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Mars rotates about its axis once every 88 642 s. A spacecraft comes into the solar system and heads directly toward Mars at a speed of 0.800c. What is the rotational period of Mars according to the beings on the spaceship?
Two 3.25μF capacitors are connected in series across the terminals of a 50.0-Hz ac generator that has a peak voltage of 244V. Determine the rms (peak) current in the circuit
A sledge loaded with bricks has a total mass of 17.8 kg and is pulled at constant speed by the rope inclined at 20.4° above the horizontal. The sledge moves a distance of 20.7 m on a horizontal surface. The coefficient of kinetic friction between ..
A vinyl record plays at 45.0 rpm. Assume it takes 10 s for it to reach this full speed, starting from rest. How many revolutions does the record make before reaching its final angular speed
A 0.060kg ball is propelled by a 1.10kg racquet from rest to a speed of 40.0m/s. If the two objects are in contact for 250ms, calculate the average force exerted by the racquet on the ball
A hydraulic jack is made with a small piston 1.2 cm in diameter that is used to move a large piston 5.2 cm in diameter. how heavy a load can he lift with the jack
An air-track glider attached to a spring oscillates between the 12.0cm mark and the 61.0cm mark on the track. find maximum speed of the glider
A 2.55-cm-diameter parallel-plate capacitor with a spacing of 0.38 mm is charged to 300 V. What is the total energy stored in the electric field
A source of radio waves is emitted from the center point of our galaxy 1.9 x 104 light years away. Nine picowatts of power from these waves blanket the surface of the Earth facing the center point.
Analyse average density of the white dwarf
An unloaded Hummer has a standard ground clearance of 40cm, and an unloaded mass of 2000kg. What is the total mass of the hummer
Capacitors C1= 13 uF and C2=25 u F are each charged to 15 V , then disconnected from the battery without changing the charge on the capacitor plates. estimate the potential difference across each capacitor
What is the radius of a bobsled turn banked at 75.0° and taken at 30.0 m/s, assuming it is ideally banked
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