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A solid block of copper (p = 8920 kg/m^3) with a volume of 0.2 m^3 is submerged in water.
(a) What is the buoyancy force on the block?
(b) Then, the copper block is formed into a boat so that it now floats. What is the minimum volume of the boat that will allow it to float?
A carpenter carries his 8kg toolbox at constant speed up 2 flights of stairs, each 3m high, in one minute. How much work did the carpenter do in carrying the toolbox up 2 flights
A source emits sound uniformly in all directions. A radial line is drawn from this source. On this line, determine the radial positions of two points, 0.786m apart, such that intensity level at one point is 1.72 dB greater than that at the other.
A square, single turn coil 0.20m on a side is placed with its plane perpendicular to a constant magnetic field. An emf of 18mV is induced in the coil winding as the area of the coil decreases at the rate of 0.10m2/S. What is the magnitude of the m..
A student is running at her top speed of 5.2m/s to catch a bus, which is stopped at the bus stop. For what time does she have to run in that case
Investigators are researching the appearance of a strange movement of objects in what the local community considers a haunted house. how strong was the magnetic field that produced this EMF
A uranium and iron atom reside a distance R = 51.10 nm apart. The uranium atom is singly ionized; the iron atom is doubly ionized, What is the magnitude of the force on the electron from the uranium ion
Imagine four resistors: R1=600 ohms, R2=600 ohms, R3=300 ohms, R4=300 ohms. R1, R2, and R3 are connected together in a parallel plane; then R4 is connected in series with them; and finally the combination of all four resistors is connected to a 50..
question1a wire has a mass of 1.00 gcm is positioned on a horizontal surface with the coefficient of friction of 0.250.
A 30 charge is moved from a point where = 190 to a point where = -70. How much work is done by the force that moves the charge
A hockey puck has a mass of 0.113 kg and is at rest. A hockey player makes a shot, exerting a constant force of 28.0 N on the puck for 0.16 s. With what speed does it head toward the goal
The index of refraction for red light in water is 1.331 and that for blue light is 1.340. A ray of white light enters the water at an angle of incidence of 60.8°
A pendulum bob is released from the some initial height such that the speed of the bob at the bottom of the swing is 1.9m/s. What is the initial height of the bob
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