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Robert has just bought a new model rocket, and is trying to measure its flight characteristics. The rocket engine package claims that it will maintain a constant thrust of 12.9 N until the engine is used up. Robert launches the rocket on a windless day, so that it travels straight up, and uses his laser range-finder to measure that the height of the rocket when the engine cuts off is 19.0 m. He also measures the rocket\'s peak height, which is 23.5 m. If the rocket has a mass of 0.763 kg, how much work is done by the drag force on the rocket during its ascent?
A daredevil is shot out of a cannon at 43 degrees to the horizontal with an initial seed of 25m/s. A net is positioned at a horizontal distance of of 50m from the cannon from which it is shot. At what height above cannon should the net be placed i..
A 0.5 meter diameter bicycle wheel is initially rotating at 60RPM rolls to rest at a constant rate in 10 seconds. What is its initial angular speed in radians per second
A toaster oven has a equivalent resistance of 10.5 ?. When pluged in a 120 V circuit, (Assume direct current) , What's the power of the oven
A 2150 kg railroad flatcar, which can move with negligible friction, is motionless next to a platform. What is the speed of the flatcar if he then stands on it
A positive charge, Q = 45 is placed on the x-axis at x = -1.9 cm. A positive charge which is twice as large is brought from infinity to a point x = +1.9 cm on the x-axis. what would be the speed of the 2*(45) charge at infinity
A solid cylinder of radius r1 = 3.0 cm, length h1 = 6.0 cm, emissivity 0.87, and temperature 35°C is suspended in an environment of temperature 64°C. What is the cylinder's net thermal radiation transfer rate
A projectile (mass = m) is launched vertically upward with initial velocity v. When it has reached a height h above its launch position, it is still moving upward, but at that moment it explodes into two pieces. For what time interval was this impa..
A train consists of 4300kg locomotive pulling two loaded boxcars. The first boxcar has a mass of 12,700 kg and the second 16,300 kg. with what force in newtons do the boxcars pull on each other
Two small insulating spheres with radius 9×10-2 are separated by a large center-to-center distance of 0.52. One sphere is negatively charged.
A 25.0 g object moving to the right at 17.0 cm/s overtakes and collides elasticity with a 7.0 g object moving in the same direction at 15.0 cm/s. find the velocity of each object after the collision
If she is served 200 of coffee at 85 in a well-insulated container, how much ice at 0 must she add to obtain a final temperature of 33.
Place the following temperatures in order from least to greatest, and explain what each temperature represents using thermodynamically sound principles:
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