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Q. Two objects attract each other gravitationally with a force of 2.8×10-10 when they are 0.65 apart. Their total mass is 4.6 .Find their individual masses.
Q. A model rocket is launched vertically at v0 =55 m/s. It accelerates at 2.2 m/s2 until the engine stops at 150 m above ground. (a) What is the maximum height the rocket reaches? (b) How long is the rocket in the air?
If the perceived frequency becomes constant at 440 Hz, what is terminal speed at the paratrooper? Take the speed sound in air to be 343 m/s and assume the paratrooper always remains below the helicopter.
A 17g particle is moving to the left at 24m/s. How much net work must be done on the particle to cause it to move to the right at 40 m/s.
How much work is completed by the system in this process. Determine the increase in entropy produced by the parachutist; assume the air temperature is 21 degrees C. How much work is completed by the system in this process.
After the engine is ignited, what is the rocket's speed when the spring has stretched 19.00 cm past its natural length? What would be the rockets speed after travelling the distance if it weren't tied down to spring.
A car traveling at 18 {rm m/s} runs out of gas while traveling up a 24.0^circ slope. How far up the hill will it coast before starting to roll back down.
Bats are capable of navigating using the earth's field-a plus for an animal that may fly great distances from its roost at night. If, as sleeping during the day, bats are exposed to a field of a equal magnitude but different direction than the earth..
How to find the magnetic field
Would a plucked guitar sting vibrate for a longer time or a shorter time if the instrument had no sounding board? explain.
The deflection plates in an oscilloscope are 10 cm by 2 cm with a gap distance of 1 mm. A 100 volt potential difference is suddenly applied to the initially uncharged plates through a 950 ohm resistor in series with the deflection plates.
A 253 kg log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp. The ramp is inclined at 30.0° with respect to the horizontal.
How much work should Denise do to drag her basket of laundry of mass 6.0 kg a distance of 3.0 m along a floor, if the force she exerts is a constant 50.0 N at an angle of 70.0° with the horizontal.
compute the linear speed due to the Earth's rotation for a person at a point on its surface located at 40o N latitude (this would be near the Ohio river valley, for instance). The radius of the Earth is 6.40 ξ 106 m. (For comparison, the speed of ..
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