Chemistry Organic Chemistry Level: Misc Level
What are thereaction conditions to go from 3- pentenal to 1- hydroxy -3- pentene? Show the complete reactin. (10 pts.)
Chemistry Organic Chemistry Level: Misc Level
Draw the structures of two carbonyl compounds and one amine that could react to produce N - ethl butanamide. (10 pts.)
Physics Work,Power & Energy Level: Misc Level
You are standing at the Express Lube watching as your car is serviced. The hoist is powered by a 3000 watt motor.
a.How long would it take to raise Gary s 3000 Ib truck 2.5 meters?
b.How long would it take with a 5,000 watt motor?
Physics Kinematics Level: Misc Level
Gary drops a water balloon out the classroom window 14 m above the ground. what is its speed when it hits the ground?
Physics Work,Power & Energy Level: Misc Level
The fastest that a human has run is about 12.2 m/sec If an Olympic pole vaulter could run this fast and convert all of his or her kinetic energy into gravitational potential energy, how high could he or she go?
Physics Work,Power & Energy Level: Misc Level
While in orbit about the earth, the space shuttle mass is 80.000 kg and its speed is 7,900 m/sec. What is its kinetic energy?
Physics Kinematics Level: Misc Level
A dragster funny car accelerates down the quarter-mile strip in 4.25 seconds.
a.what is the funny cars average velocity for the run (in m/sec)?
b.what is the funny car s average acceleration for the run in m/sec square and in g,s?
Physics Circular Motion Level: Misc Level
Gary recently rode his Harley (total mass of 500 kg) through the Tail of the Dragon at Deals Gap in the Great Smoky Mountains, In general the radius of each of the 318 curves averaged 29 ft.
a. If he takes the curves at the posted speed limit (30 mph) , what is his centripetal acceleration?
b.At that speed , what centripetal force is acting on him and his bike?
Physics Gravitation Level: Misc Level
Each of a pair of binary stars with individual mass (M) is in circular orbit of radius (R) The systems center of mass is at rest. what is the speed of each star in terms of G, M and R?
Physics Work,Power & Energy Level: Misc Level
A bullet of mass (m) and initial speed (v) strikes, and is embedded in the end of a uniform rod of mass (2m) and length (L)originally at ret. The rod pivots about a fixed axis at its center.
a)what is the angular momentum of the bullet/ rod system with respect to the axis through the rod s pivot?
b)what is the angular speed of the rod after the collion?
c)How much kinetic energy is lost in the collion?
Physics Rotational Mechanics Level: Misc Level
A uniform solid cylinder of mass 100. kg and radius 50.0 cm is mounted so it is free to rotate about an axis that passes through the centers of its circular ends. (Like a toilet paper roll core, only solid) A 10.0 kg block is hung from a mass less cord wrapped around the cylinders circumference. when the block is released, the cord unwinds and the block accelerates downward. what is the blocks acceleration?
Physics Force & Laws Of Motion Level: Misc Level
A uniform rod is placed such that its lower end rests on a rough floor and its upper end rests against a perfectly smooth wall. The angle between the rod and the floor is theta. Show that the minimum coefficient of static friction between the rod and the floor is 1/2 tan theta.
Physics Force & Laws Of Motion Level: Misc Level
A uniform rod is placed such that its lower end rests on a rough floor and its upper end rests against a perfectly smooth wall. The angle between the rod and the floor is theta. Show that the minimum coefficient of static friction between the rod and the floor is 1/2 tan theta.
Physics Force & Laws Of Motion Level: Misc Level
A coin of mass (m) rests on a turntable some distance (r) from the axis of rotation. The turntable rotates with angular velocity (w). Derive an expression in terms of these" givens" for the minimum coefficent of static friction between the turntable and the coin, if the coin is not to slip.
Physics Gravitation Level: Misc Level
The diameter of the Sun is 13.9x10 to the 8th m, and the distance from the Earth to the Sun is 1.5 x 10 to the 11 th m. How long it take for the Sun to disappear after it touches the horizon during sunset? (lgnoring effects due to refraction with in Earths atmosphere.)
