Air has pressure because

a. the stratosphere is thick

b. air has mass

c. wind moves the air

d. temperature warms the air

A 19 cm long, 10 mm diameter string was found to stretch 3.5 mm under a force of 16 N. The string breaks at a force of 42 N.

If an injury is caused by impact from an object alone, is this considered a caught-in or - between incident? Select the best option No, this is a struck-by incident Yes No, this type of incident is undefined

A 50 gram yo-yo is released and travels vertically downward, rolling without slipping. Knowing that the yo-yo's moment of inertia is 9 x 10-5 kg m2 and the radius of its center spindle is 0.

Scientists take scientific measurements carefully in order to ensure that reliability and validity. What is the difference between accuracy and precision in scientific measurements?

How are metal bridges built to cope with changes of temperature?

An object whose mass is 120 kg is located 20 m above a datum level in a location where standard gravitational acceleration exists. Determine the total potential energy, in kJ, of this object.

Is there an object that can lift a 45-N object

How does a quasar differ from a galaxy?

How many electrons does an atom of zinc contain?

During fabrication processes, polymeric materials are generally subjected to which of the following conditions? The ambient temperature. Elevated temperatures. The ambient pressure. Elevated pressures.