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Moves with simple harmonic motion over a horizontal frictionless surface. At the instant that it is displaced from equilibrium by -0.050m, what is its acceleration?
Calculate the distance "d" that the block travled down the incline.
Calculate the probability of a water molecule being in its flexing ground state and in each of the first two excited states, assuming that it is in equilibrium with a reservoir (say the atmosphere)
An electron with an initial speed of 500,000 m/s is brought to rest by an electric field. What was the potential difference that stopped the electron? What was the initial Kinetic energy of the elec
A proton in a high-energy accelerator is givena kinetic energy of 86.7 GeV.
Find the speed with which the pebble strikes the ground when the pebble is fired (a) horizontally, (b) vertically straight up, and (c) vertically straight down.
A science student is riding on a flatcar of a train traveling along a straight, horizontal track at a constant speed of 11.0 m/s. The student throws a ball into the air along a path that he judges t
The cylindrical space station in the figure below, 200 in diameter, rotates in order to provide artificial gravity of 4.0 for the occupants. How much time does the station take to complete one rota
A force of 315 N is applied horizontally to a crate in order to displace the crate 35.0 m across a level floor at a constant velocity. as a result of this work, the crate;s internal energy is incre
A cannon shoots a cannon ball. The cannon is inclined at 45 degrees from the horizontal. The initial velocity of the ball is 147 m/s. Find the magnitude of the cannon ball's velocity 3.9 seconds aft
The mass of the second disk is 0.45 kg and its radius is 0.38 m. What is the angular velocity of the two disks combined?
A person can lift 45 kg ( aprox 100lb). Using specific gravity as 10.17 How many cubic meters of the metal could the person lift in
Suppose the steel alloy is used for an automobile axle that rotates at an average rotational velocity of 600 revolution per minute (RPM). What is the maximum lifetime of continuous driving that are
A 13 g bullet traveling 213 m/s penetrates a 2.0 kg block of wood and emerges going 152 m/s. If the block is stationary on a frictionless surface when hit, how fast does it move after the bullet eme
A uniform pole 6 m long and weighing 150 N is supported by a boy 1 m from one end and a man 1.5 m from the other end. At what point must a weight of 450 N be attached so that the man supports twice
What is the least amount of time it takes for the bob to swing from a position of maximum displacement to the equilibrium position of the pendulum?
A second ball is thrown at an angle of 30.3° with the horizontal. At what speed must the second ball be thrown so that it reaches the same height as the one thrown vertically?
A rotating cylinder about 16 {rm km} long and 7.4 km in diameter is designed to be used as a space colony. With what angular speed must it rotate so that the residents on it will experience the sam
A crankshaft with a diameter of 3.0 , rotating at 2400 comes to a halt in 1.90 .What is the tangential acceleration of a point on the surface of the crankshaft?
A constant torque of 22.0 N·m is applied to a grindstone whose moment of inertia is 0.130 kg·m2. Using energy principles, and neglecting friction, find the angular speed after the gri
A diesel engine does not use spark plugs to ignite the fuel and air in the cylinders. Instead, the temperature required to ignite the fuel occurs because the pistons compress the air in the cylinder
Compute the potential energy stored in the bow, if the arrow of mass 4.75 10-2 kg leaves the bow with a speed of 20.0 m/s. Assume that mechanical energy is conserved.
A 326-g object is attached to a spring and executes simple harmonic motion with a period of 0.250 s. If the total energy of the system is 5.83 J, find (a) the maximum speed of the object, (b) the fo
What current flows in the lines? What power is expended as heat in both lines together (distinct from power delivered to customers)?
What mass (in grams) of steam at 100°C must be mixed with 212 g of ice at its melting point, in a thermally insulated container, to produce liquid water at 14.0°C? The specific heat of water