Why are gases poor conductors of heat? A. Particles in a gas do not collide. B. Particles in a gas collide more often. C. Particles in a gas collide less often.

A 286-kg motorcycle is accelerating up along a ramp that is inclined 31.6° above the horizontal. The propulsion force pushing the motorcycle up the ramp is 3168 N, and air resistance produces a force of 230 N that opposes the motion.

If you use a stick to push an object, the muscular force acting on it is a non contact force. True or false? Explain

The rear window in a car is approximately a rectangle, 2.0 m wide and 0.65 m high. The inside rearview mirror is 0.50 m from the driver's eyes, and 1.80 m from the rear window.

Which of the following is necessary for plants to exhibit phototropism ) A) geotropism B) thigmotropism C) phototropism D) photoperiodism

You have been assigned a drawer filled with the glassware that you will be using while performing experiments. Check each action that should be performed prior to beginning your experiment. (Check all that apply) a.

Since you've determined that the power supply is a 700W dual rail, what does that make the maximum output power?

A 2 m length of an aluminum pipe of 240 mm outer diameter and 10 mm wall thickness is used as a short column to carry a 640? centric axial load. Knowing that? = 73? P? and? = 0.

A python can detect thermal radiation from objects that differ in temperature from their environment as long as the received intensity of thermal radiation is greater than 0.60 W/m2. Your body emits a good deal of thermal radiation.

A planet has a mass of about 6.4 x 1023 kg, and its moon has a mass of about 9.6 x 1015 kg. if the magnitude of the gravitational force between the two bodies is 4.6 x 1015 n, how far apart are the planet and its moon? a. 9.4 x 106 c. 4.6 x 109 b. 2.

Is burning a nonrenewable natural gas a chemical change