When energy is transformed, the amount of usable energy?

Which of the following is an example of the strong nuclear force acting in an atom? A. A neutron attracting a proton B. A proton attracting an electron C. An electron attracting another electron D. A neutron attracting an electron

The density for potassium is 0.856 g/cm3. What would be the mass of a 40 cm3 piece of potassium? A. 68.48g B. 46.73g C. 34.24g D. 34g

A submarine periscope uses two totally reflecting 45-45-90 prisms with total internal reflection on the sides adjacent to the 45 degree angles.

Match the following items. 1. empathy a personal view of a situation; ability to understand the senses 2. perception mental health professional who attended medical school 3. cognition concerned with the treatment of disease 4.

Technician A says coils are usually wrapped around an iron core. Technician B says coils block direct current flow. Who is right?

Select all of the answers that apply. Which statements are true regarding the scientific evidence supporting the big bang theory? Researchers found cosmic microwave background radiation, which is a heat imprint left over from the big bang.

How are magnetic poles and electrical charges similar? A. Their same forces repel each other, and their opposite forces attract each other. B. Their same forces attract each other, and their opposite forces repel each other. C.

As part of his meal, a workman has a cup containing a hot drink. In order to keep the drink hot whilst he eats the rest of his meal, he covers the cup, as shown in the figure. Which sources of energy loss does this action reduce? Tick two boxes.

When energy is transformed, the amount of usable energy?

If an object weighs 39.2 n on earth, what is its mass