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A piece of metal with a mass of 3.8 kg and density of 1808 kg/m3 is suspended from a string and then completely immersed in a container of water. The density of water is 1000 kg/m3.
(a) Determine the volume of the piece of metal.
(b) Determine the tension in the string after the metal is immersed in the container of water.
An object is placed 19cm from a certain mirror. The image is half the size of the object, inverted, What is the radius of curvature of the mirror
A sine wave with amplitude 20V is connected to a 10K resistor. Calculate the peak, rms, and average currents through the resistor. What power rating should the resistor have
A stationary whistle emits a sound of 188Hz. If passengers in a car hear the whistle with a frequency of 198 Hz, how fast was the car moving? Make use of 340 m/s for the sound velocity.
In a parking lot, an SUV of mass 2000 kg driving at 5 m/s collides head on with a sports car of mass 1000 kg driving in the opposite direction. Determine the velocity of the sports car before the collision
Water is ejected from a garden hose of radius 1.07 cm at a speed of 4.57 m/s. Find the flow rate through the hose
It has been suggested that rotating cylinders about 12 mi long and 5.1 mi in diameter be placed in space and used as colonies. What angular speed should such a cylinder have so that the centripetal acceleration at its surface equals free-fall acce..
A generating station is producing 2.00 106 W of power that is to be sent to a small town located 8.0 km away. Find the power used to heat the wires if the power is transmitted at 1300 V
A 3.08 kg block starts from rest at the top of a 30° incline and accelerates uniformly down the incline, moving 2.13 m in 1.60 s. Find the magnitude of the frictional force acting on the block
three uniform thin rods, each of length L = 39 cm, form an inverted U. The vertical rods each have a mass of 15 g; the horizontal rod has a mass of 32 g. Elucidate what are (a) the x coordinate and (b) the y coordinate of the system's center of ma..
Glavin and nicole are running in the bluenose marathon. Glavin stops for a rest when nicole passes him. How long does it take for glavin to catch nicole
A helicopter propeller blade starts from rest and experiences a constant angular acceleration of 10.5 rad/s2. Find the speed of a point on the blade 5.35 m from the axis of rotation
A torque of 14Nm is applied to a heavy wheel whose moment of inertia is 34 kgm2. What is the angular acceleration of the wheel
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