Physics Misc Topic Level: University
Consider a roller coaster ride in a amusement park. The inner loop has a radius of 5.00 m. The top of the ride inside the loop gose 20.00 m above the ground.(a) What is the minimum speed at the top that assures that a car that slides along he track will not fall off the track?
(b) How high up must the car have been to attain this speed?
(c) A sneaky amusement park owner substitutes a spherical car. The spherical rolls without slipping down the incline. What is the minimum height to attain a speed of 7.00 m/s?
Physics Misc Topic Level: University
The light intensity for human beings to comfortably read a page is 1 Watt/ Meeter^2. The intensity of sunlight striking the earth is 1500 Watts/meter^2. As you travel in the solar system towards the outer planets the solar intensity diminishes. Given the radii of the orbits of the planets below calculate the intensity of light on the planet and find what the furthest planet that could be traveled to and still have enough light to read by.Earth 1.5
Mars 2.3
Jupiter 7.7
Saturn 14
Uranus 28
Neptune 45
Pluto 59
Physics Misc Topic Level: University
A loop is placed near a long straight wire. The loop carries a current a current of 2A and the wire carries a current of 10A. The radius of the loop is 0.1m. What distances must the edge of the loop be from the wire such that the magnetic field at the center of the loop be from the wires such that the magnetic field at the center of the loop be zero? In which direction ( clockwise or counter) must the current in the loop be traveling?
Physics Misc Topic Level: University
Force on current carring wireIn a high magnetic field experiment a conducting bar carrying a 75 kA passes through a 30 cm long region containing a 22 T magnetic field. If the bar makes a 60 degree angle with the field direction what force is necessary to hold it in its place.
Physics Misc Topic Level: University
Displacement CurrentA 1010nF capacitor with circle parallel plates 1.28 cm in diameter is accumulating charge at the rate of 23.1 mC/s at some instant in time. What will be the induced magnetic field strength 12.1 cm radially outward from the center of the plates? and what will be the value of the field strength after the capacitor is fully charged?
Physics Misc Topic Level: University
InterfrenceA person driving at V 16.6 m/s crosses the line connecting two radio transmitters at right angles as shown in the figure below. The transmitters emit identical signals in phase with each other which the driver receives on the car radio. When the car is at point A L1 = 440 m and L2= 141 m away from the transmitters the radio picks up a maximum net signal. What is the longest possible wavelength of the radio waves?
Question Diagram
Physics Misc Topic Level: University
Coulom's Law and Field IntensityWhat is the magniyude and direction of the electric force on a -1.2 uC charge at a point where the electric field is 2500N/C and is directed alond the +y axis?
(a) 0.15 N -y direction
(b) 0.15 N +y direction
(c) 0.0030 N -y direction
(d) 0.0030 N +y direction
(e) 4.3 N +x direction
Physics Misc Topic Level: University
CapacitorAn automatic external defibrillator delivers 125 J of energy at a voltage of 1050 V. What is the capacitance of this device.
Physics Misc Topic Level: University
TimeperiodWhat happens to the period of a simple pendulum if the length is doubled.What happens if the suspended mass is doubled?
Physics Misc Topic Level: University
Projectile MotionIn the egg toss two people toss araw egg back and forth as they move farther apart. If the force required to break the eggs shell is about 5N and the mass of the egg is 50g, estimate the maximum separation distance for the egg throwers. Make whatever reaonable assumptions you need about the launch angle and hand movement.
Physics Misc Topic Level: University
PotentialsAn electron starting from rest acquires 4.90 ke V of kinetic energy in moving from point A to point B. How much kinetic energy would a proton acquire starting from rest at B and moving to point A?
Economics Misc Topic Level: University
MANAGERIAL ECONOMICS AND BUSINESS STRATEGY1.The text points out that asymmetric information can have deleterious effects on market outcomes.
a.Explain how asymmetric information about a hidden action or a hidden characteristic can lead to moral hazard or adverse selection.
b.discuss a few tactics that managers can use to overcome these problems
Physics Misc Topic Level: University
The specific heat capacity of ice is about 0.5 cal/g* oC. Supposing that it remains at that value all the way to absolute zero, calculate the number of calories it would take to change a 1-gram ice cube to absolute zero (-273oC) to 1 gram of boiling water. How does this number of calories compare with the number of calories required to change the same gram of 100oC boiling water to 100oC steam?
Physics Misc Topic Level: University
When I2 dissolves in methanol, CH3OH, what type of forces must be overcome within the solid I2 to allow it to dissolve?
Physics Misc Topic Level: University
The isotope Cesium-137 which has a half life of 30 years is a product of nuclear power plants. How long will it take for this isotope to decay to about one-sixteenth its original amount?
