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A solid block of wood is a cube whose volume is 1x10^-3m^3. When dropped into a swimming pool, it floats such that 20% of it is above water. How much does the block of wood weigh? (Use 10^3 kg/m^3 for the density of water.) PLEASE EXPLAIN. The answer is 7.8 im just trying to understand the problem so if u could show the steps with numbers i'd appreicate it.
In a college homecoming competition, eighteen students lift a sports car. Though holding the car off the ground, each student exerts an upward force of 390 N. What is the mass of the car in kilograms? What is its weight in pounds.
Where is center of mass of the system
If 1.00 mol of oxygen is heated at constant pressure of 1.00 atm from 10.0?C to 25.0?C. What is the change of volume of the gas in this process
Bacteria vary somewhat in size, but a diameter of 2.00?m is not unusual, What would be surface area (in square millimeters) of such a bacterium, assuming that it is spherical
A 790-kg object and an 889-kg object are separated by 11.0 m. At what position (from the less massive object) can the 260-kg object be placed so as to experience a net force of 10 N towards the less massive object.
You are driving to grocery store at 15 m/s .You is 140 m from an intersection when the traffic light turns red. Suppose that your reaction time is 0.70 s. and that your car brakes with constant acceleration. How far are you from the intersection whil..
What would happen to the gravitational force between Earth and the Sun. A reconnaissance plane flies 600 km away from its base at 240 km/h, then flies back to its base at 320km/h.
The inside of the cylindrical can shown above has cross-sectional area 0.005 m^2 and length 0.15 m. The can is filled with an ideal gas and covered with the loose cap. The gas is heated to 363K and some is allowed to escape from the can so that re..
A concave shaving mirror has a focal length of 95 cm. find the image position of a cologne bottle placed in front of the mirror at a distance of 165cm. Calculate the magnification of the image. Is the image real or virtual? Is the image inverted o..
A particle of charge +1.5 nC is placed at a corner of a Gaussian cube with sides 12.0cm. What is an electric flux through the cube.
What is the speed of the projectile immediately before it hits the ground if air friction does one and a half times as much work on projectile when it is going down as it did when it was going up.
A 1.80Kg brick is sliding next to on a rough horizontal surface at 13.5m/s .If the brick stops in 4.80, how much mechanical energy is lost.
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