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A test rocket is fired vertically upward from a well. A catapult gives it an initial speed of 81.0 m/s at ground level. Its engines then fire and it accelerates upward at 4.10 m/s2 until it reaches an altitude of 940 m. At that point its engines fail, and the rocket goes into free fall, with an acceleration of -9.80 m/s2. (You will need to consider the motion while the engine is operating separate from the free-fall motion.)
(a) How long is the rocket in motion above the ground?
A soccer ball with mass 0.446 kg is initially moving with speed 1.40 m/s. Over what distance must the player's foot be in contact with the ball to increase the ball's speed to 6.40 m/s
1 a resistor and a capacitor are connected in series to an ac generator which is initially set to 120 v rms and a
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 asteroid is moving along a straight line. A force acts along the displacement of the asteroid and slows it down. If the asteroid slows down over a distance of 1.3× 106 m determine the magnitude of the force
Blood circulating from the heart to the hands and back to the heart travels a distance of about 1.9 m in 42 s. Find the average speed of the blood
During the year, the company sold a division which had revenue and expenses (not comprised in the previous figures) of $100,000 and $75,000, respectively. The division was sold at a loss of $55,000. All items are subject to an income tax rate of 4..
a cable of cross-sectional area of 4.00 cm2 and 12.0 m long stretches by 2.00 mm when subjected to a load of 25000 kg.
Two farmers are standing on opposite sides of a very large empty field that is 520.6 m across. What is the temperature of the air
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radio waves travel at the speed of light which is 3x108 ms. how many minutes does it take for a radio message to reach
question the charging circuit for the flash system of a camera uses a 130uf capacitor that is charged from a 250v power
In open heart surgery a much smaller amount of energy will defibrillate the heart. What voltage is applied to the 9.00 µF capacitor of a heart defibrillator that stores 45.0 J of energy
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