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A rock weighing 7150 N rock with a volumeof 34 L is completely submerged inmercury. The density of mercury is 13.6 kg/L.
a.) Determine the density of the rock.kg/L
b.) Determine the buoyant force on the rock.
N
At t = 0, a wheel rotating about a fixed axis at a constant angular acceleration of -0.40 rad/s^2 has an angular velocity of 1.5 rad/s, What is the angular position of the wheel at t = 2.0 s
two 10 cm-diameter charged disks face each other 29cm apart. the left disk is charged to - 50 nc and the right disk is
Assume that, when Hiawatha aims vertically, his arrow reaches a maximum height of 20 m. Use this fact to find the initial speed u with which Hiawatha can launch the arrow vertically.
Compute the value of Ra in terms of R1 and R2. how much energy must be added to a 2-kilogram pile of it to increase its temperature from 40*c to 50*c.
A bowling ball of mass 1 kg, drops onto a spring from 0.2 meter height. The spring constant is also 1. What is the velocity when the ball hits the spring
The temperature and pressure in a star's atmosphere are 6.40 multiply.gif 106 K and 0.0260 Pa. Calculate the rms speed of free electrons
A 181.99 kg car that stopped at a traffic light is struck from the rear by a 419.72 kg car. find the velocity of the entangled cars after the collision
the space between two concentric spherical shell conductors is filled with a material with a resistivity of 109 ohmm.
twelve identical point charges q are equally spaced around the circumference of a circle of radius r. the circle is
Two blocks, each of mass m = 2.1 kg, are pushed along the horizontal surface of a table by a horizontal force P of magnitude 5.4 N, Find the frictional force acting on the upper block
An object with total mass mtotal = 15.8 kg is sitting at rest when it explodes into three pieces. One piece with mass m1 = 4.6 kg moves up and to the left at an angle of ?1 = 19.0° above the –x axis with a speed of v1 = 27.8 m/s.
A uniform rod rotates in a horizontal plane about a vertical axis through one end. The rod is 6.00?m long,weighs 11.0?N, and rotatesat 210 rev/min clockwisewhen looked at from above.
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