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I lift a 3 kg rock up and place it on a table 2 meters above the ground. How much gravitational potential energy does the rock have relative to the ground? Answer 60 J
A 4 kg ball is raised a vertical distance of 2 meters. Using the conservation of energy principle calculate the final speed of the ball right before it hits the ground
A 0.65-g particle remains stationary when placed in a uniform electric field (on earth). What is the electric field's direction
There is a uniform electric field throughout the region given by E = 4.9i + 7.1j + 3.6k in N/C units, What is the magnitude of the total flux through the five non-shaded faces
A loudspeaker of mass 25.0 is suspended the distance of = 2.40 below ceiling by two cables that make equal angles with the ceiling. Each cable has a length of = 2.50. What is the tension in each of cables.
If a car travelling at 52 km/h will skid 18 m when its brakes lock, how far-off will it skid if it is travelling at 120 km/h when its brakes lock.
He would like a prescription for contact lenses to serve the same purpose. What is the exact contact lens prescription, in diopters.
A 15 g bullet traveling at 485 m/s strikes a 0.9 kg block of wood that is balanced on a table edge 0.7 m above ground. If the bullet buries itself in the block, find out distance D at which the block hits the floor.
An 8cm^3 ice cube is floating in a 10x10x10 cm glass container completely filled with water, How much water is going to spill over when the ice melts
Thus, to eliminate the difficulties with motion sickness, designers must choose the distance between the astronaut's feet and the axis about which the space station rotates to be greater than a certain least value. What is this least value.
A 3.4 kg piece of aluminum at 28°C is placed in 1.0 kg of water in a Styrofoam container at room temperature (20°C)
Water has a mass per mole of 18.0 g/mol, and each water molecule (H2O) has 10 electrons. (a) How many electrons are there in 4.79 liters of water? (1 liter is equivalent to 1.00 × 10-3 m3) (b) What is the net charge of all these electrons?
A fully loaded station wagon has a mass of 1690 kg. If each of its four tires is inflated to a gauge pressure of 211 kPa, what is the total tire area in contact with road.
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