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You are driving into St. Louis, Missouri, and in the distance you see the famous Gateway-to-the-West arch. This monument rises to a height of 192 m. You estimate your line of sight with the top of the arch to be 9.8° above the horizontal. Approximately how far (in kilometers) are you from the base of the arch?
A potential difference is applied between the electrodes in a gas discharge tube. What is the current in the tube
Suppose that a particle accelerator is used to move two beams of particles in opposite directions. In a particular region, electrons move to the right at 9350 m/s and protons move to the left at 1681 m/s. The particles are evenly spaced with 0.085..
a line of positive charge is formed into a semi circle of radius r 60.0 cm. the charge per unit length along the
Two nonconservative forces are present: friction does -2.00 104 J of work on the car, and a chain mechanism does +3.00 104 J of work to help the car up a long climb. Illustrate what is the change in the car's kinetic energy, ΔKE = KEf - KE0, fro..
Ice has formed on a shallow pond, and a steady state has been reached, with the air above the ice at -4.1°C and the bottom of the pond at 4.0°C. how thick is the ice
An electron moves with a speed of 8.0 × 10^6 m/s along the +-axis. It enters a region where there is a magnetic field of 2.5 T, Calculate the magnitude of the magnetic force on the electron
Given two vectors a = 3.1i -3.4j and b =6.7i+8.7j, What is the magnitude (in m) of the vector a, Find the direction (in ° = deg) of the vector a, Find the magnitude of the vector b
The raising and lowering angular momentum operators, J-hat(subscript +), J-hat(subscript -) are defined in terms of the Cartesian components J-hat(subscript x), J-hat(subscript y), J-hat(subscript z) of angular momentum J-hat by J-hat(+)=J-hat(x)+..
The density of a 4.07-m long rod can be described by the linear density function ?(x) = 117 g/m + 15.1x g/m2. Determine the total mass of the rod
An elevator has mass 680kg , not including passengers. What is the maximum number of passengers that can ride in the elevator? Assume that an average passenger has mass 65.0 kg
Discuss how big is a physical protocol data unit and determine the number of simultaneous transmissions for many network architectures.
A soccer player extends her lower leg in a kicking motion by exerting a force with the muscle above the knee in the front of her leg. What is the force exerted by the muscle if its effective perpendicular lever arm is 2.10 cm
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