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Two skaters, a man and a woman, are standing on ice. Neglect any friction between the skate blades and the ice. Determine the acceleration of the woman
A billiard ball strikes and rebounds from the cushion of a pool table perpendicularly. The mass of the ball is 0.38 kg. What is the average net force (magnitude and direction) exerted on the ball by t
the right triangle with vertex P at the origin, base b, Determine the potential at the vertex P
The 95 mu F capacitor in a defibrillator unit supplies an average of 6500 W of power to the chest of the patient during a discharge lasting 5.0 ms
A horizontal power line of length 52 m carries a current of 1.4 kA, find direction of the magnetic force on the power line
The membrane that surrounds a certain type of living cell has a surface area of 4.4 x 10-9 m2, The potential on the outer surface of the membrane is +52.2 mV greater than that on the inside surface.
An aircraft with a mass of 856 kg accelerates from 0 to 83 m/s in 9 seconds, at which time the aircraft launches. What is the kinetic energy of the aircraft
Two point charges Q1 = 3.6 µC and Q2 = 8.0 µC are initially very far apart. They are then brought together, How much work does it take to bring them together
The nucleus of a helium atom contains two protons. In a simple model of this nucleus, What is the electric potential energy of the two protons
A young woman on a skateboard is pulled by a rope attached to a bicycle. The velocity of the skateboarder is v = (4.6m/s )x, find the work the rope does on the bicycle
Two point particles of charge Q1 = 43 µC and Q2 = 89 µC are found to have a potential energy of 38 J. What is the distance between the charges
Suppose both skaters are initially moving v, but one has mass m and the other 2m. What point do they rotate about after they meet? What is the linear velocity of this point? What is the angular velo
A 350-kg roller coaster starts from rest at point A and slides down the frictionless loop-the-loop, How fast is this roller coaster moving at point B
Charged particles round a 1.7 km radius circular particle accelerator at nearly the speed of light. Find the centripetal acceleration of the charged particles
In a scientific test conducted in Arizona, a special cannon called HARP shot a projectile straight up to an altitude of 180.0 km. if the projectiles initial speed was 3.00 km/s, how long did it take
Estimate the electron drift velocity. Estimate the current density. Estimate the electric field in the wire.
A spaceship is visiting Planet X. While descending to the surface, its rockets produce 25 kN of upward thrust and the spaceship's speed decreases at a rate of 0.15 m/s2. What is the mass of the spac
External forces compress 21 mol of ideal monatomic gas; during the process the gas transfers 15 kJ of heat to its surroundings, How much work was done on the gas
Assuming that the total energy consumption scales in the same way as BMR, how many Calories are needed by the person weighing 150 lb
An object of heat capacity 100 cal/°C is initially at 30°C. Estimate the resulting entropy change of the universe
Air "breaks down" when the electric field strength reaches 3*10^6 N/C, causing a spark. How many electrons must be transferred from one disk to the other to create a spark between the disks
The sound level of a single vacuum cleaner is about 75dB and a television is about 55dB. What is the sound level number
The magnetic field between the poles of an electromagnet is 2.17 T. A coil of wire is placed in this region so that the field is parallel to the axis of the coil. How many turns are there in the coi
Components dropping 10, 20, 30, and 50 volts what is the V applied. What is the algebraic sum of the voltages around a closed loop
Assume that you exhale the air at your body's temperature of 37 oC with relative humidity of 80%. Will you see your breath