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The Zacchini family was renowned for their humancannonball act in which a family member was shot from a cannon using either elastic bands or compressed air. what was the magnitude of the force prope
When the temperature of a coin is raised by 71.8 C°, the coin's diameter increases by 2.11 x 10-5 m. find the coefficient of linear expansion
A dentist's drill accelerates from rest at 600rad/s2 for 2.00s and then runs at constant angular velocity for 8.1s . Through how many total revolutions has the drill turned
A 13.5?F capacitor is connected to a power supply that keeps a constant potential difference of 26.0V across the plates. How much energy is stored in the capacitor before the dielectric is inserted
Two capacitors are connected in series. Let 3.40?F be the capacitance of first capacitor, 5.00?Fthe capacitance of the second capacitor, Calculate the potential difference across each capacitor
A parallel-plate air capacitor is to store charge of magnitude 290pC on each plate when the potential difference between the plates is 36.0V, If the area of each plate is 6.80 cm2, what is the separa
The plates of a parallel-plate capacitor are 3.00mm apart, and each carries a charge of magnitude 75.0nC. What is the area of each plate
In a skating stunt known as crack-the-whip, a number of skaters hold hands and form a straight line. obtain the magnitude of the centripetal force
A 0.60 kg stone attached to a string is whirled in a horizontal circle of radius 43 cm as in the figure below. The string makes an angle of 35° with the vertical. Find the speed of the stone
In SI units, the electric field in an electromagnetic wave is described by Ey = 100 sin(107x - ?t ). What is the frequency of the EM wave
A radar unit sends out 0.05 microsecond pulses of microwaves whose wavelength is 25 mm. What is the frequency of these microwaves
The brass bar and the aluminum bar in the drawing are each attached to an immovable wall. At what temperature will the gap be closed
A simple pendulum consists of a ball connected to one end of a thin brass wire. Determine the change in the period of the heated pendulum
In the 1994 movie Speed, a bus wired with explosives must maintain a speed of 50mph or the bus will explode. what is the minimum launch angle required for the jump to be successful
A 14.9 cm long tendon was found to stretch 3.50 mm by a force of 15.0 N. The tendon was approximately round with an average diameter of 8.22 mm. Calculate the Young's modulus of this tendon
A skydiver with his parachute has a combined mass of 79 kg and an approximate frontal area of 0.71 m^2. Calculate the terminal velocity of this skydiver in a horizontal position
A gymnast whose mass is 50.0 kg swings back and forth on a 4.0m long rope. What is her velocity at the bottom of the swing
What is the gravitational force between two 20-kg iron balls separated by a distance of .9 m? What is the height of the table
A gray kangaroo can bound across level ground with each jump carrying it 8.1m from the takeoff point. What is its maximum height above the ground
A thick, vertical iron pipe has an inner diameter of 0.077 m. A thin aluminum (? = 23x10-6 (C°)-1) disk, What is the temperature of the aluminum disk when the disk falls into the pipe
If the central charge shown below is displaced 0.350 nm to the right while the other charges are held in place, find the magnitude and direction of the net force
A vibration sensor, used in testing a washing machine, consists of a cube of aluminum 1.50 cm on edge mounted on one end of a strip of spring steel (like a hacksaw blade) that lies in a vertical pla
A coil of area 0.100 m2 is rotating at 70.0 rev/s with the axis of rotation perpendicular to a 0.200 T magnetic field. If the coil has 700 turns, what is the maximum emf generated in it
Block B in the figure weighs 760 N. The coefficient of static friction between block and table is 0.28; angle ? is 27°; Find the maximum weight of block A for which the system will be stationary
A 1.23-kg box slides up an incline plane with a speed of 8.6 m/s. how long will it take for the box to come to rest