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A train moves in one direction for 5.5 hours covering any 100 mile part of the journey in 1 hour.
a) Is the train necessarily moving at a constant speed?
b) Is the train's average speed for the entire journey necessarily equal to 100 mph?
A 0.247 kilogram ball is approach a player horizontally with a speed of 15.7 m/s. find what is the magnitude of the average force
a spherical capacitor is comprised of a solid inner conduction sphere of radius a with positive charge q and an
A series of equipotential lines are shown right. Points A- D are shown, An electron travels from A to B, and then to C, and then to D. What is the work done on the electron by the field, as measured in eV
An electron in a vacuum is first accelerated by a voltage of 21100 V and then enters a region in which there is a uniform magnetic field of 0.644 T at right angles to the direction of the electron’s motion.
A coil of inductance 128.7 mH and unknown resistance and a0.62 μF capacitor are connected in series with an alternatingemf of frequency 690 Hz. what is the resistance of the coil
A rocket, initially at rest on the ground, accelerates straight upward from rest with constant acceleration 29.4m/s2. Find the maximum height ymax reached by the rocket
Unpolarized light of intensity I0 is incident on the following arrangements of polarizing sheets. The first polarizer is oriented vertically; the second is oriented so it makes an angle of 30o by the vertical; the third and last polarizer makes an an..
Using a map of the United States we find that Atlanta, GA is in a direction north of east from Dallas, TX. What is the displacement from Dallas to Chicago
A 65 kg hiker has fallen down a hole. One rescuer attaches a rope to the injured hiker and then a second rescuer pulls the injured hiker straight up out of the hole at a steady rate. How much force would the second rescuer need to exert on the rope t..
A wheel rotates about a horizontal axis. It has an outerradius R1= 21.2 cm and mass M1=4.51 kg. what is the kinetic energy of the rotating wheel
If an organ pipe, 2 ft long and with one end closed and one end open, how long is the second organ pipe
Harry is on a boat that is capable of a maximum speed of 10 kilometers per hour in water, how much time is required for the crossing
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