neutral atom has 4 protons and 4 neutrons and it loses 2 electrons, what is its charge?

A) positive 2

B) negative 2

C) neutral

D) varies

Which type of nuclear waste is most dangerous to humans? A. Low-level B. transuranic C. High-level

A 2200 kg car doubles its speed from 50 km/hr to 100 km/hr. By how many times does the kinetic energy from the car's forward motion increase?

What caused the flying pig to move in a circle, the vertical component of the tension, the horizontal component of the tension, the weight, or a mysterious unknown thing called the centripetal force?

If the voltage across two oppositely charged parallel plates is kept constant, what happens to the relationship between the electric field and the distance between the two plates? A) The electric field is directly proportional to the distance.

Energy associated with object that can be stretched or compressed

Which of the following statements are correct? 1. Electrons and protons have identical masses but opposite charges. 2. Most of an atom's mass is concentrated in a small, positively charged, nucleus. 3.

What are some changes that can be caused by sound energy?

A cheetah can run at 30 m/s, but only for about 12s. How far will it run in that time

A car is traveling 80 km/h if the car's speed remains constant how far will it have traveled in 3 hours a. 3km b. 26.7km c. 80 km d. 240 km

True or False? Gases such as water vapor condense when they are * heated*.