For saving lives, what is the most important safely feature on a car

a. air bag

b. safely belt

c. anti-lock brakes

How many positions coordinates are required to identify the position of a system undergoing one dimensional motion and what symbols should you use to identify a systems position in one dimensional motion

A 70-kg person in a moving car stops during a car collision in a distance of 0.60m. the stopping force that the air bag exerts on the person is 8000N.

A potential difference of 3.27 nV is set up across a 2.16 cm length of copper wire that has a radius of 2.33 mm. How much charge drifts through a cross section in 3.23 ms? Assume that the resistivity of copper is 1.69 * 10-8 Ω·m.

When the heart is examined, both the diaphragm and bell stethoscope pieces are used for auscultation. In general, the diaphragm is best for hearing high-pitched sounds, and the bell is most useful for hearing low-pitched sounds. A) True B) False

The structure of the atomOn the basis of Rutherford's experimental observations, which of the following statements predicts the structure of the atom?1.

The spinning of earth on its axis causes the apparent rising and setting of the

20 m/s can be an answer for velocity true or false

Two copper wires with different diameters are joined end to end. If a current flows in the wire combination, what happens to electrons when they move from the larger-diameter wire into the smaller-diameter wire?

A baseball player is warming up and tosses a ball straight up into the air. The ball travels up until it reaches some maximum height, and then falls back down to the player/'s hand.

Volume can be measured in liters or cubic meters. a. T b. F