Dr. west mixes zinc (zn) and hydrochloric acid (hcl) together in his laboratory. the two chemicals react to form hydrogen gas (h2) and zinc chloride (zncl2).

If you had only one match, and entered a dark room containing an oil lamp, some newspaper, and some kindling wood, which would you light first?

A ball is kicked with an initial velocity of 17 m/s in the horizontal direction and 13 m/s in the vertical direction. (Assume the ball is kicked from the ground.) (a) At what speed (in m/s) does the ball hit the ground

If a rock were dropped from a building it would hit the ground with a certain kinetic energy and velocity. If it fell from a roof 25 times as tall, how would its speed of impact compare? You must show work to receive credit.

Self Esteem is a way of thinking, feeling and acting that implies you- a) Accept others. b) Believe in yourself. c) Believe others. d) All of the above.

Which of the fluids below would produce the highest pressure at the bottom of a tank for the same fluid depth? a. mercury b. air c. water d. helium?

If the abosolute of a gas is 600 k, the temperature in degrees Celsius is

How does an electromagnetic wave propagate itself? a. A changing magnetic field induces an electric field perpendicular to the magnetic field. b. A changing electric field induces a magnetic field perpendicular to the electric field. c.

Which of the following is an example of convection? A. hot air rising and cooler air falling B. a hot object transferring heat to a cooler one C. a hot oven warming the air around it D. the rays of the Sun warming the earth

A 50,000 kg locomotive is traveling at 10 m/s when its engine and brakes both fail. How far will the locomotive roll before it comes to a stop? Assume the track is level.

A rectangular loop of wire with sides 0.262 and 0.401 m lies in a plane perpendicular to a constant magnetic field (see part a of the drawing). The magnetic field has a magnitude of 0.