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Question1
Two window washers Bob and Joe are on a 3.00 m long, 380 N scaffold supported by two cables attached to its ends. Bob weighs 845 N and stands 1.00 m from left end. Two meters from the left end is 500 N washing equipment? Joe is 0.500 m from the right end and weighs 900 N. particular that the scaffold is in rotational and translational equilibrium, what are the forces on each cable?
Question2
A minivan moving at 38 m s passes an unmarked state police car moving at 24 m s. The electromagnetic waves produced by radar gun equation frequency of 8.25 X 10^9 Hz. What is magnitude of the difference in frequency between waves emitted by gun and those that are reflected back by the car?
A 71.0kg football player is gliding across very smooth ice at 2.00m/s, What is the player's speed afterward if the ball is thrown at 18.0m/s relative to the ground
An 8.00-mH inductor and a 2.00ohm resistor are wired in series to an ideal battery. A switch in the circuit is closed at time 0, at which time the current is 0. determine the time constant for the circuit
A spherical, conducting shell (inner radius = a and outer radius = b) has a charge +Q placed on it. What is the electric field everywhere
Two point charges q_1 = 2.10 nC and q_2 = -6.10 nC are 0.100 {rm{ m}} apart. Point A is midway between them; point B is 0.080 {rm{ m}} from q_1 and 0.060 {rm m} from q_2 Take an electric potential to be zero at infinity.
The distance between two telephone poles is 48.0 m. while a 0.600 kg bird lands on the telephone wire midway between the poles, the wire sags 0.200 m. Draw a free-body diagram of the bird. (Do this on paper. Your instructor might ask you to turn i..
A 12.0 m long conveyor belt, inclined at 40.0°, is used to transport bundles of newspapers from the mailroom up to the cargo bay to be loaded on to delivery trucks. Each newspaper has the mass of 1.00 kg, and there are 26 newspapers per bundle. Concl..
Find the approximate mass of the dark and luminous matter in the Milky Way galaxy. Assume the luminous matter is due to approximately 1011 stars of average mass 1.5 times that of our sun
A position vector in the first quadrant has an x component of 8 m and a magnitude of 10 m. What is the value of its y component?
A pilot is flying an airplane that is used for aeriel surverying to make a map of ground detail of New Jersey. If the scale of the map is to be 1:50,000 and the camera has focal length of 6in
What are magnitude and direction of the force
The length of a simple pendulum is 0.65 m and the mass of the particle (the "bob") at the end of the cable is 0.26 kg. What is the angular frequency of the motion
The eukaryotic ribsome is an extremely large macromolecular complex that may be 25 nanometers in diameter or larger. Estimate the diffusion constant of a ribosome in m2/sec and Picometers2/sec.
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