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Projectile A with a speed of 30m/s and Projectile B with a speed of 60 m/s, are released horizontally and simultaneously from the top of a tower
a. Which will hit the ground first?
b. Which will travel farthest?
c. Which ill hit the ground with higher speed
A water molecule consists of an oxygen atom with two hydrogen atomsbound to it (Figure P8.34). Suppose the angle between the two bondsis 102°. where is the center of mass of the molecule
A battery with an emf of 9.00 V has an internal resistance r. When connected to aresistor R, the terminal voltage is 8.80 V and the current is 0.11A. When a second identical battery is added in series and the externalresistor is R = 15 Ohms what i..
two large parallel metal plates are 1.8 cm apart and have charges of equal magnitude but opposite signs on their facing
A square steel plate is 0.2 m on a side and 4 mm thick. Find the displacement of the plate
Lunar astronauts placed a reflector on the moon's surface, off which a laser beam is periodically reflected, What percent accuracy is this, given the average distance to the moon is 3.84
A brick is initially 7.72 cm high and an aluminum can is initially 7.73 cm high. By how much should their temperatures be raised in order for the brick and the can to have precisely the similar height?
Aluminum wire has been utilized to replace copper wire through times of high copper prices. if 20 gauge copper wire has a resistance of 33Ω per kilometre of length, decide the diameter of an aluminum wire with same resistance? (Resistivity of the alu..
The carts of a roller coaster are traveling 2 m/s over the top of the first hill. what speed will the carts have at the bottom of the hill
A 5-lbm toy car is at the end of a spring compressed 2 inches. The linear spring has a force constant of k = 3 lbf/in. How much energy is stored in the compressed spring
An electron traveling at 15 m/s enter a 2.1 T magnetic field. The angle between the velocity and the field is 100 degree. Estimate the radius of the resulting circular path
a certain lightbulb has a tungsten filament with a resistance of 17.7nbspomega when at 20.0degc and 135 degc when hot.
A 2.3A current is flowing in a 25H inductor. A switch is opened, interrupting the current in 1.0ms. Find the induced emf in the inductor
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