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Estimate the number of gallons of gasoline consumed by the total of all automobile drivers in the United States, per year.
Global positioning satellites (GPS) can be used to determine positions with great accuracy. The system works by determining the distance between the observer and each of several satellites orbiting
What is the net force of a 4.0 N force and an 9.0 N force acting on an object for each of the following conditions? (a) The forces act in opposite directions.
A 25 g piece of aluminum at 85C is dropped in 1.0 L of water at 10C which is in an insulated beaker. Assuming that there is negligible heat loss to the surroundings, determine the equilibrium temper
One of the twelve charges, which happens to be on the positive x axis, is now moved to the center of the circle. Find the magnitude of the net electric force exerted on this charge.
A liter of air, initially at room temperature and atmospheric pressure is heated at constant pressure until it doubles in volume. Calculate the increase in its entropy during this process.
The flight time is determined by the initial vertical component of the velocity and by the acceleration. The flight time does not depend on whether the object is moving horizontally while it is in t
Two 2.20 cm x 2.20 cm plates that form a parallel-plate capacitor are charged to +/-0.708 nC . What is the electric field strength inside the capacitor if the spacing between the plates is 1.50 mm ?
A 100.0 m long rod with a diameter of 3.0 mm has a charge of 1028 C. What is the approximate electric field 4 mm from the surface of the rod, not near either end? (The constant e0 is 8.85 × 10
A small particle with a mass of 2 kg carrying a charge of 1 nC is at the surface of a charged spherical conductor of radius 3 mm. If the surface charge density is 1 C/m^2, find the acceleration of t
At a 62% heating efficiency, determine the quantity of natural gas, in g, required to melt 25g of solid gold, initial temperature is 20 degrees celsius, to produce molten goldat 1850 degrees celsius
An airport has runways only 161 m long. A small plane must reach a ground speed of 40 m/s before it can become airborne. What average acceleration must the plane's engines provide if it is to take o
A ship, carrying freshwater to a desert island in the Caribbean, has a horizontal cross-sectional area of 2850 m2 at the waterline. When unloaded, the ship rises 9.00 m higher in the sea. How much wat
The pilot of an airplane traveling 170 {km/h} wants to drop supplies to flood victims isolated on a patch of land 140 {m} below. The supplies should be dropped how many seconds before the plane is d
The plates each have an area of 2 × 10-3 m2, and the spacing between the plates is 6 × 10-3 m. There is no dielectric between the plates. Calculate the energy stored in the capacitor.
When the bus moves with constant velocity, the passenger observes that the falling raindrops are now making an angle of 20 with respect to the vertical.What is the ratio of the speed of the raindrop
Now a conductor is inserted into the capacitor. The thickness of the conductor is 1/3 the distance between the plates of the capacitor and is centered inbetween the plates of the capacitor. What is
(A) Show that the position of a particle on a circle of radius R with center at the origin (x=0,y=0) is given in unit vectors by r=cosθi+sinθj, where θ is the angle of the position
A vector C1 has a magnitude of 40.0 units and points 35.0° above the positive x axis. A second vector C2 has a magnitude of 65.0 units and points in the negative x direction. Use the component m
In a race, John runs 1.00 mile in 4.02 min, mounts a bicycle, and rides back to his starting point, which is also the finish line, in 3.02 min. What is the magnitude of John's average velocity for t
(a) If the current #1 through the bottom loop is increasing with time, what is the direction of the induced current in the top loop? (b) If the current #2 through the top loop is decreasing with tim
Calculate the temperature of the air inside the balloon which will produce the required lift. Assume thatthe outside air temperature is 0*C and that air is an ideal gasunder these conditions. What f
Find the direction of the average force on the ball. (in degrees from the initial direction of motion of the ball)
(a) If the radius of the Gaussian surface were doubled, how much flux would pass through the surface? (b) What is the value of the point charge in coulombs?
Two positive point charges, each 16 uC (micro Coulombs), lie along the x-axis at x = -0.12m and x = +0.12m. Find the electric field at the point (0, 0.20 m) on the y-axis.