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Coefficient of linear expansion for brass = 2.0*10^-5 degC^-1). Ignore any effects that might occur due to change in the thickness of the slits.
A skateboarder starts up a 1.0--high, 30 ramp at a speed of 5.1 . The skateboard wheels roll without friction. How far from the end of the ramp does the skateboarder touch down?
Four point charges, each having a charge with a magnitude of 1.5 µC, are at the corners of a square whose sides are 6 m long. Find the electrostatic potential energy of this system under the f
A chair of weight 3.0 N lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of F = 39.0 N directed at an angle of 40.0 below the horizontal and the chair
A 1000 kg aircraft going 25 m/s collides with a 1500 kg aircraft that is parked and they stick together after the collision and are going 10 m/s after the collision. If they skid for 6.6 seconds be
Considering the orbiting electron to be a small current loop, determine the magnetic moment associated with this motion. (Hint: The electron travels around the circle in a time equal to the period o
When a current of I = 22 A exists in the wire, the wire swings upward and, at equilibrium, makes an angle with respect to the vertical, as the drawing shows. Find (a) the angle and (b) the tension i
What are the magnitude and direction of the magnetic field causing the force? If the field is up, then enter a number greater than zero. If the field is down, then enter a number less than zero.
A long, straight metal rod has a radius of 5.00 cm and a charge per unit length of 34.0 nC/m. Find the electric field at the following distances from the axis of the rod, where distances are measure
A rock is thrown vertically upward with a speed of 11.0 from the roof of a building that is 70.0above the ground. Assume free fall. -In how many seconds after being thrown does the rock strike the g
A 3.59-F and a 5.68-F capacitor are connected in series across a 30.0-V battery. A 6.41-F capacitor is then connected in parallel across the 3.59-F capacitor. Determine the voltage across the 6.41-
The current in the shunt resistor is 3.78 mA when the galvanometer reads full scale. Find the full-scale current of the galvanometer.
At what point along the line connecting the two charges is the net electric field due to the two charges equal to zero?
What would happen to any water-ice contained within a fragment? Is this type of change considered a chemical change or a physical change?
The speed of sound in the air inside a 0.640-m long gas column is 340 m/s. What is the fundamental resonant frequency of this air column if it is (a) open at one end and closed at the other end? (b)
What sound level are you being exposed to? You can neglect any absorption, reflection, or interference of the sound. The threshold of hearing is 1.0 × 10-12 W/m2.
a) Calculate the electric field at the position of the 2.00 µC charge due to the 7.00 µC and - 4.00µC charges. b) Use your answer in part a) to calculate the force on the 2.00 &mic
A very long solid cylinder of radius R = 4 cm has a uniform volume charge density ? What would be the effective linear charge density along the length of this cylinder?
A flare is dropped from an airplane flying horizontally at uniform velocity (constant speed in a straight line). Neglecting air resistance, the flare will A) quickly lag behind the plane B) remain v
A 70 driver gets into an empty taptap to start the day's work. The springs compress 2.4×10-2 . What is the effective spring constant of the spring system in the taptap?
If a curve with a radius of 74m is perfectly banked for a car traveling 71km/h , what must be the coefficient of static friction for a car not to skid when traveling at 94km/h?
In an amusement park ride, cars are suspended from L = 4.21 m cables attached to rotating arms at a distance of D = 6.28 m from the axis of rotation. The cables swing out at an angle of = 46° wh
What is the minimum coefficient of friction between tires and road that will allow cars to negotiate the turn without sliding off the road?
Calculate the magnitude of the electric field 49 cm from the center of the sphere.
The initial acceleration of the first particle is observed to be 8.0 m/s2 and that of the second to be 9.0 m/s2. The mass of the first particle is 6.3 multiplied by 10-7 kg.What is the magnitude of th