Which of the following supplies the heat for the hot reservoir in a car's engine?

mixing gasoline with air

cooling the exhaust gases

igniting the gas-air mixture

venting the exhaust gases

Which is the largest galaxy in our Local Group?

Under favorable circumstances, including reaction time, a motor vehicle with good brakes going 50 mph can be stopped within?

Iva is studying whether students gain weight during their first year of college. she collects weights from all the incoming freshmen in the fall, then collects weights from them again at the end of the spring term.

You pull on a wagon resting on the sidewalk. What will happen next. A. The wagon does not move because the wagon applies more force to you than you apply to the wagon. B. The wagon moves because you apply more friction to the ground. C.

Which has the greater momentum when moving?1. A) a container ship2. B) a bullet3. C) either of these depending on speed

After creating a question and forming a hypothesis, what is the next step in the scientific method

Roger sees water balloons fall past his window. He notices that each balloon strikes the sidewalk 0.51 s after passing his window. Roger's room is on the second floor, 10 m above the sidewalk.

Which statements accurately describe the Doppler effect?

Describe how mass and distance affect gravitational force.

a bike can climb the inclined road at uniform speed of 72 km/hr by applying force 500N what will be the power applied by the bike?