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You are designing a delivery ramp for crates containing exercise equipment. The crates of weight 1470N will move with speed 2.2m/s at the top of a ramp that slopes downward at an angle 25.0degrees. The ramp will exert a 621N force of kinetic friction on each crate, and the maximum force of static friction also has this value. At the bottom of the ramp, each crate will come to rest after compressing a spring a distance x. Each crate will move a total distance of 8.0m along the ramp; this distance includes x. Once stopped, a crate must not rebound back up the ramp. Calculate the maximum force constant of the spring k_max that can be used in order to meet the design criteria.
A block of mass 50 kg is free to slide on a horizontal frictionless surface. A constant force F acting 20° above the horizontal is applied to the block. What is the magnitude of the applied force F
A glass plate (n= 1.61) is covered with a thin, uniform layer of oil (n=1.16). A light beam of variable wavelength is normally incident from air onto the oil surface. calculate the thickness of the oil film
what is the magnitude of its velocity after the collision. A soccer player applies a force of 60.5 N to a soccer ball while kicking it. If the ball has a mass of 0.42kg, what is the acceleration of the soccer ball.
Two crates connected by a rope of negligible mass lie on a horizontal surface. Create A has mass mA and crate has mB. calcuate the tension in the rope connecting the block
A heat engine operates between a reservoir at 28°C and one at 432°C. What is the maximum efficiency possible for this engine
Calculate the camel's eastward displacement while he crosses the desert. reply in units of km.
A 1.20 kg ball and a 4.00 kg ball are connected by a 74.0 cm long massless, rigid rod. What is the rotational kinetic energy of the structure
A 9800 kg boxcar traveling at 19 m/s strikes a second boxcar at rest. The two stick together and move off with a speed of 13 m/s
A 12 gram ball is dropped form a height of 2.50m and is moving and is moving at 3.2m/s just before it hits the floor. how much total mechanical energy was lost in the fall
What is the speed of a beam of electrons when the simultaneous influence of an electric field of 1.48×104V/m and a magnetic field of 4.66×10?3T, What is the period of the orbit
you must determine the acceleration of a rocket so that its equipment can be designed to survive. the rocket will have a burne time of t=30 second, what is maximum altitude of the rocket
Two point charges .03 m apart have an electric potential energy -90 microjoules . The total charge is 20 nanoCoulombs. What is the lesser charge
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