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Cars A and B are traveling around the circular race track. At the instant shown, A has a speed of 78ft/s, Determine the relative acceleration of car A with respect to car B at this instant
A 990 g block oscillates on the end of a spring whose force constant is k = 66 N/m. What is the fractional decrease in amplitude per cycle
If an object is placed 0.820cm from the objective lens, calculate the distance between the lenses when the microscope is adjusted for a relaxed eye
Evaluate the change in z (i.e., z) in going from the point (0,0) to the point (1,1) for the differentials: (1) dz = (x^2 + y^2) dx + xy dy and (2) dz = xy dx + xy dy
Consider two unknown point charges, Q1( on the left) and Q2 are separated by a distance, o.981m. Find the ratio Q2/Q1 in both magnitude and sign
Two point charges -90.0 mC and +40.0 mC, fixed on the x-axis, At what point along x-axis is the electric field zero
Using the accepted ionic radius of the ammonium ion, NH4+, NH4Br is predicted to have a rock-salt structure with (6,6)-coordination. However, at room temperature NH4Br has a cesium-chloride structur
The electric field between two equal but opposite point charges, at a point four-ninth the distance from the negative charge to the positive charge, is 4.39*10<-5 N?C, What is the magnitude of ea
An unknown capacitance C is in series with a 3.0uF capacitor. This pair is in parallel with a 1.0uF capacitor, Make a circuit diagram for this Network
A father pulls his young daughter on a sled with a constant velocity on a level surface a distance of 10 m. how much work does the father do
a 5.0 kg dog sits on the floor of an elevator that is accelerating downward at 1.20 m/s^2 , find the magnitude of the force of the dog on the elevator floor
A planet Z has a hole bored in it at its equator , and a shaft of light from it's star goes straight down that hole to the bottom, what is the circumference and radius of planet Z
You have a grindstone ( a disk) that is 80.0 kg, has a .349-m radius, and is turning at 104.0 rpm, Calculate the angular acceleration of the grindstone
A 199.9 kg satellite is in a circular orbit of 26,273 miles (42,300,000 m) in radius. What is the velocity (speed) of the satellite
A proton travels with a speed of 3.00 ? 106 m/s at an angle of 55.0° with the direction of a magnetic field of 0.520 T in the +y direction. determine the magnitude of the magnetic force on the pr
An aircraft weighing 803 N is accelerated at 10 m/s2 for 9 seconds, at which time the aircraft launches. How much work was done on the aircraft
The electron gun in an old TV picture tube accelerates electrons between two parallel plates 1.2cm apart with a 28kV potential difference between them. What is the electric field strength between th
By what factor would its kinetic energy decrease if the car traveled half as fast
A 50 kg person climbing a rope slides down after reaching the top. find The frictional force acting upward on the person
If 5.0 ´ 1021 electrons pass through a 20-W resistor in 10 min, what is the potential difference across the resistor
zorch, an arch enemy of superman, decides to slow earth's rotation to once per 27.0 h by exerting an opposing force at, How long must zorch push with this force to achieve his goal
a bus contains a 1740 kg wheel (a disk that has a .56 m radius) and has a total mass of 9600 kg. How high can the bus climb with this stored energy and still have a speed of 3.10 m/s at the top of the
a bicyclist of mass 54 kg puts all his weight on each downward-moving pedal as he pedals up a steep road. determine the magnitude of the maximum torque he exterts in the process
the velocity of an airplane is 50km/hr due north. the plane the plane flies into a cross wind of 50km/hr due east at a right angle
Compressed air can be pumped underground into huge caverns as a form of energy storage. how many homes could this internal energy serve for one day