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The atomic mass of gold is 197 g/mole, and the density of gold is 19.3 g/cm^3. Calculate the interatomic spring stiffness of gold.
A 27 pound meteorite struck a car, leaving a dent 25 cm deep in the trunk. If the meteorite struck the car with a speed of 450 m/s, what was the magnitude of its deceleration, assuming it to be cons
Suppose a volcano on another moon is observed to be ejecting material to a height of about 2.08 x 105 m. Given that the acceleration of gravity on this moon is 1.71 m/s2 find the initial velocity of t
A hot air balloon is rising upward with a constant speed of 20 m/s. When the balloon is 3 m above the ground, the balloonist accidentally drops a compass over the side. a.) How much time elapses bef
At the same time, Ted jumps upward with a speed of 3.5 m/s from a 1.0 m high diving board. Choosing the origin to be at the water's surface, and upward to be the positive x direction, write the x-ve
The entrance to a large lecture room consists of two side-by-side doors, one hinged on the left and the other hinged on the right. Each door is 0.700 m wide.
What are the magnitude and direction of the force acting on the negative charge due to the three positive charges?
The atomic mass of Neon is 20.2u, and that of krypton is 83.8u. The temperature of the krypton is 293K. What is the temperature of the neon?
Two ping-pong balls each have a mass of 2.7 g and carry a net charge of 0.430 µC. One ball is held fixed. At what height should the second ball be placed directly above the fixed ball if it is
How far must the key be depressed for a keystroke to be registered, which happens when the capacitance increases by 3.9 pF?
A 1.5- block rests on top of a 7.5- block. The cord and pulley have negligible mass, and there is no significant friction anywhere. What force must be applied to the bottom block so the top block ac
A system of two sources consist of a solid, non-conducting sphere of radius R=10cm with charge +q uniformly distributed throughout its volume, and point source of -2q located a distance R from the s
A 500kg truck moving at 30 m/s strikes a parked 300kg car. They connect together and move forward. What is the momentumn of the truck before it strikes the car?
An electron moves at a speed of 60.0 m/s directly toward a stationary electron when the two electrons are 1.00 m apart. How close to the stationary electron is the moving electron when it turns arou
1. What is the difference between the electric field, electric potential, and the force exerted by the electric field? 2. How can you define the field without describing the force?
What is the maximum positive velocity reached by the particle and (g) at what time is it reached?
A boat has a mass of 6800 kg. Its engines generate a drive force of 4100 N, due west, while the wind exerts a force of 800 N, due east, and the water exerts a resistive force of 1200 N due east. Wha
A luge and its rider, with a total mass of 86 kg, emerge from a downhill track onto a horizontal straight track with an initial speed of 40 m/s. Assume that they stop with a constant deceleration of
What is the true wind speed if the wind appears to blow from the northeast at 15.0 mph? What is the true wind direction (^\circ north of east) if the wind appears to blow from the northeast at 15.0
Assuming that the earths core has a density of 5000 Kg/m3, core radius of 106m and charge density of 1C/m3 and modeling the core as a solid sphere what is the angular velocity of the core? Does the
What must the potential difference between the plates be to hold the droplet in equilibrium?
By using symmetry analysis, determine the distribution of B(r) (Both B and r have arrow symbols above them denoting they are vectors) Hint: you also need to know the fact that no magnetic monopoles
What is the maximum voltage that can be applied to this capacitor without causing dielectric breakdown?