Two boxes of hockey equipment that are initially at rest in the middle of the ice surface of a skating rink. To push it to the side of the rink, you exert a constant horizontal force on the top box. The following questions explore what happens depending on how hard you push. The box surfaces are rough. The coefficient of static friction between them is μᵍ. The coefficient of kinetic friction is μₛ
If the magnitude of the force you exert on the top box is small enough, the boxes will move together across the ice without slipping on each other. What would the magnitude and direction of the friction force exerted on the top box by the bottom box be in that situation?
Answers: 3
Physics, 22.06.2019 11:00
1. jay fills a wagon with sand (about 20 kg) and pulls it with a rope 30 m along the beach. he holds the rope 25° above the horizontal. the rope exerts a 20-n tension force on the wagon. how much work does the rope do on the wagon?
Answers: 1
Physics, 22.06.2019 11:00
I'm thinking it's 2 you are asked to explain the earth's magnetic field. which is the best reply? 1. the earth's magnetic south is similar to the north pole of a magnet. 2. the earth's core has a strong magnetic charge similar to the south pole of a magnet. 3. the earth's geomagnetic south is similar to the south pole of a magnet. 4. the earth's magnetic charge is not centered at either pole; it varies based on location.
Answers: 1
Physics, 22.06.2019 12:40
Find the equation for the plane through upper p 0 left parenthesis negative 4 comma negative 8 comma negative 5 right parenthesis perpendicular to the following line. xequalsnegative 4 minus t, yequalsnegative 8 plus 2 t, zequals3 t, minusinfinityless thantless thaninfinity
Answers: 2
Two boxes of hockey equipment that are initially at rest in the middle of the ice surface of a skati...
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