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At an instant when the distance between the two particles is 2m, the kinetic energy of the moving particle is 16J. Determine the distance separating the two particles when the moving particle is mom
During a test of a bulletproof vest, a handgun is fired at point blank range. the mass of the bullet is 2.12 g and it takes .341 s to travel through the gun barrell, during this time it has a consta
If the blood bag is suspended 0.70 above the needle, how long does the transfusion take? (Neglect the viscosity of the blood flowing in the plastic tube between the bag and the needle.)
A 9.0V battery supplies a 2.5mA current to a circuit for 5.0hr. a.) How much charge has been transferred from the negative tothe positive terminal?
If the potential difference between the wire and the shell is 1.0x10^3 volts, what is the electric field at the surface of the wire? At the cylinder?
An ideal gas has the following initial conditions: Vi = 495 cm3, Pi = 6 atm, and Ti = 100°C. What is its final temperature if the pressure is reduced to 1 atm and the volume expands to 1000 cm3?
A passenger feels the seat of the car pushing upward on her with a force equal to 1.67 times her weight as she goes through the dip. If r = 26.3 m, how fast is the roller coaster traveling at the bo
What is the minimum speed that the ball must have to make the field goal? assume appropriate aiming
A 22.2 kg mass is attached to the cart using a massless string draped over the end of a frictionless pulley at the top of the track. What is the expected acceleration of the cart along the air track
Suppose N electrons can be placed in either of two configurations. In configuration 1, they are all placed on the circumference of a narrow ring of radius R and are uniformly distributed so that the
What was the direction of the mug's velocity just before it hit the floor? (Use any variable or symbol stated above as necessary.)
After a package is ejected from the plane, how long will it take for it to reach sea level from the time it is ejected? Assume that the package, like the plane, has an initial velocity of 260 in the
A 0.10 kg ball is thrown straight up into the air with an initial speed of 15 m/s. Find the momentum of the ball halfway to its maximum height.
Find the tensions in the rope to the left and to the right of the mountain climber.
What must be the magnitude and direction of the third force, such that the object continues to move with a constant velocity?
Find an expression for the maximum safe period of rotation, T, in terms of the variables given above, and the gravitational acceleration, g.
Two conducting spheres, one having twice the diameter of the other, are separated by a distance that is large compared to their diameters. The smaller sphere has charge q and the larger sphere is un
The block leaves the spring at the spring's relaxed length and then travels over a horizontal floor with a coefficient of kinetic friction µk = 0.202. The frictional force stops the block in d
A 2.0 kg wood block is launched up a wooden ramp that is inclined at a angle. The block's initial speed is . The coefficient of kinetic friction of wood on wood is .
A charge of +80 µC is placed on the x-axis at x=0. A second charge of -50 µC is placed on the x-axis at x = 50 cm. What is the magnitude of the electrostatic force on a third charge of 4
A negative ion is moving east near the equator where the Earth's magetic field is horizontal to the north. The direction of the magnetic force on the ion is.
A copper wire with a resistance of 4.00Ω at 20.0o C has a length of 5.00 m. If it is to have the same resistance and cross sectional area at 40.0o C to what length must it be cut?
Only two horizontal forces act on a 3.0 kg body that can move over a frictionless floor. One force is 9.0 N, acting due east, and the other is 7.2 N, acting 56° north of west. What is the magnit
A person with perfect pitch sits on a bus bench listening to the 455 Hz horn of an approaching car. If the person detects a frequency of 475 Hz, how fast is the car moving?