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A 1280- car and a 2250- pickup truck approach a curve on the expressway that has a radius of 204 . a) At what angle should the highway engineer bank this curve so that vehicles traveling at 59.1 can
Suppose a cube of aluminum which is 1.00 cm on a side accumulates a net charge of +1.80 pC. (a) What percentage of the electrons originally in the cube was removed?
To solve this problem, you can consider a cubic box on the Moon 1m on each edge, and find how long it will take to fill the box.
At what height above the surface of the earth does the weight of the object decrease to .99mg?
A piston with a radius of 10 cm and a mass of 50 kg presses down on water inside a cylinder. The atmospheric pressure of 100 kPa also presses down on the top piston. What is the water pressure?
For each of the anatomical levers listed, indentify the class of lever represented; identify the fulcrum, effort point, and resistance point; and name the kind of movement favored by this type of le
When each sphere has a charge of +1.00 µC, the spacing doubles. Assuming that the spheres have a negligible diameter, determine the spring constant of the springs.
Two point charges lie along the y-axis. A charge of q1 = -8.5 μC is at y = 6.0 m, and a charge of q2 = -7.5 μC is at y = -4.0 m. Locate the point (other than infinity) at which the total elect
A charge of -4.00 nC and a charge of -5.35 nC are separated by a distance of 40.0 cm. Find the position at which a third charge of +7.80 nC can be placed so that the net electrostatic force on it is
An adventurous archaeologist crosses between two rock cliffs by slowly going hand-over-hand along a rope stretched between the cliffs. He stops to rest at the middle of the rope . The rope will brea
A bird migrating toward its summer nesting site travels 3200 miles in a direction 18° East of North. How much farther North is the bird at the end of this migration?
A third point charge q = +9.3 µC is fixed at the origin. The net electrostatic force exerted on the charge q by the other two charges has a magnitude of 25 N and points in the +y direction. De
A large box containing your new computer sits on the bed of your pickup truck. You are stopped at a red light. The light turns green and you stomp on the gas and the truck accelerates. To your horro
A pulley of radius 0.3 m is rotating counter-clockwise and is pulling a weight upward. The weight slows the spinning pulley so that it comes to rest. The angular acceleration is -2.10 R/s^2
What is the total momentum of the two players before they collide (vectors to the right should be designated as positive)?
A 5kg block of uniform density (with a length of 20 cm and a height of 8 cm) is balanced on two points (one 2 cm from the left side and one 6 cm from the right side). What are the normal forces on t
At equilibrium the three balls form an equilateral triangle with sides of 31.0 cm. What is the common charge q carried by each ball?
Find, by dimensional analysis, how the period T of a satellite orbiting a planet of mass M depends upon the gravitational constant G, the radius of circular orbit R and M. Do you think we are justif
In what direction and at what speed does the wreckage move (a)if one car was driving north and one south? (b) if one car was driving north and one east
A convex lens is held over a piece of paper outdoors on a sunny day. When the paper is held 21 below the lens, the sunlight is focused on the paper and the paper ignites.
Two circular coils carry the same current, but one coil has twice the diameter of the other one. If the larger coil produces a magnetic field B at its center, what is the magnetic field that the sm
A simple harmonic oscillator consists of a 100 g mass attached to a spring whose force constant is 104 dyne / cm. The mass is displaced 3 cm and released from rest.The oscillator is set into motion
The mass is displaced 3 cm and released from rest. Allow motion to take place in a resisting medium. After oscillating for 10 s, the max amplitude decreases to half the initial value. Calculate a-
A simple harmonic oscillator consists of a 100 g mass attached to a spring whose force constant is 104 dyne / cm. The mass is displaced 3 cm and released from rest. Calculate
Find the temperature of the inner wall of the space station, assuming that the outside surface radiates into an environment that is very cold - essentially at 0.0k.