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A cube of mass m = 6.55 kg is placed on an inclined plane of mass M = 10.07 kg, which makes an angle ? = 42.20° with the horizontal. What is the normal force on the inclined plane
Consider two spheres of radius a with their centers separated by a distance d>>a. Find the capacitance of the system of the two spheres
A cylindrical tank is to be designed to contain 5kg of compressed nitrogen at a pressure of 20MPa and temperature of 25?C. What are the external dimensions
A neutral conductor contains a hollow cavity in which there is a +100 nC point charge. what is the charge on the exterior surface of the conductor
An intern pushes a 72 kg patient on a 15 kg gurney, producing an acceleration of 0.60 m/s2. How much work does the intern do by pushing the patient and gurney through a distance of 2.5 m
The rms current in a copy machine is 5.26 A, and the resistance of the machine is 19.7?. find the peak power delivered to the machine
The rear window of a van is coated with a layer of ice at 0°C. The density of ice is 917 kg/m3, What is the maximum thickness of ice above this area that the defroster can melt in 3.9 minutes
An electric blanket is connected to a 120-V outlet, What is the resistance of the heater wire in the blanket
An engine is built to extract power from the temperature difference in the ocean. what is the maximum theoretical efficiency of such an engine
A soccer player kicks the ball toward a goal that is 23.0 m in front of him. Find the speed of the ball when the goalie catches it in front of the net
A swimmer, capable of swimming at a speed of 1.50 m/s in still water (i.e., the swimmer can swim with a speed of 1.50 m/s relative to the water), How long does it take the swimmer to cross the river
A tiger leaps horizontally from a 6.5 m high rock with a speed of 4.1 m/s. How far from the base of the rock will she land
Water is being pumped 100 meters up a hill through a hose at a rate of .012m^s/s. what is the water pressure at the bottom of the hose
A Carnot engine whose high-temperature reservoir is 400K takes in 520 J of heat at this temperature in each cycle, compute the temperature of the low-temperature reservoir
Using a Time Domain Reflectometry (TDR) probe (rod length 30 cm) to estimate the soil water content of a wet sandy loam soil. alculate the volumetric wetness of the soil using the Topp and Davis (1985
A 10 nC point charge is at the center of a 2.0m x 2.0m x 2.0 mcube. What is the electric flux through the top surface of the cube
Coffee filters behave like small parachutes, with a drag force that is proportional to the velocity squared, Fdrag = Kv2. Find the time for the combined filters to reach the ground
A small rigid object carries positive and negative 4.00 nC charges. It is oriented so that the positive charge has coordinates, Find the electric dipole moment of the object
In diving to a depth of 983 m, an elephant seal also moves 693 m due east of his starting point. What is the magnitude of the seal's displacement
Spiderman, whose mass is 70.0 kg, is dangling on the free end of a 12.6-m-long rope, the other end of which is fixed to a tree limb above. find How much work was done by the gravitational force on Sp
An airplane moves at 120 m/sec to the west with respect to the air. How fast does the airplane move
A box of books is initially at rest a distance D = 0.515 m from the end of a wooden board. Find the speed of the box as it reaches the end of the board
A hanging mass, M1 = 0.18 kg, is attached by a light string that runs over a frictionless pulley to the front of a mass M2 = 0.36 kg that is initially at rest on a frictionless table. Find the tensi
A Carnot engine operating between a warmer unknown temperature and a reservoir of boiling helium at 1.76 K has an efficiency of 56%. What is the warmer temperature
A rubber ball is dropped from rest 3.3m onto level ground. Bouncing back the ball loses 25% of its mechanical energy. To what height does it rebound