which of the following accurately describes how scientist uses models? A) To make direct observations of a natural object, process, or system B) To make science seem more complex and inaccessible C) To make measurements of an object, process, or system as it is in nature D) To represent objects, process, and systems that are to large, to small, or to complex to study directly.

Ameter stick is pivoted at the 0.50-m line. a 3.0-kg object is hung from the 0.15-m line. where should a 5.0-kg object be hung to achieve equilibrium (the meter stick oriented horizontal and motionless)?

Give your knowledge of these things in your paper, you will compare and contrast analog and digital signals to determine which is more reliable for encoding and transmitting information. you’ll compare these features: signal shape numerical values for signal measurements amount of data that can be transmitted energy requirements privacy and security (ability of the signal to be encoded in a secret code) clarity of signal in the space provided, write down what you already know about any of these features. if you’re not sure, write down questions you might have about the features.

The radius of an atom is closest in size to a