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1) A 5.00x105-kg rocket is accelerating straight up. Its engines produce of thrust, and air resistance is . What is the rocket's acceleration? Explicitly show how you follow the steps in the Problem-Solving Strategy for Newton's laws of motion.
2) Commercial airplanes are sometimes pushed out of the passenger loading area by a tractor.
(a) An 1800-kg tractor exerts a force of backward on the pavement, and the system experiences forces resisting motion that total 2400 N. If the acceleration is 0.150 m/s2, what is the mass of the airplane?
(b) Calculate the force exerted by the tractor on the airplane, assuming 2200 N of the friction is experienced by the airplane.
(c) Draw two sketches showing the systems of interest used to solve each part, including the free-body diagrams for each.
A current of 10.0 mA is maintained in a single circular loop with a circumferenceof 1.60 m. A magnetic fieldof0.550 T is directed parallel tothe plane of the loop. What is the magnitude of the torque exertedby the magnetic field on the loop?
A 1.4Kg block and a 2.6kg block are attached to opposite ends of a light rope. what is the acceleration of the lighter block
When monochromatic light shines perpendicularly on a soap film(n = 1.33) with air on each side, the second smallestnonzero film thickness for which destructive interference ofreflected light is observed is 386 nm. What is the vacuum wavelength of the..
A uniform disk of mass M=12.0 kg and radius R=.75 m is free to rotate about a frictionless axle through its center. compute the roational kinetic energy
A small cubic block of copper (Cu) is carefully dropped into a beaker half full of mercury (Hg): Calculate the resulting equilibrium forces on the block (it is not bobbing or not moving), Prove if the copper block will float or descend to the bottom
A refrigerator has a surface area of 6.04 m2. It is lined with 0.0885-m-thick insulation whose thermal conductivity is 0.0300 J/(s m C °). How much heat per second is being removed from the unit
A 30 kg box rests at the top of 30 degree incline before it is released. The top of the incline is 5.0 m above the floor. How fast will it be moving when it reaches the bottom of the ramp if the surface is frictionless?
Which of the following will create a magnetic field? Which of the following will emit an EM wave? Choose all that apply.
q1. a 78.9 kg man steps off a platform 4.57 m above the ground. he keeps his legs straight as he falls but at the
Two circuits contain an emf produced by a moving metal rod, like that shown. The speed of the rod is the same in each circuit, other than the bulb in circuit 1 has one-half the resistance of the bulb in circuit 2.
A 16-cm-diameter cylinder that is 39cm long contains 60g of oxygen gas at 20?C, What is the number density of the oxygen
An arrow is shot into the air from a 5 foot platform with an initial velocity of 80 ft per second. What does the arrow reach maximum height
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