A cubic box with an edge of exactly 1 cm has a volume of: A. 10−9 m3 B. 10−6 m3 C. 10−3 m3 D. 103 m3 E. 106 m3
A firefighter mounts the nozzle of his fire hose a distance 32.1 m away from the edge of a burning building so that it sprays from ground level at a 45° angle above the horizontal. After quenching a hotspot at a height of 9.09 m, the firefighter adjusts the nozzle diameter so that the water […]
A slab of ice floats on a freshwater lake.what minimum volume must the slab have for a 45.0kg women to be able to stand on it without getting her feet wet? she then stands on a boat and what is the vertical acceleration and how much of the ice is in the water
A water pipe tapers down from an initial radius of r1 = 0.23 m to a final radius of r2 = 0.08 m. the water flows at a velocity v1 = 0.84 m/s in the larger section of pipe. 1) what is the volume flow rate of the water?
Determine the angular velocity of the 12-kg inner gear, measured clockwise, when the link has made two revolutions starting from rest.
F the intensity of an electromagnetic wave is 80 mw/m2, what is the amplitude of the magnetic field of this wave
How much energy is required to rotate the propeller at 5600 rpm? ignore the energy required to push the air?
In a certain oscillating lc circuit, the total energy is converted from electrical energy in the capacitor to magnetic energy in the inductor in 1.47 μs. what are (a) the period of oscillation in microseconds and (b) the frequency of oscillation? (c) how long after the magnetic energy is a maximum will it be a […]
An elevator does 150,000 J of work while exerting a force of 1000 N to take people to the top floor of a building. What distance does the elevator travel? 3 m 150 m 149,000 m 150,000,000 m
E) An astronaut lands on an alien planet. He uses a pendulum (L = 10.0cm) to produce simple harmonic motion, as shown in this graph.c. What is the acceleration due to gravity on the surface of the planet in m/s2? Determine the number of g-forces.
