Correctly describe the position of the intake and exhaust valves during most of the power stage in a four cycle gas engine

Two objects, X and Y, move toward one another and eventually collide. Object X has a mass of 2M and is moving at a speed of 2v0 to the right before the collision.

What force must be applied to push a carton weighing 245 N up a 15.0° incline, if the coefficient of kinetic friction is 0.340? Assume the force is applied parallel to the incline and the velocity is constant.

When you hit a nail into a board using a hammer the head of the nail gets warm. In terms of kinetic and thermal energy describe why you think this happens?

What must the total force on an object be for it to travel with a constant velocity? A) 0 N B) 10 N C) 20 N D) 100 N

What is the last step to take in order to keep food safe? clean chill freeze store

A Find the magnitude of the angular momentum of the second hand on a clock about an axis through the center of the clock face. The clock hand has a length of 15.0 cm and a mass of 6.00 g.

A geologist finds ripples preserved in ancient sedimentary rock that look just like ripples made by water in mud. He concludes that there was once water in that location that created the ripples. Why is this conclusion reasonable?

In science what is the requirement of doing work?

What Fitness Gram test is assessing your cardiovascular endurance?

A graph titled Position versus time for with horizontal axis time (seconds) and vertical axis position (meters). A straight blue line runs with an upward slope from 0 seconds 3 meters to 4 seconds 15 meters. The starting position of this object is m.