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An object hanging in air, as in Figure A below, caused the scale to balance at 0.420 kg. When the object was submerged in water, as in Figure B, the scale balanced at 0.22 kg. The density of water is equal to 1000 kg/m3. The density of air is so small that it can be ignored.
what is the volume of the object?
what is the density of the object?
Two charges, +e and -e, are a distance of 0.870 nm apart in an electric field, E, that has a magnitude of 3.09 kN/C, Calculate the torque on the dipole in the electric field
compute the force of the Earth's gravity on an electron and evaluate it with the force exerted on the electron by an electric field of magnitude 12500-V/m (a relatively small field). The mass and charge of an electron are given on the inside back ..
An airplane pilot sets a compass course due west and maintains an airspeed of 213km/h. Find the magnitude of the wind velocity
A circuit consists of a 6.0V battery, a 37-mH inductor, and four 55 ohm resistors. Find the characteristic time for this circuit
how much time passes before the brick lands on the ground. If the wind speed is 26 mph, find the velocity of the plane in still air.
When two identical ions are separated by a distance of 5.9 10-10 m, the electrostatic force each exerts on the other is 6.0 10-9 N. Evaluate how many electrons are missing from each ion?
A massless spring with spring constant 22.10 N/m hangs vertically. A body of mass 0.280 kg is attached to its free end and then released. Assume that the spring was unstretched before body was released. How far below the initial position does the ..
In a television tube, electrons originally at rest are accelerated by a uniform electric field of magnitude 4 times 105N/C during the first 5cm of the tube's length; after that they move at essentially constant velocity another 45cm before hitting..
A 218.7 kg satellite is in a circular orbit of 26,273 miles (42,300,000 m) in radius. What is the velocity (speed) of the satellite
A disk released from the top of an inclined plane has a speed of 5.52 m/s at the bottom. How high is the upper end of the inclined plane
In Mexico, a courageous diver runs horizontally off the edge of a sea side cliff 48.8 m above the sea (about six stories high). Calculate her speed and direction angle of her velocity as she hits the water(or rocks)
Compute the voltage drop along a 26 m length of copper wire which has diameter 1.665 mm and carries a 15 A current
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