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An asteroid fragment wandering through space is often referred to as a meteoroid. When entering Earth's atmosphere some of the materials in the meteoroid chemically react with the gases in our atmosphere. For example, some meteoroids will contain carbon. Carbon will burn while going through our atmosphere. What is the most likely compound that will form from the reaction of carbon as it goes through our atmosphere?
A small light has a 1.0 V, 4.8 W bulb that is powered by a transformer concocted to a 120 V dc power source. How many turns does the primary coil have
A motor has an internal resistance of 12 ohms. When running, the motor has a back emf of 30 V and draws a current of 4.0 A. What is the supply voltage in this case
A 40 kg child sits in a swing suspended with 2.5 m long rope. Use energy conservation to determine the speed the child will have at the bottom of the arc when she is let go
With the engines off, a spaceship is coasting at a velocity of+220 m/s through outer space. The ship carries rockets thatare mounted in friing tubes, What is the velocity of the rocket
Scott is rolling down a 30° slope on his skateboard. The total mass of Scott and the skateboard is 75 kg. What is Scott's acceleration
When a "dry-cell" flashlight battery with an internal resistance of 0.37 ? is connected to a 1.56-? light bulb, Find the ratio Pwet/Pdry of the power delivered to the bulb by the wet-cell battery to the power delivered by the dry-cell battery
a disoriented physics professor drives 3.33 north then 4.69 west and then 1.61 south.1-use components to find the
Two capacitors are connected in parallel across the terminals of abattery. One has a capacitance of 2.9 uF and the other acapacitance of 3.9 uF. These two capacitors together store 7.4 x10-5 C of charge. What is the voltage of the battery?
when an object falls and hits the floor without bouncing off the floor the normal force of the floor on the object
At time zero, an object is thrown upward at a speed of 14.0 m/s from the top of a 91.0 m tall building. What time is it when the object hits the ground
A 1000 kg car is pushed up a 17.5 degree incline, for a distance of300 m at a constant speed. assume the applied force is directedparallel to the plane. how much work does this force do if the plane is frictionless? has a coeffiecient of friction ..
The drawing shows a 182-kg crate hanging from the end of a steel bar. The length of the bar is 0.08 m, and its cross-sectional area is 4.00 10-4 m2. Determine the shear stress on the bar
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