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It has been suggested that rotating cylinders about 10 mi long and 5.0 mi in diameter be placed in space and used as colonies. What angular speed must such a cylinder have so that the centripetal ac
A 3.00-mol sample of oxygen gas is confined to a 4.95-L vessel at a pressure of 8.06 atm. Find the average translational kinetic energy of the oxygen molecules under these conditions.
A cylinder contains a mixture of helium and argon gas in equilibrium at 170°C. (a) What is the average kinetic energy for each type of gas molecule?
Starting 2 seconds after the speeder passes, the police car accelerates at 6.0m/s^2 for 6 seconds, and then maintains constant speed until it catches the speeding car. (a) How many seconds after the
A BMW of mass 2.6 103 kg is traveling at 42 m/s. It approaches a 1.1 x 103 kg Volkswagen going 24 m/s in the same direction and strikes it in the rear. Neither driver applies the brakes. Neglect the
A person pushes a 16.0-kg shopping cart at a constant velocity for a distance of 16.0 m. She pushes in a direction 20.0° below the horizontal. A 32.0-N frictional force opposes the motion of th
A uniform electric field E=100000 N/C causes the 5.0 g ball to hang at a 450 angle. What is the charge on the ball?
Block A of mass 3.6 Kg is on Block B of mass 6.6 Kg. Block B is on a frictionless surface and the coefficient of static friction between the two blocks is 0.36.
If a storm window is installed having the same thickness of glass but with an air gap of 7.5 cm between the panes, what will be the corresponding rate of heat loss?
Suppose that he uses 1/2 liter of tap water at 59o C, and that the water falls 40 cm each shake, and the chef making 30 shakes each minute. Neglecting any heat loss to the room, how long must he sha
Water flows through a horizomtal tube of length 25cm and internal diameter 1 mm under a constant head of the liquid 15cm high. If a volume of 72,5 cm3 of water issues from the tube in 10 minutes, C
Two metal plates are held together by two steel rivets, each of diameter .2cm and length 1.0cm. How much force must be applied parallel to the plates to shear off both rivets?
After the collision, the pendulum and object stick together and swing to a maximum angular displacement, theta. (a) Find the initial velocity of the pendulum. (b)Find the maximal angel, theta.
If the coefficient of static friction between your coffee cup and the horizontal dashboard of your car is µ s=.800,how fast can you drive on a horizontal roadway around a right turn of radius
A 3-kg cart moving to the right with a speed of 5.9 m/s has a head-on collision with a 5-kg cart that is initially moving to the left with a speed of 1.0 m/s. After the collision, the 5-kg cart is m
Callisto and Io are two of Jupiter's satellites. The distance from Callisto to the center of Jupiter is approximately 5 times farther than that from Io to the center of Jupiter. (a) Do the satellite
A 12-kg block on a horizontal frictionless surface is attached to a light spring (force constant = 0.80 kN/m). The block is initially at rest at its equilibrium position when a force (magnitude P =
A certain string just breaks when it is under 25 N of tension. A boy uses this string to whirl a 2-kg stone in a horizontal circle of radius 3 m. The boy continuously increases the speed of the ston
A 2.0-kg block slides on a frictionless 15 degree inclined plane. A force acting parallel to the incline is applied to the block. The acceleration of the block is 1.5 m/s^2 down the incline. What is
Write an expression (in terms of i and j ) for the position of A relative to B as a function of t, where t = 0 when the ships are in the positions described as above. At what time is the separation
The student notes that the dime slides outward 2.25 s after she has switched on the turntable. (a) Why does the dime slide outward? (b) What is the coefficient of static friction between the dime an
A sailboat is sailing due east at 7.10 mph. The wind appears to blow from the southwest at 12.7 mph. What is the true wind speed? What is the true wind direction? (south of west).
Consider light that is refracted by a prism shaped like an equilateral triangle. The incident ray is parallel with the prism's base. What is the total deflection of the ray, given that the index of
Find the numerical value of the electric field. What are the charge density and total charge on each plate? Draw the equipotential surfaces at 0.10 V and 0.20 V.
However, these particals land at the same distance (250 meters) and at the same time. The machine flash a warning for the technician if the information to configure the launch is incorrect (Explain