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A rock weighing 7404 N rock with a volume of 29 L is completely submerged in mercury. The density of mercury is 13.6 kg/L.
1) Decide the density of the rock.
2) Decide the buoyant force on the rock.
Suppose you are planning a trip in which a spacecraft is to travel at a constant velocity for exactly nine months, as measured by a clock on board the spacecraft, and then return home at the same speed. Upon return, the people on earth will have a..
To get up on the roof, a person (mass 70.0 kg) places a 6.00-m aluminum ladder (mass 10.0 kg) against the house on a concrete pad with the base of the ladder 2.00 m from the house. calculate the magnitudes of the forces on the ladder
A 2.20 H coil with a resistance of 2.18×10^2 ohms is in series with a 1.29×10^3 ohms resistor. What is the peak value of the potential difference across the coil
An athlete is in an 800 m running sprint race. One lap around the track is 400 m. What is the athlete's average speed during this first lap of the race
The potential energy of the strong interaction between two quarks has the approximate form V(r)=br, where b is some constant. Assume that we have a light quark of mass m interacting with a very massive quark. using the same basic approach that we use..
Two forces are applied to a car in an effort to move it, as shown in the following figure, where F1 = 410 N and F2 = 376 N. (Assume up and to the right as positive directions.), What is the resultant of these two forces
A circular plastic disk of radius R, carrying a surface charge density? = ks, is rotating at constant angular velocity, Find the magnetic moment of the rotating disk
The height of a helicopter above the ground is given by h = 3.00 t3, where h is in meters and t is in seconds. After 2.00 s, the helicopter pilot lets go of a small mailbag. How long (in seconds) after its released does the mailbag reach the ground?
A boy in a wagon is moving at 3.1 m/s east when another boy begins pulling on the wagon in the direction opposite to its motion at 1.25 m/s^2. How far from the starting point is the wagon
A particle of mass m moves on a smooth horizontal table. It is attached to a light, inextensible string that passes through a small hole in the table and carries a mass m, which hangs vertically. Find the Lagrangian of the system as a whole.
a 2. kg ball moving to the right with a speed of 25m/s collides with a 15. kg ball going in the same direction with the speed of 20 m/s. What is the speed of the second ball after collision if it travels in the same direction as before
Suppose you are listening to the WKAR FM radio station on a car radio. The carrier frequency of the transmission is 90.5 MHz. Calculate the wavelength of the carrier wave
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