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The surfer is catching a wave. Suppose she starts at the top of the wave with a speed of 1.5 m/s and moves down the wave until her speed increases to 8.8 m/s. The drop in her vertical height is 2.5 m. If her mass is 59 kg, how much work is done by the (nonconservative) force of the wave?
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Define a lie in the strict or formal sense and explain what is meant by communication - what is the principal purpose of communication?
The thrust produced by a single jet engine, m=7300kg, creates a force F=73000N. It takes the jet a distance of d=0.84km to take off. What is the take-off speed of the jet
Monochromatic light (lambda = 670 nm) is incident on a single slit and forms a diffraction patter on a screen 95 cm away. what is the separation between the first-order minima
A target in a shooting range consists of a square wooden board of side length S = 0.500 meter and mass mT = 0.750 kg, find the angular speed of the target just after the collision
Four small charged bodies of equal charges Q=-1nC are placed at four vertices of a rectangle with sides a=4cm and b=2cm. Determine the direction and magnitude of the electric force
A sledge loaded with bricks has a total mass of 17.3 kg and is pulled at constant speed by a rope inclined at 19.4° above the horizontal. What is the mechanical energy lost due to friction
An empty rubber balloon has a mass of 10-g. The balloon is filled with helium at a density of 181-kg/m^3. what is the tension in the line
Calculate the ratio of the drag force on a jet flying at 1140 km/h at an altitude of 10 km to the drag force on a prop-driven transport flying at half that speed and altitude.
After a golf ball is hit it takes off with an initial speed of 20.9 m/s and at an angle of 32.5° with respect to the horizontal. How far would the ball fly if the initial speed was doubled
find the potential difference VB - VA, using the blue path.
You are driving along a highway at 25 m/s when you hear the siren of an emergency vehicle traveling in the opposite direction on the other side of the highway. What is the speed of the vehicle
A 20kg box is on a level surface pressed against a spring compressed 25cm and with k=1000 k/m. How far does the box go up the hill
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