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A car moving at 10 m/s encounters a bump that has a circular cross-section with a radius of 30 m. What is the normal force exerted by the seat of the car on a 60-kg passenger when the car is at the top of the bump?
Police investigators, examining the scene of an accident involving two cars, measure 72 -long skid marks of one of the cars, Estimate the initial speed of the car assuming a level road
Explain how do the five forces of competition in an industry affect its profit potential?
Using a simply pulley/rope system, a crewman on an Arctic expedition is trying to lower a 5.52 kg crate to the bottom of a steep ravine of height 23.9 meters. At what speed will the crewman hit the bottom of the ravine
An alpha particle (the nucleus of a helium atom, with charge +2e and a mass four times that of a proton), What is the speed of the antiproton when the particles are 1.1nm apart
Consider a model thermodynamic system in which the allowed (nondegeerate) energy levels are 0, E, 2E, 3E. Determine how many macrostates are possible
two parallel infinite sheets carry positive unifrom surface charge densities sigma and 3 sigma. what is the magnetude of electrci field between the sheets
What is magnitude of the Coulomb force
A rope is used to pull a 2.72 kg block at constant speed 6.90 m along a horizontal floor. What are the work done by the ropes force
An inductor (L = 400 mH), a capacitor (C = 4.43 F), and a resistor (R = 500 ?) are connected in series. A 50.0-Hz AC source produces a peak current of 250 mA in the circuit. (a) Calculate the required peak voltage Vmax. (b) Determine the phase ang..
The path of an electron, travelling at 3.7 × 104 meters/second, is making the right angle to a magnetic field. A single electron experiences a force of 2.2 × 10-15 Newton's while in the field. What is strength of the magnetic field .
Consider a violin string with a vibrating length of 30 cm. If the speed of a wave on this string is 250 m/s, what is the tension in the string? Hint: You will have to estimate the diameter of the string. Assume the density is the same as that of s..
For someone who chooses y=0 to be 5 meteres above the ground and up as positive, what will he get for the potential energy
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